The effect of additives on Cu/HZSM-5 catalyst for DME synthesis

被引：13

作者：

Jia, ML ^{[1
]}

Li, WZ ^{[1
]}

Xu, HY ^{[1
]}

Hou, SF ^{[1
]}

Yu, CY ^{[1
]}

Ge, QJ ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

来源：

CATALYSIS LETTERS | 2002年 / 84卷 / 1-2期

关键词：

Cuo : HZSM-5; Cu-ZnO-ZrO2 : HZSM-5; syngas; dimethyl ether synthesis; methanol synthesis;

D O I：

10.1023/A:1021064231695

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 addition of ZnO or ZrO2 into CuO/HZSM-5 was investigated for DME synthesis from syngas by using the reactive frontal chromatography method, TPR and in situ TPR. These promoters enhanced the catalytic activity of Cu/HZSM-5 and promotion with ZnO and ZrO2 produced a maximum activity, which could be explained by the improvement of the dispersion of Cu and the promotion of CuO reduction. The Cu+ species existing during the reaction have been detected, based on which a Cu-0 <-> Cu+1 redox cycle model was put forward.

引用

页码：31 / 35

页数：5

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