Low Temperature and H2 Selective Catalysts for Ethanol Steam Reforming

被引：0
|
作者：
Hyun-Seog Roh
Yong Wang
David L. King
Alexandru Platon
Ya-Huei Chin
机构：
[1] Institute for Interfacial Catalysis,
[2] Pacific Northwest National Laboratory,undefined
来源：
Catalysis Letters | 2006年 / 108卷
关键词：
H; ethanol steam reforming; acetaldehyde; Rh; CeO; –ZrO;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Supported Rh catalysts have been developed for selective H2 production at low temperatures. Ethanol dehydration is favorable over either acidic or basic supports such as γ-Al2O3 and MgAl2O4, while ethanol dehydrogenation is more favorable over neutral supports. CeO2–ZrO2-supported Rh catalysts were found to be especially effective for hydrogen production. We focused on a support prepared by a co-precipitation method having composition Ce0.8Zr0.2O2. A 2%Rh/Ce0.8Zr0.2O2 catalyst, prepared via impregnation without pre-calcination of support, exhibited the highest H2 yield at 450 °C among various supported Rh catalysts evaluated in this study. This may be due to both the strong interaction between Rh and Ce0.8Zr0.2O2 and the high oxygen transfer rate favoring reforming of acetaldehyde instead of methane production.
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页码：15 / 19
页数：4
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