The effect of oxygen on the aromatization of methane over the Mo/HZSM-5 catalyst

被引：58

作者：

Yuan, SD ^{[1
]}

Li, J ^{[1
]}

Hao, ZX ^{[1
]}

Feng, ZC ^{[1
]}

Xin, Q ^{[1
]}

Ying, PL ^{[1
]}

Li, C ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key lab Catalysis, Dalian 116023, Peoples R China

来源：

CATALYSIS LETTERS | 1999年 / 63卷 / 1-2期

关键词：

methane; oxygen; aromatization; Mo/HZSM-5; coke formation; UV-Raman spectroscopy;

D O I：

10.1023/A:1019096300302

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 aromatization of methane over a Mo/HZSM-5 catalyst was carried out in the presence of oxygen. It is shown that the addition of a small amount of oxygen is beneficial to improve the durability of the catalyst. UV-Raman spectra disclose that the carbonaceous deposits formed on the HZSM-5 are mainly polyolefinic and aromatic, while that on the Mo/HZSM-5 is mainly polyaromatic. The small amount of O-2 added may partly remove the coke deposits on the active sites and keep the catalyst as MoOxCy/HZSM-5, thus resulting in an improvement of the catalytic performance of the Mo/HZSM-5 catalyst.

引用

页码：73 / 77

页数：5

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