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Comparison study of preferential oxidation of CO over nanocrystalline Cu/CeO<sub>2</sub> catalysts synthesized by different preparation methods

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Title Statement Comparison study of preferential oxidation of CO over nanocrystalline Cu/CeO<sub>2</sub> catalysts synthesized by different preparation methods
 
Added Entry - Uncontrolled Name Adak, Shubhadeep ; Light Stock Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248 005, India Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh- 201 002, India
Ahmad, Md Sarfaraz ; Light Stock Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248 005, India
Sadhu, Souvik ; Light Stock Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248 005, India
Khatun, Rubina ; Light Stock Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248 005, India Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh- 201 002, India
Prasad, V V D N; Light Stock Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248 005, India Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh- 201 002, India
Bal, Rajaram ; Light Stock Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248 005, India Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh- 201 002, India
 
Uncontrolled Index Term Cu-CeO2, PROX, CuO, CeO2, Nanoparticles, Oxygen vacancy
 
Summary, etc. 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 Cu<sup>2+</sup> replaced Ce<sup>4+</sup> in cerium oxide, creating oxygen vacancy. The formation of more nano-sized CeO<sub>2 </sub>leads to more oxygen vacancies in CeO<sub>2 </sub>through the formation of interfacial Cu<sup>1+</sup> ions, which also enhances the CO oxidation activity. Among the synthesized Cu-CeO<sub>2</sub> catalysts, the catalyst prepared by hydrothermal method have shown both CO conversion and CO<sub>2</sub> selectivity as 100% towards CO oxidation at 373 K in the presence of excess H<sub>2</sub> making this catalyst viable for practical fuel cell application.
 
Publication, Distribution, Etc. Indian Journal of Chemistry (IJC)
2022-02-21 00:00:00
 
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http://op.niscair.res.in/index.php/IJC/article/view/60705
 
Data Source Entry Indian Journal of Chemistry (IJC); ##issue.vol## 61, ##issue.no## 2 (2022): Indian Journal of Chemistry-(IJC)
 
Language Note en