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One-pot solvothermal synthesis of mixed Cu-Ce-Ox nanocatalysts and their catalytic activity for low temperature CO oxidation

Paper ID Volume ID Publish Year Pages File Format Full-Text
40619 45860 2012 7 PDF Available
Title
One-pot solvothermal synthesis of mixed Cu-Ce-Ox nanocatalysts and their catalytic activity for low temperature CO oxidation
Abstract

One-pot solvothermal method has been developed for the synthesis of high-surface area Cu-Ce-Ox binary nanocatalysts with various Cu contents in the presence of oleylamine as capping agent. The obtained binary nanocatalysts were characterized by different techniques including XRD, H2-TPR, TEM, BET and XPS. The influence of Cu contents on their catalytic performance for the CO oxidation was also studied. Our results revealed that the Cu-Ce-Ox binary nanocatalysts show the better catalytic activity compared to those of the conventional Cu-Ce-Ox, bare nano-CeO2 and nano-CuO catalysts. This is ascribed to mutual interaction and synergistic effect between copper oxide species and cerium oxide. Among the obtained nanocatalysts, the Cu-Ce-Ox nanocatalyst with 5.6 wt% Cu (noted as 5.6-Cu-Ce-Ox) exhibits the best catalytic activity; the 50% CO conversion can be reached at 55 °C. H2-TPR profiles show two reduction peaks at low and high temperatures for these catalysts, which could be attributed to the reduction of highly dispersed CuO on the CeO2 surface and the bulk-like CuO species, respectively. Using the one-pot solvothermal synthesis developed in this study, 6–8 wt% Cu content is needed for the high catalytic activity for the CO oxidation at low temperature.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (256 K)Download as PowerPoint slideHighlights► One-pot solvothermal synthesis of the uniform binary Cu-Ce-Ox nanosystem. ► Their catalytic activity for CO higher than that of the conventional catalysts. ► Their high activity due to mutual and synergistic effect between two nanodomains Cu and Ce.

Keywords
Binary Cu-Ce-Ox nanocatalyst; Nanostructure; Porous materials; Mutual interaction; CO oxidation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 447–448, 7 December 2012, Pages 60–66
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
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us