Design of micro-mesoporous zeolite catalysts for alkylation

作者：Fu, Xiaoqin; Sheng, Xiaoli; Zhou, Yuming^*; Fu, Zhiwei; Zhao, Shuo; Bu, Xiaohai; Zhang, Chao

来源：RSC Advances, 2016, 6(56): 50630-50639.

DOI：10.1039/c6ra08099e

• TEMPLATED SYNTHESIS
• BETA-ZEOLITE
• O-XYLENE
• ZSM-5
• PERFORMANCE
• STRATEGIES
• MORDENITE
• ALUMINUM
• CARBON
• AL-27

Hierarchical zeolite Y was hydrothermally synthesized using ionic liquid 1-methyl-3-[3'-(trimethoxysilyl)propyl]imidazolium chloride, which was added into the conventional synthesis composition for crystalline microporous aluminosilicate as a mesopore-directing agent. An extremely short diffusion path length and abundant exposed acid sites in the hierarchical zeolite Y made it suitable for the catalytic transformation of bulky molecules. Then the catalytic performance of hierarchical zeolites Y was investigated using the alkylation of o-xylene with styrene. The ionic liquid directed hierarchical zeolite Y exhibited a remarkably high catalytic activity and long catalytic lifetime for the production of 1-phenyl-1-xylylethane via alkylation reaction, as compared with that of solely microporous zeolite Y. The distinct catalytic performances of the novel hierarchical zeolite Y could be attributed to the enhancement of medium strong acid amount and its micro-mesoporous structural properties which are favorable for the fast diffusion of products.

• 出版日期2016
• 单位环境保护部核与辐射安全中心; 东南大学