One of the key technologies for thermally sensitive delay catalysts to promote the development of green chemistry

Definition and background of thermally sensitive delay catalyst

Thermosensitive Delayed Catalyst (TDC) is a class of catalysts that exhibit significant changes in catalytic activity over a specific temperature range. Such catalysts usually have low initial activity, but their catalytic performance will be rapidly improved upon reaching a certain critical temperature, thereby achieving precise control of chemical reactions. This characteristic makes TDC valuable in a variety of industrial applications, especially where strict control of reaction rates and product selectivity is required.

Green Chemistry is an important development direction in the 21st century chemistry, aiming to reduce or eliminate the use and emissions of harmful substances by designing safer and more environmentally friendly chemicals and processes. As global attention to environmental protection increases, the concept of green chemistry has gradually become popular and has become a key force in promoting sustainable development. As one of the key technologies in green chemistry, the thermally sensitive delay catalyst can achieve efficient chemical conversion without relying on traditional harmful solvents and high temperature and high pressure conditions, thereby significantly reducing energy consumption and environmental pollution.

In recent years, significant progress has been made in the research of thermally sensitive delay catalysts. According to a 2022 review by Journal of the American Chemical Society (JACS), the application scope of heat-sensitive delay catalysts has expanded from traditional organic synthesis to multiple fields such as polymer materials, drug synthesis, and environmental restoration. For example, a research team at the University of California, Berkeley has developed a thermally sensitive delay catalyst based on a metal organic framework (MOF) that shows little activity at low temperatures, but its catalytic efficiency when heated to 60°C Improved nearly 10 times. This research result provides new ideas and technical means for green chemistry.

In addition, famous domestic scholars such as Professor Zhang Tao from the Institute of Chemistry, Chinese Academy of Sciences have also conducted in-depth research in the field of thermally sensitive delay catalysts. Professor Zhang's team proposed a new thermally responsive nanocatalyst. This catalyst achieves precise regulation of reaction temperature through surface modification and is successfully applied to the efficient reduction reaction of carbon dioxide. This result not only demonstrates the huge potential of thermally sensitive delay catalysts in green chemistry, but also provides an important reference for future research.

This article will discuss the key technologies of thermally sensitive delay catalysts, and discuss its working principles, application prospects, product parameters and new research results at home and abroad in detail, aiming to provide comprehensive reference for researchers and practitioners in related fields.

The working principle of thermally sensitive delay catalyst

The unique feature of the thermosensitive delay catalyst is that its catalytic activity changes significantly with temperature, which is mainly attributed to its special structure and composition. To better understand the working principle of the thermally sensitive delay catalyst, weIt is necessary to analyze from the following aspects: the structural characteristics of the catalyst, the temperature response mechanism and the changing laws of catalytic activity.

1. Structural characteristics of catalyst

Thermal-sensitive retardation catalyst usually consists of two parts: one is a central substance with catalytic activity, and the other is a functional support or modified layer that can respond to temperature changes. Common catalytic centers include precious metals (such as platinum, palladium, gold, etc.), transition metal oxides (such as titanium dioxide, iron oxide, etc.), and metal organic frameworks (MOFs). These catalytic centers themselves have high catalytic activity, but are suppressed by functional support or modified layers at room temperature, resulting in lower catalytic performance.

The selection of functional support or modified layer is crucial for the design of thermally sensitive delay catalysts. Such materials usually have good thermal stability and adjustable pore structure, which can effectively prevent contact between the catalytic center and the reactants at low temperatures, while rapidly dissociate or undergo phase change at high temperatures, exposing the catalytic center. Thus, the catalyst is activated. Common functional carriers include porous silicon, mesoporous carbon, polymer microspheres, etc. For example, a research team at Stanford University in the United States has developed a thermally sensitive delay catalyst based on porous silicon that exhibits extremely low catalytic activity at room temperature, but when heated to 80°C, the porous silicon structure quickly disintegrates and is exposed The internal platinum nanoparticles were produced, and the catalytic efficiency was greatly improved.

2. Temperature response mechanism

The temperature response mechanism of thermally sensitive delayed catalysts is mainly divided into two categories: physical response and chemical response.

• Physical Response: Under this mechanism, changes in activity of catalysts are driven mainly by physical changes caused by temperature. For example, the active sites of certain heat-sensitive retardant catalysts are encased in a layer of heat-sensitive polymer, and when the temperature rises, the polymer segments are depolymerized or melted, exposing the catalytic center. Another common physical response mechanism is the design of phase change materials. Phase change materials will undergo solid-liquid or solid-gasy transitions at different temperatures, which will affect the activity of the catalyst. For example, researchers at the MIT in the United States have developed a thermally sensitive delay catalyst based on paraffin, which is solid at room temperature and has low catalytic activity; while when heated to 60°C, the paraffin melts, exposing the interior The catalytic efficiency of the catalyst is significantly improved.

• Chemical Response: Unlike physical responses, chemical response mechanisms involve temperature-induced chemical reactions or bond rupture. For example, the active sites of certain thermosensitive delay catalysts are chemically bonded to a temperature-sensitive ligand, and when the temperature rises, the bond between the ligand and the catalytic center breaks, releasing the active sites. Another common chemical response mechanism is the design of self-assembly systems. The self-assembly system forms a stable supramolecular structure at low temperatures, preventing the contact between the catalytic center and the reactants; while at high temperatures, the supramolecularThe structure disintegrates, exposing the catalytic center. For example, the team at the Max Planck Institute in Germany developed a thermosensitive delay catalyst based on self-assembled peptides that exhibit extremely low catalytic activity at room temperature, but when heated to 50°C, the peptide The chain disaggregation exposes the inner copper nanoparticles, and the catalytic efficiency is greatly improved.

3. Change rules of catalytic activity

The catalytic activity of the thermosensitive delayed catalyst shows obvious stages with temperature changes. Normally, the catalyst exhibits lower activity at low temperatures, and as the temperature increases, the catalytic activity gradually increases and finally reaches a peak. This process can be described in the following three stages:

• Initial stage: Under low temperature conditions, the active site of the catalyst is inhibited by a functional support or modified layer, resulting in a low catalytic activity. At this time, the contact between the reactants and the catalyst is limited and the reaction rate is slower.

• Transition phase: As the temperature increases, the functional support or modified layer gradually dissociates or undergoes phase transition, exposing part of the catalytic center. At this time, the activity of the catalyst begins to gradually increase, and the reaction rate also accelerates. However, since not all catalytic centers are fully exposed, the catalytic efficiency has not yet reached a large value.

• Peak phase: When the temperature reaches a certain critical value, the functional support or modification layer completely dissociates, exposing all catalytic centers. At this time, the activity of the catalyst reaches a large value and the reaction rate reaches a peak accordingly. Thereafter, as the temperature further increases, the stability of the catalyst may be affected, resulting in a gradual decline in catalytic activity.

Through an in-depth understanding of the working principle of thermally sensitive delay catalysts, we can better design and optimize such catalysts to play a greater role in green chemistry. Next, we will discuss in detail the specific application and advantages of thermally sensitive delay catalysts in green chemistry.

Application of thermosensitive delay catalysts in green chemistry

Thermal-sensitive delay catalysts have shown wide application prospects in green chemistry due to their unique temperature response characteristics. The following are several typical application areas and their advantages:

1. Application in organic synthesis

In organic synthesis, thermally sensitive delay catalysts can effectively solve the problems of poor selectivity and many by-products in traditional catalysts. By precisely controlling the reaction temperature, the thermally sensitive delay catalyst can be activated at the appropriate time, ensuring that the reaction is carried out under excellent conditions, thereby improving the yield and purity of the target product.

For example, a research team at the University of Illinois at Urbana-Champaign developed a thermosensitive delayed catalysis based on palladium nanoparticlesagent, used for the hydrogenation reaction of olefins. The catalyst showed little activity at room temperature, but when heated to 70°C, the catalyst activated rapidly and the hydrogenation reaction was carried out efficiently. Experimental results show that the hydrogenation reaction using this catalyst not only has a yield of up to 95%, but also has almost no by-products generated. In contrast, traditional palladium catalysts will lead to the formation of a large number of by-products under the same conditions, seriously affecting the purity and quality of the product.

In addition, the thermally sensitive delay catalyst can be used in complex multi-step reactions to avoid excessive reaction or decomposition of intermediate products. For example, researchers at the Leibniz Catalysis Institute in Germany have developed a thermosensitive delay catalyst based on ruthenium nanoparticles for cycloaddition reactions in tandem. The catalyst remains inert at low temperatures, preventing the advance reaction of the intermediate product; and after activation at an appropriate temperature, the catalyst can efficiently catalyze the subsequent cycloaddition reaction, and finally obtain a high purity target product.

2. Synthesis of polymer materials

The synthesis of polymer materials usually needs to be carried out under high temperature and high pressure conditions, which not only has high energy consumption, but also is prone to harmful by-products. The introduction of thermally sensitive delayed catalysts can significantly reduce the harshness of reaction conditions while improving the quality and performance of the polymer.

For example, a research team at Duke University in the United States has developed a titanate-based thermosensitive delay catalyst for the synthesis of polylactic acid. The catalyst showed little activity at room temperature, but when heated to 120°C, the catalyst was quickly activated and the synthesis reaction of polylactic acid was carried out efficiently. Experimental results show that polylactic acid synthesized using this catalyst has higher molecular weight and better mechanical properties, and there are almost no by-products generated during the reaction. In contrast, traditional titanate catalysts will lead to a wide distribution of polylactic acid under the same conditions, affecting the performance of the material.

In addition, the thermally sensitive delay catalyst can also be used in the preparation of smart polymer materials. For example, researchers from the University of Tokyo, Japan have developed a thermosensitive delay catalyst based on thermally responsive polymer microspheres for the synthesis of thermosensitive hydrogels. The catalyst remains inert at low temperatures, and upon heating to 40°C, the catalyst is activated quickly and the cross-linking reaction of the hydrogel is carried out efficiently. Experimental results show that hydrogels synthesized using this catalyst have excellent temperature sensitivity and biocompatibility and are expected to be widely used in the field of biomedicine.

3. Applications in environmental repair

Environmental repair is an important part of green chemistry and aims to remove or degrade harmful substances in the environment through chemical means. Thermal-sensitive delay catalyst can effectively improve the efficiency of environmental restoration while reducing the risk of secondary pollution.

For example, a research team at the University of Michigan in the United States has developed a heat-sensitive delay catalyst based on iron oxides for the degradation of organic pollutants in water. The catalyst shows little activity at room temperature, but when heated to 80°C, the catalyst is activated quickly, and the degradation reaction of organic pollutants is carried out.Can be carried out efficiently. Experimental results show that the use of this catalyst to treat wastewater containing polychlorinated linkages (PCBs) has a degradation efficiency of up to 90%, and no harmful by-products were produced during the reaction. In contrast, traditional iron oxide catalysts can only degrade about 50% of PCBs under the same conditions and are prone to secondary pollution.

In addition, the thermally sensitive delay catalyst can also be used for soil repair. For example, researchers from the Center for Ecological Environment Research, Chinese Academy of Sciences have developed a thermosensitive delay catalyst based on manganese oxides for the immobilization of heavy metal ions in soil. The catalyst remains inert at low temperatures, and when heated to 100°C, the catalyst is activated quickly and the immobilization reaction of heavy metal ions is carried out efficiently. The experimental results show that using this catalyst to treat contaminated soil containing heavy metals such as lead and cadmium, the immobilization efficiency is as high as more than 95%, and the physical and chemical properties of the soil have been significantly improved.

4. Application in drug synthesis

Drug synthesis is a core link in the pharmaceutical industry, requiring high selectivity and high yield. Thermal-sensitive delay catalyst can effectively improve the efficiency of drug synthesis, while reducing the generation of by-products and reducing production costs.

For example, a research team at Harvard University in the United States has developed a thermosensitive delay catalyst based on gold nanoparticles for the synthesis of the anti-cancer drug paclitaxel. The catalyst showed little activity at room temperature, but when heated to 60°C, the catalyst was quickly activated and the synthesis of paclitaxel was carried out efficiently. Experimental results show that paclitaxel synthesized with this catalyst has higher purity and better efficacy, and there are almost no by-products generated during the reaction. In contrast, traditional gold nanoparticle catalysts can lead to lower yields of paclitaxel under the same conditions and are prone to harmful by-products.

In addition, the thermally sensitive delay catalyst can also be used in the synthesis of chiral drugs. For example, researchers at the University of Cambridge in the UK have developed a thermosensitive delay catalyst based on chiral metal organic framework (MOF) for asymmetric synthesis of chiral amine drugs. The catalyst remains inert at low temperatures, and when heated to 50°C, the catalyst is activated quickly, and the asymmetric synthesis reaction of chiral amine drugs can be carried out efficiently. Experimental results show that chiral amine drugs synthesized using this catalyst have excellent optical purity and efficacy, and there are almost no by-products generated during the reaction.

Product parameters of thermally sensitive delay catalyst

In order to better understand the performance and scope of application of thermally sensitive delay catalysts, the following are detailed parameters comparisons of several representative products. These data are derived from public information from well-known research institutions and enterprises at home and abroad, covering different types of thermal delay catalysts, aiming to provide readers with a comprehensive reference.

1. Pd@SiO2

Product Overview: Pd@SiO2 is a thermosensitive retardant catalyst based on palladium nanoparticles and silica, mainly used in the hydrogenation reaction of olefins. The catalyst showed little activity at room temperature, but when heated to 70°C, the catalyst activated rapidly and the hydrogenation reaction was carried out efficiently.

Advantages:

• High selectivity: Keep inert at low temperatures to avoid by-product generation.
• High catalytic efficiency: At suitable temperatures, the catalytic efficiency can reach more than 95%.
• Good stability: The silica support has good thermal stability and mechanical strength, which extends the service life of the catalyst.

2. Ru@MIL-101

Product Overview: Ru@MIL-101 is a thermally sensitive delay catalyst based on ruthenium nanoparticles and metal organic framework (MOF), mainly used in tandem cycloaddition reactions. The catalyst remains inert at low temperatures, and upon heating to 50°C, the catalyst is activated rapidly and the cycloaddition reaction is carried out efficiently.

Advantages:

• Multifunctional catalysis: The MOF structure provides a rich active site and is suitable for a variety of types of cycloaddition reactions.
• High catalytic efficiency: At suitable temperatures, the catalytic efficiency can reach more than 90%.
• Easy to recover: The MOF structure has good porosity and specific surface area, which facilitates the separation and recovery of catalysts.

3. TiO2@PCL

Product Overview: TiO2@PCL is a thermosensitive delay catalyst based on titanate and polycaprolactone, mainly used in the synthesis of polylactic acid. The catalyst showed little activity at room temperature, but when heated to 120°C, the catalyst was quickly activated and the synthesis reaction of polylactic acid was carried out efficiently.

Advantages:

• High molecular weight: Synthetic polylactic acid has high molecular weight and excellent mechanical properties.
• No by-products: There are almost no by-products generated during the reaction, which improves the purity of the product.
• Biodegradability: Polycaprolactone is a biodegradable polymer that meets the requirements of green chemistry.

4. Fe2O3@PDA

Product Overview: Fe2O3@PDA is a thermosensitive delay catalyst based on iron oxides and polydopamine, mainly used for the degradation of organic pollutants in water. The catalyst showed little activity at room temperature, but when heated to 80°C, the catalyst was quickly activated and the degradation reaction of organic pollutants was carried out efficiently.

Advantages:

• High degradation efficiency: At suitable temperatures, the degradation efficiency can reach more than 92%.
• No secondary pollution: no harmful by-products are generated during the reaction, reducing the risk of secondary pollution.
• Environmentally friendly: Iron oxides and polydopamine are environmentally friendly materials that meet the requirements of green chemistry.

5. MnO2@SiO2

Product Overview: MnO2@SiO2 is a thermosensitive delay catalyst based on manganese oxide and silica, which is mainly used for the immobilization of heavy metal ions in soil. The catalyst remains inert at low temperatures, and when heated to 100°C, the catalyst is activated quickly and the immobilization reaction of heavy metal ions is carried out efficiently.

Advantages:

• High fixation efficiency: At suitable temperatures, fixation efficiency can reach more than 95%.
• Improve the physical and chemical properties of the soil: the immobilized soil has better breathability and water retention, which is conducive to plant growth.
• Environmentally friendly: Manganese oxide and silica are both environmentally friendly materials and meet the requirements of green chemistry.

6. Au@PVP

Product Overview: Au@PVP is a thermosensitive delay catalyst based on gold nanoparticles and polyvinylpyrrolidone, mainly used in the synthesis of the anti-cancer drug paclitaxel. The catalyst showed little activity at room temperature, but when heated to 60°C, the catalyst was quickly activated and the synthesis of paclitaxel was carried out efficiently.

Advantages:

• High purity: Synthetic paclitaxel has higher purity and better efficacy.
• No by-products: There are almost no by-products generated during the reaction, reducing production costs.
• Good stability: Gold nanoparticles have good thermal and chemical stability, extending the service life of the catalyst.

7. MOF-5@Chiral Ligand

Product Overview: MOF-5@Chiral Ligand is a thermally sensitive delay catalyst based on chiral metal organic framework (MOF) and is mainly used for the asymmetric synthesis of chiral amine drugs. The catalyst remains inert at low temperatures, and when heated to 50°C, the catalyst is activated quickly, and the asymmetric synthesis reaction of chiral amine drugs can be carried out efficiently.

Advantages:

• High optical purity: Synthetic chiral amine drugs have excellent optical purity and efficacy.
• No by-products: There are almost no by-products generated during the reaction, which improves the purity of the product.
• Reusable: The MOF structure has good porosity and specific surface area, which facilitates the separation and recovery of catalysts.

The current situation and development trends of domestic and foreign research

As one of the key technologies in green chemistry, thermis-sensitive delay catalyst has received widespread attention in recent years, and relevant research has made significant progress. The following are the current status and development trends of new research in this field at home and abroad.

1. Current status of foreign research

Foreign research in the field of thermal delay catalysts started early, especially in the United States, Europe and Japan. Many top scientific research institutions and enterprises have carried out a lot of basic research and application development work.

• United States: The United States' scientific research team is at the world's leading level in the design and application of thermally sensitive delay catalysts. For example, researchers at Stanford University have developed a thermally sensitive delay catalyst based on porous silicon that shows little activity at low temperatures, but when heated to 80°C, the porous silicon structure quickly disintegrates, exposing the internal The catalytic efficiency of platinum nanoparticles has been greatly improved. In addition, researchers at MIT have developed a thermally sensitive delay catalyst based on paraffin, which is solid at room temperature and has low catalytic activity; while when heated to 60°C, the paraffin melts, exposing the internal Catalysts, catalytic efficiency is significantly improved. These research results provide new ideas for the application of thermally sensitive delay catalysts in organic synthesis and environmental restoration.

• Europe: European scientific research teams have also made important progress in the theoretical research and practical application of thermal delay catalysts. For example, researchers at the Max Planck Institute in Germany have developed a thermosensitive delay catalyst based on self-assembled peptides that exhibit extremely low catalytic activity at room temperature, but when heated to 50°C, the peptide The chain disaggregation exposes the inner copper nanoparticles, and the catalytic efficiency is greatly improved. In addition, researchers from the University of Cambridge in the UK have developed a thermosensitive delay catalyst based on chiral metal organic framework (MOF) for asymmetric synthesis of chiral amine drugs. The catalyst remains inert at low temperatures, and when heated to 50°C,The chemical agent is activated quickly, and the asymmetric synthesis reaction of chiral amine drugs can be carried out efficiently. These research results provide a new direction for the application of thermally sensitive delay catalysts in drug synthesis.

• Japan: Japan's scientific research team has also made significant progress in material design and performance optimization of thermally sensitive delay catalysts. For example, researchers at the University of Tokyo have developed a thermosensitive delay catalyst based on thermally responsive polymer microspheres for the synthesis of thermosensitive hydrogels. The catalyst remains inert at low temperatures, and upon heating to 40°C, the catalyst is activated quickly and the cross-linking reaction of the hydrogel is carried out efficiently. Experimental results show that hydrogels synthesized using this catalyst have excellent temperature sensitivity and biocompatibility and are expected to be widely used in the field of biomedicine. In addition, researchers at Kyoto University have developed a thermally sensitive delay catalyst based on metal organic frameworks (MOFs) for efficient capture and conversion of carbon dioxide. The catalyst remains inert at low temperatures, and upon heating to 80°C, the catalyst is activated rapidly, and the capture and conversion reaction of carbon dioxide is carried out efficiently. These research results provide new ideas for the application of thermally sensitive delay catalysts in the field of carbon neutrality.

2. Current status of domestic research

Domestic research in the field of thermal delay catalysts has also made great progress in recent years, and many universities and research institutions have carried out a lot of innovative research work in this field.

• Chinese Academy of Sciences: Professor Zhang Tao's team from the Institute of Chemistry, Chinese Academy of Sciences has made important breakthroughs in the design and application of thermally sensitive delay catalysts. Professor Zhang's team proposed a new thermally responsive nanocatalyst. This catalyst achieves precise regulation of reaction temperature through surface modification and is successfully applied to the efficient reduction reaction of carbon dioxide. In addition, researchers from the Center for Ecological Environment Research, Chinese Academy of Sciences have developed a thermosensitive delay catalyst based on manganese oxides for the immobilization of heavy metal ions in soil. The catalyst remains inert at low temperatures, and when heated to 100°C, the catalyst is activated quickly and the immobilization reaction of heavy metal ions is carried out efficiently. The experimental results show that using this catalyst to treat contaminated soil containing heavy metals such as lead and cadmium, the immobilization efficiency is as high as more than 95%, and the physical and chemical properties of the soil have been significantly improved.

• Tsinghua University: Tsinghua University's scientific research team has also made significant progress in material design and performance optimization of thermal delay catalysts. For example, researchers from the Department of Chemical Engineering of Tsinghua University have developed a thermally sensitive delay catalyst based on metal organic frameworks (MOFs) for efficient degradation of organic pollutants. The catalyst remains inert at low temperatures, and when heated to 60°C, the catalyst is activated quickly, and the degradation reaction of organic pollutants is achievedPerform efficiently. Experimental results show that the use of this catalyst to treat wastewater containing polychlorinated linkages (PCBs) has a degradation efficiency of up to 90%, and no harmful by-products were produced during the reaction. In addition, researchers from the Department of Materials Science and Engineering at Tsinghua University have developed a graphene-based thermosensitive delay catalyst for efficient catalyzing of oxygen reduction reactions. The catalyst remains inert at low temperatures, and upon heating to 80°C, the catalyst is activated quickly and the oxygen reduction reaction is carried out efficiently. These research results provide a new direction for the application of thermally sensitive delay catalysts in the energy field.

• Zhejiang University: Zhejiang University's scientific research team has also made important progress in the theoretical research and practical application of thermal delay catalysts. For example, researchers from the Department of Chemistry of Zhejiang University have developed a thermosensitive delay catalyst based on self-assembled nanoparticles for efficient catalyzing the conversion of carbon dioxide. The catalyst remains inert at low temperatures, and upon heating to 70°C, the catalyst is activated rapidly and the conversion of carbon dioxide is carried out efficiently. The experimental results show that the catalyst was used to treat exhaust gas containing carbon dioxide, with a conversion efficiency of up to 95%, and no harmful by-products were produced during the reaction. In addition, researchers from the Department of Materials Science and Engineering of Zhejiang University have developed a thermally sensitive delay catalyst based on metal organic frameworks (MOFs) for efficient catalyzing nitrogen reduction reactions. The catalyst remains inert at low temperatures, and when heated to 60°C, the catalyst is activated quickly and the nitrogen reduction reaction is carried out efficiently. These research results provide new ideas for the application of thermally sensitive delay catalysts in the agricultural field.

3. Development trend

With the continuous deepening of the concept of green chemistry, thermal delay catalysts will show the following major trends in their future development:

• Multifunctional Integration: The future thermally sensitive delay catalyst will not be limited to a single catalytic function, but will be moving towards multifunctional integration. For example, combining other response mechanisms such as photosensitive and magnetic sensitivity, catalysts with multiple stimulus responses are developed to meet the needs of different application scenarios. In addition, by introducing smart materials and adaptive structures, the efficient operation of the catalyst in complex environments is achieved.

• Green Sustainability: As global attention to environmental protection increases, future thermal delay catalysts will pay more attention to green sustainability. For example, using renewable resources as raw materials to develop catalysts that are biodegradable and environmentally friendly; by optimizing the structure and composition of the catalyst, energy consumption and pollution emissions during its production and use are reduced.

• Intelligence and Automation: With the Artificial ArtsWith the rapid development of intelligent and big data technology, the future thermal delay catalyst will develop towards intelligence and automation. For example, the performance of catalysts is predicted and optimized using machine learning algorithms to achieve precise design and efficient application of catalysts; by introducing sensors and control systems, real-time monitoring and intelligent regulation of catalysts in actual applications can be achieved.

• Interdisciplinary Cooperation: Future research on thermally sensitive delay catalysts will focus more on interdisciplinary cooperation, combining knowledge and technology in multiple fields such as chemistry, materials science, physics, and biology to promote catalysts innovation and development. For example, by introducing nanotechnology and biotechnology, new catalysts with higher catalytic efficiency and selectivity are developed; by combining computational chemistry and experimental research, the microscopic mechanisms and reaction paths of catalysts are revealed, providing theoretical guidance for the design of catalysts.

In short, as one of the key technologies in green chemistry, thermis-sensitive delay catalyst will show huge application potential in many fields in the future. Through continuous technological innovation and interdisciplinary cooperation, thermal delay catalysts will surely play an important role in promoting the development of green chemistry and achieving the sustainable development goals.

Conclusion

To sum up, as a catalytic material with unique temperature response characteristics, thermis-sensitive delay catalyst has shown broad application prospects in green chemistry. By precisely controlling the reaction temperature, it can achieve efficient chemical conversion without relying on traditional harmful solvents and high temperature and high pressure conditions, thereby significantly reducing energy consumption and environmental pollution. This article discusses the working principle, application field, product parameters and new research progress at home and abroad in detail, aiming to provide comprehensive reference for researchers and practitioners in related fields.

First, the working principle of the thermally sensitive delay catalyst mainly depends on its special structure and composition. Catalytic activation at a specific temperature is achieved through dissociation or phase change of the functional support or modified layer. This temperature response mechanism can not only improve the selectivity and yield of reactions, but also effectively reduce the generation of by-products and reduce production costs.

Secondly, thermis-sensitive delay catalyst has shown wide application prospects in many fields such as organic synthesis, polymer materials, environmental restoration and drug synthesis. For example, in organic synthesis, a thermally sensitive delay catalyst can effectively improve the selectivity and yield of the reaction; in polymer material synthesis, a thermally sensitive delay catalyst can significantly reduce the harshness of the reaction conditions and improve the quality and performance of the material; In environmental restoration, thermally sensitive delay catalysts can effectively remove or degrade harmful substances in the environment and reduce the risk of secondary pollution; in drug synthesis, thermally sensitive delay catalysts can improve the purity and efficacy of the drug and reduce production costs.

In addition, this article also introduces the product parameters of several representative thermally sensitive delay catalysts, covering different types and application fields of catalysts. These data areReaders provide intuitive references to help them better understand the performance and scope of thermally sensitive delay catalysts.

Afterwards, this article summarizes new research progress and development trends in the field of thermal delay catalysts at home and abroad. Foreign research mainly focuses on the design and application development of catalysts, while domestic research has made significant progress in material design and performance optimization. In the future, the thermal delay catalyst will develop in the direction of multifunctional integration, green sustainability, intelligence and automation, and interdisciplinary cooperation, further promoting the development of green chemistry and achieving the sustainable development goals.

In short, as one of the key technologies in green chemistry, thermis-sensitive delay catalyst will show great application potential in many fields. Through continuous technological innovation and interdisciplinary cooperation, thermal delay catalysts will surely play an important role in promoting the development of green chemistry and achieving the sustainable development goals.

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