摘要
有序介孔氧化硅材料具有独特的结构和性质,如高的比表面积、大的孔容、均一的孔径分布、丰富的结构和形貌等,在多相催化领域受到广泛的关注和研究。本文回顾了近年来介孔氧化硅在负载贵金属催化剂方面的研究现状,介绍了直接浸渍法、官能团修饰法、原子层沉积法、一锅合成法等不同的负载方法,归纳比较了各种方法之间的优缺点。同时也指出了介孔有序SiO2材料在催化负载方面存在的一些局限,并对其发展前景做了展望,认为降低介孔氧化硅的成本、提高载体的水热稳定性、开发新结构和性能的介孔氧化硅以及探索新的催化剂负载工艺,将是未来介孔氧化硅在多相催化领域应用研究的重要方向。
Ordered mesoporous silica materials have been widely studied in the field of heterogeneous catalysis for their unique structures and properties,such as high surface area,large pore volume, uniform pore size distribution,diverse structure and morphology. The research progress of mesoporous silica in loading noble metals as heterogeneous catalyst is reviewed. Different loading methods are introduced,including direct-impregnation method,functional group modified method,atoms layer deposition method,and one-pot synthesis method. The advantages and disadvantages of such methods are compared. The limitations for mesoporous silica as support are presented and the development prospects are also given. Future development of mesoporous silica as catalyst support shall be focused on reducing the cost of mesoporous silica,improving the hydrothermal stability of the support, developing new structures and properties of mesoporous silica as well as exploring new catalyst loading process.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2014年第6期1459-1464,共6页
Chemical Industry and Engineering Progress
