Recyclable TPA-Modified MIL-88-Supported Ionic Pt as a Highly Efficient Catalyst for Alkene Hydrosilylation
Muhua Chen1, Peng Chen1, Zhen Ji1
1Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
ACS Omega
|April 17, 2023
Summary
A novel heterogeneous catalyst, 1.2%Pt/TPA-MIL-88, offers high activity and stability for hydrosilylation reactions, overcoming limitations of traditional homogeneous catalysts in silicone synthesis.
Area of Science:
- Materials Science
- Catalysis
- Organic Chemistry
Background:
- Homogeneous catalysts are widely used for industrial hydrosilylation reactions in silicone synthesis.
- These homogeneous catalysts suffer from poor recyclability, side reactions, and high costs.
- Developing efficient and reusable heterogeneous catalysts is crucial for sustainable silicone production.
Purpose of the Study:
- To develop a highly efficient and recyclable heterogeneous catalyst for hydrosilylation.
- To address the limitations of homogeneous catalysts in functionalized silicone compound synthesis.
- To investigate the catalytic performance and stability of a novel Pt-based heterogeneous catalyst.
Main Methods:
- Synthesis of MIL-88 modified with trimethoxy[3-(phenylamino)propyl]silane (TPA-MIL-88).
- Loading of Platinum (Pt) ions onto the modified MIL-88 support.
- Evaluation of the catalytic activity and stability of the 1.2%Pt/TPA-MIL-88 catalyst in hydrosilylation reactions.
- Testing the catalyst's reusability and performance with various olefins.
Main Results:
- The synthesized 1.2%Pt/TPA-MIL-88 catalyst demonstrated high catalytic activity and excellent stability in hydrosilylation.
- The catalyst's performance was attributed to the pyrrolic nitrogen structure facilitating interaction between TPA-MIL-88 and Pt ions.
- The 1.2%Pt/TPA-MIL-88 catalyst could be reused five times without significant loss of activity.
- Satisfactory results were obtained when the catalyst was applied to other olefin hydrosilylation reactions.
Conclusions:
- A highly efficient heterogeneous catalyst (1.2%Pt/TPA-MIL-88) was successfully prepared for hydrosilylation.
- This novel catalyst overcomes the drawbacks of traditional homogeneous catalysts, offering recyclability and stability.
- The catalyst shows significant potential for industrial applications in the silicone industry due to its broad applicability.
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