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Morphological effects of CeO2 nanostructures for catalytic soot combustion of CuO/CeO2

Paper ID Volume ID Publish Year Pages File Format Full-Text
54216 47001 2015 5 PDF Available
Title
Morphological effects of CeO2 nanostructures for catalytic soot combustion of CuO/CeO2
Abstract

•Rod and ellipsoid shaped CeO2 nanostructures.•Large external surface area and mesopore volume for CuO/CeO2 nanorods.•CuO/CeO2 catalysts are used for soot combustion.•Effective soot combustion at lower temperature compared with CuO/CeO2 prepared without surfactant.

Rod and ellipsoid shaped CeO2 nanostructures were prepared using self-assemblies of amine surfactants as templates through the decomposition of cerium carbonate hydroxide. The morphologies of the products were greatly influenced by amine surfactants with different alkyl chain lengths. Different shaped CeO2 nanostructures supported CuO (CuO/CeO2) catalysts were prepared by a conventional impregnation method. CuO/CeO2 nanorods showed high reducibility at lower temperature, larger amount of oxygen species from H2-TPR and possessed larger external surface area and mesopore volume from N2 adsorption as compared with CuO/CeO2 with uncontrolled morphology. These catalysts showed effective soot combustion at lower temperature under tight contact condition using carbon black (CB) as a model of soot particle, as compared with CuO/CeO2 with uncontrolled morphology. Larger external surface area and mesopore volume of CuO/CeO2 catalysts contributed to the improved physical contact condition between CeO2 catalysts and aggregated CBs. Surface reducibility and the improved physical contact condition affected greatly their catalytic activity for soot combustion.

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Keywords
CeO2 nanostructures; CuO/CeO2; Morphology; Self-assembly; Soot combustion
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Morphological effects of CeO2 nanostructures for catalytic soot combustion of CuO/CeO2
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 246, 15 May 2015, Pages 67–71
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