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Synthesis of highly active CuO–CeO2 nanocomposites for preferential oxidation of carbon monoxide at low temperatures

Paper ID Volume ID Publish Year Pages File Format Full-Text
52234 46867 2008 5 PDF Available
Title
Synthesis of highly active CuO–CeO2 nanocomposites for preferential oxidation of carbon monoxide at low temperatures
Abstract

CuO–CeO2 nanocomposites were prepared by coprecipitation of nitrates at various pH values and used for preferential oxidation (PROX) of CO in a hydrogen rich gas. Precipitation at high pH led to a high concentration of CeO2 nucleation and abundant active Cui sites (Cu atoms at interface between CuO and CeO2) on prepared nanocomposites. The reducibility of CuiO and its turnover frequency for PROX were increased with the pH during preparation of nanocomposites. Catalysts coprecipitated at pH ⩾ 12 exhibited excellent CO conversion (>99%) and distinguished CO selectivity (88%) for PROX at a low reaction temperature of 125 °C.

Keywords
Preferential oxidation of CO; Synthetic reformates; Copper catalyst; Ceria
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Synthesis of highly active CuO–CeO2 nanocomposites for preferential oxidation of carbon monoxide at low temperatures
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 5, 20 March 2008, Pages 670–674
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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