分子筛限域金属纳米粒子及其氧化还原反应应用的研究进展

沸石分子筛是一类孔隙均匀、结晶度高、结构多样、比表面积大的材料,在催化、分离、吸附等方面得到了广泛的应用。沸石分子筛已被证明是金属纳米粒子(MNPs)的理想载体。金属纳米粒子@沸石分子筛催化剂不仅表现出优异的催化活性,而且具有较高的稳定性和择形催化性。此外,限域的金属纳米粒子与具有活性位点的纳米孔骨架的协同作用可以进一步提高复合催化剂的催化活性。金属纳米粒子@沸石分子筛催化剂由于具有较高的活性、择形性和热稳定性等优点,在工业相关应用中引起了人们的极大关注。本文综述了金属纳米粒子@沸石分子筛催化剂的研究进展,重点介绍了多种合成方法以及其在氢化和氧化反应中的应用进展。指出了金属纳米粒子@沸石分子筛催化剂领域存在的问题和挑战并对其未来发展进行展望。

Progress on Synthesis of Zeolite Confining Metal Nanoparticles and Their Applications in Oxidation and Hydrogenation Reaction

Zeolite is a kind of materials with uniform pores, high crystallinity, diverse structures and large specific surface area. It has been widely used in catalysis, separation and adsorption. Zeolites have been proved to be ideal supports for encapsulating metal nanoparticles (MNPs) in their nanoporous space. MNPs@zeolite catalysts not only show excellent catalytic activity, but also have high stability and catalytic shape selectivity. In addition, the synergistic effect of confined MNPs and nanoporous framework with active sites can further improve the catalytic activity of the composite catalysts. MNPs@zeolite catalysts exhibit excellent properties such as high activity, shape-selectivity and thermal stability, which have attracted great attention in relevant industrial applications. This paper reviews the research progress of MNPs@zeolite catalysts, with emphasis on various synthetic methods and heterogeneous catalytic reactions such as hydrogenation and oxidation. Furthermore, this review also points out some problems and challenges in the field of MNPs@zeolite catalysts, and looks forward to their future development.