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

被引：11

作者：

Shandong Yuan

Jian Li

Zhixian Hao

Zhaochi Feng

Qin Xin

Pinliang Ying

Can Li

机构：

[1] Dalian Institute of Chemical Physics,State Key Laboratory of Catalysis

[2] Chinese Academy of Sciences,undefined

[3] PO,undefined

来源：

Catalysis Letters | 1999年 / 63卷

关键词：

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

D O I：

暂无

中图分类号：

学科分类号：

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 O2 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.

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页码：73 / 77

页数：4

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