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Comparison study of preferential oxidation of CO over nanocrystalline Cu/CeO2 catalysts synthesized by different preparation methods

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Title Comparison study of preferential oxidation of CO over nanocrystalline Cu/CeO2 catalysts synthesized by different preparation methods
 
Creator Adak, Shubhadeep
Ahmad, Md Sarfaraz
Sadhu, Souvik
Khatun, Rubina
Prasad, V V D N
Bal, Rajaram
 
Subject Cu-CeO2
PROX
CuO
CeO2
Nanoparticles
Oxygen vacancy
 
Description 121-126
Preferential oxidation of carbon monoxide in presence of excess hydrogen is a promising alternative to restrict the CO
deposition in the Pt-anode in the practical polymer electrolyte membrane fuel cell application. In the present work,
nanocrystalline copper-ceria catalysts have been synthesized by hydrothermal method, wet impregnation method and urea
nitrate combustion method. Their characterizations have been carried out by using X-ray diffraction, transmission electron
microscopy, X . ray photoelectron spectroscopy- It has been found that Cu2+ replaced Ce4+ in cerium oxide, creating oxygen
vacancy. The formation of more nano-sized CeO2 leads to more oxygen vacancies in CeO2 through the formation of
interfacial Cu1+ ions, which also enhances the CO oxidation activity. Among the synthesized Cu-CeO2 catalysts, the catalyst
prepared by hydrothermal method have shown both CO conversion andC O2 selectivity as 100% towards CO oxidation at
373 K in the presence of excess H2 making this catalyst viable for practical fuel cell application..
 
Date 2022-02-16T07:19:59Z
2022-02-16T07:19:59Z
2022-02
 
Type Article
 
Identifier 2583-1321 (Online); 0019-5103 (Print)
http://nopr.niscair.res.in/handle/123456789/59197
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJC Vol.61(02) [February 2022]