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Catalytic preferential oxidation of carbon monoxide over platinum supported on lanthanum ferriteeceria catalysts for cleaning of hydrogen

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Title Catalytic preferential oxidation of carbon monoxide over platinum supported on lanthanum ferriteeceria catalysts for cleaning of hydrogen
 
Creator Gosavi, Priti V.
Biniwale , Rajesh B.
 
Subject Materials Science
 
Description Since hydrogen is produced by reforming of hydrocarbon it contains carbon monoxide (CO). In order to make hydrogen suitable for proton exchange membrane fuel cell application there is need to reduce concentration of CO less than 100 ppm. WatereGas-Shift reactions subsequent to reforming lower CO concentration in H2 to about 1e1.5% by volume. Preferential oxidation of CO (PROXeCO) using a catalyst is therefore important for further cleaning up of CO from H2. The catalyst in this study is platinum supported over lanthanum ferriteeceria (Pt/LaFeO3eCeO2) exhibits excellent activity of 99.8% and selectivity of 95.7% at a relatively lower temperature of 100 _C with an equivalence ratio of 3 for PROX eCO. The concentration of CO is reduced from 1% v/v in feed to ca. 30 ppm in product gas with rela-tively lower loss of hydrogen is the most significant achievement in this study. The catalyst is selective towards CO oxidation as the hydrogen loss is relatively low (ca. 3.8%) and there is no methane formation. The improvement in catalytic activity and selectivity is attributed to the strong metal support interaction and open morphology of catalyst. The results obtained in this study reveal the excellent catalytic activity by using LaFeO3eCeO2 as support for Pt catalyst.
 
Publisher Elsevier
 
Date 2013-01-15
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/535/1/J_Power_Sources_2012_PROX.pdf
Gosavi, Priti V. and Biniwale , Rajesh B. (2013) Catalytic preferential oxidation of carbon monoxide over platinum supported on lanthanum ferriteeceria catalysts for cleaning of hydrogen. Journal of Power Sources, 222. pp. 1-9. ISSN 0378-7753
 
Relation http://www.sciencedirect.com/science/article/pii/S037877531201230X
http://neeri.csircentral.net/535/