A new way to enhance the coke-resistance of Mo/HZSM-5 catalyst for methane dehydroaromatization

被引：46

作者：

Dong, Xinfa ^{[1
]}

Song, Yingbing

Lin, Weiming

机构：

[1] S China Univ Technol, Sch Chem & Energy Engn, Guangzhou 510640, Guangdong, Peoples R China

[2] Shantou Univ, Dept Chem, Shantou 515063, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2007年 / 8卷 / 03期

基金：

中国国家自然科学基金;

关键词：

methane dehydroaromatization; HZSM-5; zeolite; Mo/HZSM-5; catalyst; thermal dealumination;

D O I：

10.1016/j.catcom.2006.02.014

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：

A thermal dealumination method was applied to modify HZSM-5 zeolites, and the Mo/HZSM-5 catalyst pre-dealuminated in N-2 stream exhibited rather high catalytic activity and stability in the methane dehydroaromatization reaction (MDA). Si-29 NMR, FT-IR and TPO measurements show that the thermal treatment of the HZSM-5 in inert atmosphere induced partial removal of tetrahedral coordinated Al from the zeolite lattices leading to elimination of the original excess strong Bronsted acid sites (known as responsible for the coke formation), and thus significantly promoted the coke-resistance of the Mo/HZSM-5 catalyst. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：539 / 542

页数：4

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