The effects of PdZn crystallite size on methanol steam reforming

被引：53

作者：

Dagle, Robert A. ^{[1
]}

Chin, Ya-Huei ^{[1
]}

Wang, Yong ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Richland, WA 99352 USA

来源：

TOPICS IN CATALYSIS | 2007年 / 46卷 / 3-4期

关键词：

PdZn alloy; Pd/ZnO catalysts; PdZn crystallites; methanol steam reforming; hydrogen production;

D O I：

10.1007/s11244-007-9009-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Exceptional activity and selectivity of Pd/ZnO catalysts for methanol steam reforming have been attributed to the formation of PdZn alloy. In this paper, we evaluated the crystallite size effects of PdZn alloy on methanol steam reforming. An organic preparation method was used to avoid the complexity from the alteration of ZnO morphology typically associated with the conventional aqueous preparation method. Both Pd loading and reduction temperature (> 350 degrees C) were used to vary the crystallite size of PdZn alloy. Experimental activity studies and transmission electron microscope (TEM) characterizations indicated that formation of large sized PdZn crystallites exhibit high reactivity and low CO selectivity during methanol steam reforming.

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收藏

页码：358 / 362

页数：5

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