Synthesis of triethoxysilane imidazolium based ionic liquids and their application in the preparation of mesoporous ZSM-5

被引：34

作者：

Kore, Rajkumar ^{[1
]}

Srivastava, Rajendra ^{[1
]}

机构：

[1] Indian Inst Technol, Rupnagar 140001, Punjab, India

来源：

CATALYSIS COMMUNICATIONS | 2012年 / 18卷

关键词：

Ionic liquids; ZSM-5; Structure directing agents; Alkylation; Cracking; CRYSTALLINE ZEOLITE;

D O I：

10.1016/j.catcom.2011.11.012

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Triethoxysilane containing imidazole based ionic liquids were synthesized. These ionic liquids were utilized as a structure directing agent for the synthesis of mesoporous ZSM-5. ZSM-5 was characterized by a complementary combination of X-ray diffraction, N-2 adsorption/desorption, Scanning electron microscopy. Transmission electron microscopy. Temperature programmed desorption techniques. Infrared spectroscopy and Nuclear Magnetic Resonance spectroscopy. The resultant zeolites were mesoporous and showed unique characteristics of a fully crystalline microporous MFI zeolite framework. Mesoporous ZSM-5 synthesized from imidazole based ionic liquids exhibited higher catalytic activity than conventional ZSM-5 in alkylation and cracking reactions. Significantly high catalytic activity of the mesoporous ZSM-5 suggests that large external surface area and accessible acid sites are beneficial for catalytic reactions involving large organic molecules. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：11 / 15

页数：5

共 22 条

[21] Catalytic properties of hierarchical mesoporous zeolites templated with a mixture of small organic ammonium salts and mesoscale cationic polymers [J].