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Catalytic combustion of toluene over copper oxide deposited on two types of yttria-stabilized zirconia

Paper ID Volume ID Publish Year Pages File Format Full-Text
53591 46975 2015 6 PDF Available
Title
Catalytic combustion of toluene over copper oxide deposited on two types of yttria-stabilized zirconia
Abstract

•Yttria-stabilized zirconia forms the metastable non-transformable tetragonal phase.•In sol–gel prepared mesoporous YSZ interparticle porosity is dominant.•YSZ obtained by coprecipitation exhibits intraparticle porosity.•Over 5%Cu/coprecipitated YSZ T50 in toluene combustion is achieved at 264 °C.•Porosity of YSZ influences CuO dispersion and its activity in toluene combustion.

Yttria-stabilized zirconia (YSZ) was obtained by the coprecipitation at pH 9.0 and by the sol–gel method. These oxide systems crystallized in the tetragonal phase which was revealed by powder X-ray diffraction (XRD). The YSZ supports were mesoporous solids with different kinds of porosity and various BET specific surface areas determined by low-temperature sorption of nitrogen. The incipient wetness technique was used to modify these materials with different amounts of Cu (2.5, 5.0 and 7.5 wt%). The changes in structural and textural properties of the YSZ supports after the CuO introduction were discussed, and the surface composition of the Cu-loaded samples was studied by X-ray photoelectron spectroscopy (XPS). It was found that the intra- and interparticle porosity influences the dispersion of CuO active phase, which is the parameter determining the catalytic activity in the toluene combustion. The material based on coprecipitated YSZ containing 5 wt% of Cu turned out to be the most active catalyst with T50 = 264 °C and the total conversion of toluene observed at 350 °C.

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Keywords
ZrO2–Y2O3 support; Coprecipitation; Sol–gel; Copper-containing catalysts; Volatile organic compounds
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Catalytic combustion of toluene over copper oxide deposited on two types of yttria-stabilized zirconia
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 257, Part 1, 15 November 2015, Pages 144–149
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