Single-step synthesis of DME from syngas on CuZnAl-zeolite bifunctional catalysts: the influence of zeolite type

被引：24

作者：

Xie, Qinglong ^{[1
,2
]}

Chen, Paul ^{[1
,2
]}

Peng, Pu ^{[1
,2
]}

Liu, Shiyu ^{[1
,2
]}

Peng, Peng ^{[1
,2
]}

Zhang, Bo ^{[1
,2
]}

Cheng, Yanling ^{[1
,2
,3
]}

Wan, Yiqin ^{[1
,2
,4
]}

Liu, Yuhuan ^{[1
,2
,4
]}

Ruan, Roger ^{[1
,2
,4
]}

机构：

[1] Univ Minnesota, Ctr Biorefining, St Paul, MN 55108 USA

[2] Univ Minnesota, Dept Bioprod & Biosyst Engn, St Paul, MN 55108 USA

[3] Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China

[4] Nanchang Univ, Minist Educ, Engn Res Ctr Biomass Convers, Nanchang 330047, Jiangxi, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 33期

基金：

中国国家自然科学基金;

关键词：

DIMETHYL ETHER DME; SOLID-ACID CATALYSTS; HYBRID CATALYSTS; FLUIDIZED-BED; ALTERNATIVE FUEL; SYNTHESIS GAS; METHANOL; BIOMASS; DEHYDRATION; GASIFICATION;

D O I：

10.1039/c5ra02814k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, single-step synthesis of DME from syngas on bifunctional catalysts containing Cu-ZnO-Al2O3 and seven different zeolites was investigated. Various characterization techniques were used to determine the structure, reducibility, and surface acidity of the catalysts. The experimental results showed that the zeolite type had great influence on the activity, selectivity and stability of the bifunctional catalyst during the syngas-to-DME process. Zeolite properties including density of weak and strong acid sites, pore structure, and Si/Al distribution were found to affect the CO conversion and DME selectivity of the bifunctional catalyst. In addition, the deactivation of the bifunctional catalyst could be attributed to the sintering of metallic Cu and a loss of the zeolite dehydration activity.

引用

页码：26301 / 26307

页数：7

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