Reaction Kinetics, Mechanisms and Catalysis
Volume/Issue:
Volume 107: Issue 2
Preferential oxidation of CO on Ni/CeO2 catalysts in the presence of excess H2 and CO2
Authors:
Sachin Malwadkar Catalysis Division, CSIR-National Chemical Laboratory, Pune 411008, India

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Parthasarathi Bera Surface Engineering Division, CSIR-National Aerospace Laboratories, Bangalore 560017, India

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M. S. Hegde Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India

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C. V. V. Satyanarayana Catalysis Division, CSIR-National Chemical Laboratory, Pune 411008, India

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Pages:
405–419
Online Publication Date:
12 Jul 2012
Publication Date:
01 Dec 2012
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s11144-012-0477-6
Keywords:
Fuel cells; CO-PROX; Ni; CeO2; Methanation
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Abstract

Preferential oxidation of CO (CO-PROX) was carried out over Ni supported on CeO2 prepared by the co-precipitation method. The influence of metal loadings (2.5, 5 and 10 wt.% Ni) and the reaction conditions such as reaction temperature and feed composition on CO oxidation and oxidation selectivity were evaluated by using dry reformate gas. No other reactions like CO or CO2 methanation, coking, reverse water gas shift (RWGS) reaction is observed in the temperature range of 100–200 °C on these catalysts. Hydrogen oxidation dominates over CO oxidation above the temperature of 200 °C. An increase in oxygen leads to an increase in CO conversion but a simultaneous decrease in the O2 selectivity. It has been noticed that 5 and 10 % Ni/CeO2 show better catalytic activity towards CO-PROX reaction. These catalysts were characterized by SBET, XRD, TEM, XPS and H2-TPR.

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Cover Reaction Kinetics, Mechanisms and Catalysis
Reaction Kinetics, Mechanisms and Catalysis
Print ISSN:
1878-5190
Online ISSN:
1878-5204

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Reaction Kinetics, Mechanisms and Catalysis
Language English
Size B5
Year of
Foundation		 1974
Volumes
per Year		 1
Issues
per Year		 6
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1878-5190 (Print)
ISSN 1878-5204 (Online)

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