Low-temperature water gas shift reaction on combustion synthesized Ce1-xPtxO2-δ catalyst

被引：38

作者：

Bera, P

Malwadkar, S

Gayen, A

Satyanarayana, CVV

Rao, BS

Hegde, MS ^{[1
]}

机构：

[1] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

[2] Natl Chem Lab, Catalysis Div, Pune 411008, Maharashtra, India

来源：

CATALYSIS LETTERS | 2004年 / 96卷 / 3-4期

关键词：

combustion synthesis; Ce1-xPtxO2-delta; low-temperature shift (LTS); H-2; fuel cell;

D O I：

10.1023/B:CATL.0000030123.41351.14

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：

Catalytic activity of Pt2+ ion substituted CeO2 synthesized by solution combustion method was tested for low-temperature water gas shift reaction in H-2 rich steam reformate. XPS studies show that Pt is dispersed as ions and there is no change in Pt oxidation state after the reaction. CO conversion is found to be maximum at 200 degreesC over Ce1-xPtxO2-delta catalysts without any methanation. The values of rate are 1.86 and 4.66 mumol/g/s at 125 and 150 degreesC respectively with a dry gas flow rate of 6 Lh(-1) over 2% Pt/CeO2.

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页码：213 / 219

页数：7

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