γ-(2,3-Epoxypropoxy) trimethoxysilane is a crucial silicone product synthesized by hydrosilylation. Its derived downstream silicone products have galvanized the development of silicone industry. However, the Speier’s or Karstedt’s catalysts commonly utilized in its industrial process are homogeneous, leading to complications, such as low catalytic selectivity and recycling difficulty. Herein, a new heterogeneous platinum catalyst was developed by using a titanium-based metal organic framework (MIL-125) composite with polylactic acid (PAA) as the support. The as-synthesized Pt/PAA-2@MIL-125 catalyst exhibited impressive catalytic performance, producing a 97% yield in β-product, and maintained recyclability for the synthesis of γ-(2,3-epoxypropoxy) trimethoxysilane. Further characterization analyses revealed that the introduction of PAA resulted in the formation of a defective mesoporous MIL-125, which accelerated the transmission efficiency of reactants. Moreover, the abundant carboxylic acid groups in the MIL-125/PAA composite could interact strongly with Pt active species, thereby enhancing the catalytic performance and minimizing the loss of Pt, ultimately improving its cycling performance. The comprehensive experiments demonstrated the potential of this catalyst as an effective and versatile heterogeneous catalyst not only for the hydrosilylation of various olefins, but also for the hydrosilyation of silanes.

γ- (2,3-环氧丙氧基)三甲氧基硅烷是通过氢化硅烷化合成的重要有机硅产品。其衍生的下游有机硅产品带动了有机硅行业的发展。然而，其工业过程中常用的Speier催化剂或Karstedt催化剂是均相的，导致催化选择性低和回收困难等复杂情况。在此，通过使用钛基金属有机骨架（MIL-125）复合材料与聚乳酸（PAA）作为载体，开发了一种新型非均相铂催化剂。合成的 Pt/PAA-2@MIL-125 催化剂表现出令人印象深刻的催化性能， β-产物产率为 97%，并保持了γ- (2,3-环氧丙氧基)三甲氧基硅烷合成的可回收性。进一步的表征分析表明，PAA的引入导致了有缺陷的介孔MIL-125的形成，从而加速了反应物的传输效率。此外，MIL-125/PAA复合材料中丰富的羧酸基团可以与Pt活性物质发生强烈相互作用，从而增强催化性能并最大限度地减少Pt的损失，最终提高其循环性能。综合实验证明了该催化剂作为有效且通用的多相催化剂的潜力，不仅适用于各种烯烃的氢化硅烷化，而且适用于硅烷的氢化硅烷化。