YANG Zhiping, YUAN Haowen, ZHU Shenmin, LI Yao, ZHANG Di

(School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)

Abstract: Zeolites are widely used in catalysis, adsorption and separation, due to their regular pore structure and rich active sites. However, the internal active sites of conventional bulk zeolites are hardly accessible, which lower the actual utilization rate of zeolites. Therefore, designing new structures thus improving the efficiency of zeolites has attracted intense attention in recent years. This article reviews the progress on zeolites with newly proposed structures and enhance efficiency, including extra-large pore zeolites, nanocrystalline zeolites, layered zeolites and meso-microporous hierarchical zeolites. By designing new structures, the performance of zeolites in conventional catalysis, adsorption, and separation can be improved. Meanwhile, new insights for expanding the application of zeolites in heavy oil catalysis and supported single-atom catalysis are discussed.

Key words: zeolite; extra-large pore; nanocrystalline; layered; hierarchical pore