超细SiO_2负载型两亲性铑膦络合物催化性能研究  

Catalytic Properties of Ultrafine SiO_2 Supported Amphiphilic Phosphine-Rh Complex Catalysts

作　　者：彭庆蓉[1] 侯士聪[1] 张春荣[1] 戴茂华[2] 袁友珠[2] 

机构地区：[1]中国农业大学,北京100083 [2]厦门大学固体表面物理化学国家重点实验室,福建厦门361005

出　　处：《石油化工高等学校学报》2010年第1期19-22,共4页Journal of Petrochemical Universities

基　　金：国家自然科学基金(20023001)

摘　　要：针对均相催化反应后催化剂与产物分离困难和高碳烯烃在水-有机两相中反应速率较低的问题,采用水-有机两亲膦铑络合物负载到超细SiO2载体上催化1-己烯氢甲酰化反应,并与超细SiO2制备负载水相催化剂比较,超细SiO2负载型两亲铑膦络合物催化剂表现出较高的1-己烯氢甲酰化反应活性和选择性,且含水质量分数范围较宽,反应后产物与催化剂容易分离。两亲膦铑络合物超细SiO2负载液相催化剂可避免超细SiO2负载水相催化剂循环使用时水分被提取到有机相的缺点,同时获得较高的氢甲酰化反应活性和选择性。Because of the lower activity of higher olefins in aqueous/organic biphasic catalysis system and the catalyst separation of homogeneous catalysts,ultrafine SiO2 nanoparticles were used as supports to immobilize amphiphilic phosphine-complex to obtain supported catalysts for hydroformylation of 1-hexene. Compared to the supported aqueous-phase catalysts （SAPC） on ultrafine SiO2 support,the ultrafine SiO2-supported catalyst with amphiphilic phosphine-complex presented a higher hydroformylation performance over a relatively wider range of support hydration. Since the water was distilled to organic phase for more times recycled catalysts,the drawbacks of ultrafine SiO2 supported water-soluble phosphine-Rh complexes catalyst could be avoided by using supported liquid-phase catalyst prepared by using amphiphilic phosphine-Rh complexes,obtaining higher activity and selectivity of hydroformylation.

关 键 词：超细SiO2 负载型两亲铑膦配合物 氢甲酰化 1-己烯 

分 类 号：O643.32[理学—物理化学]