Characterization and performance of a ZnO-ZnCr2O4/CeO2-ZrO2 monolithic catalyst for methanol auto-thermal reforming process

被引：22

作者：

Liu, Na ^{[1
,2
]}

Yuan, Zhongshan ^{[1
]}

Wang, Shudong ^{[1
]}

Zhang, Chunxi ^{[1
]}

Wang, Shujuan ^{[1
]}

Li, Deyi ^{[1
]}

机构：

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

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2008年 / 33卷 / 06期

基金：

中国国家自然科学基金;

关键词：

hydrogen; monolithic catalysts; ZnO; ZnCr2O4; CeO2-ZrO2; methanol auto-thermal reforming;

D O I：

10.1016/j.ijhydene.2007.12.058

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 series of monolithic catalysts of mixed metal oxides (ZnO-ZnCr2O4/CeO2-ZrO2) for methanol auto-thermal reforming (ATR) has been studied. The CeO2-ZrO2 modified Zn-Cr-oxide catalysts showed high selectivities and stabilities. Characterization by XRD and TPR showed that the Ce/Zr molar ratio was an important factor for the stabilities of the Zn-Cr catalysts due to the redox properties of the CeO2-ZrO2. The optimal molar ratio of Ce to Zr was 4/1. The addition of the CeO2-ZrO2 mixed oxides decreased the crystallite size of the Zn-Cr oxide. Operation parameters such as the ratios of oxygen to methanol and water to methanol were studied. The ZnO-ZnCr2O4/CeO2-ZrO2 catalyst exhibited very good stability during 1000 h test. (c) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：1643 / 1651

页数：9

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