A study on acid sites related to activity of nanoscale ZSM-5 in toluene disproportionation

被引：29

作者：

Wang, Kunyuan

Wang, Xiangsheng ^{[1
]}

Li, Gang

机构：

[1] Dalian Univ Technol, Dept Catalyt Chem & Engn, Dalian 116012, Peoples R China

[2] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2007年 / 8卷 / 03期

关键词：

acid site; acid strength; activity; toluene disproportionation; NH3-TPD;

D O I：

10.1016/j.catcom.2006.06.024

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：

The acid amount and acid strength of nanoscale HZSM-5 and modified HZSM-5 were studied. It has been shown that only acid sites with acid strength H-0 <= +2.27 are related to the catalytic activity in toluene disproportionation. The acid sites with acid strength H-0 <= -3.0 are easily passivated and the acid site with acid strength -3.0 < H-0 <= +2.27 are the body of valid acid site in modified HZSM-5. The concentration of acid site did not linearly relate to the reactivity in toluene disproportionation. (c) 2006 Elsevier B.V. All rights reserved.

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页码：324 / 328

页数：5

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