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题名: Preparation, characterization and effect of Ce-Zr washcoat on Zn-Cr monolithic catalysts for methanol autothermal reforming
作者: Liu, N;  Yuan, ZS;  Zhang, CX;  Wang, SJ;  Li, DY;  Wang, SD
关键词: ceria ;  zirconia ;  composite oxide ;  sol-gel method ;  zinc oxide ;  chromia ;  monolith ;  methanol autothermal reforming
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2005-12-01
卷: 26, 期:12, 页:1078-1082
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The Ce-Zr colloid with a narrow particle size distribution was prepared by the sol-gel method and used as a washcoat of the Zn-Cr monolithic catalyst for methanol autothermal reforming to hydrogen. The particle size of the Ce-Zr colloid can be effectively adjusted by peptization treatment in order to obtain highly adhesive and uniform washcoat. TEM and XRD results confirmed that Ce-Zr solid solution was formed and the particle size of Ce-Zr composite oxide powder calcined at 1073 K was still maintained within 20 - 50 nm. To avoid coating flaking, different drying methods during coating process were investigated in details. The results indicated that the microwave method was more favorable for the drying of moisture in honeycomb channels, while the oven drying method caused washcoat severely cracking. The Zn-Cr/Ce-Zr monolithic catalyst was more stable than that of no Ce-Zr washcoat because of the unique redox property of Ce-Zr mixed oxide. The temperature of the catalyst bed indicated that Ce-Zr washcoat exhibited better energy match of exothermic reaction and endothermic reaction, avoiding the hot-spot and prohibiting active species sintering.
语种: 英语
WOS记录号: WOS:000234620700009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139935
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Liu, N,Yuan, ZS,Zhang, CX,et al. Preparation, characterization and effect of Ce-Zr washcoat on Zn-Cr monolithic catalysts for methanol autothermal reforming[J]. CHINESE JOURNAL OF CATALYSIS,2005,26(12):1078-1082.
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