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Complete oxidation of benzene with cobalt oxide and ceria using the mesoporous support SBA-16

Paper ID Volume ID Publish Year Pages File Format Full-Text
40028 45843 2013 6 PDF Available
Title
Complete oxidation of benzene with cobalt oxide and ceria using the mesoporous support SBA-16
Abstract

•SBA-16 and CoCe/SBA-16 structures are characteristic of a cubic Im3m symmetry.•A highly regular mesoporous structure, high SBET and Dv exist in the catalysts.•Addition of ceria can greatly improve the oxidation properties compared to Co/SBA-16.•CoCe(18:1)/SBA-16 exhibits the highest catalytic activity for benzene oxidation at 265 °C.

In this investigation, SBA-16 was used to support metal (M = Cr, Mn, Fe, Co, Ni, Cu) oxides and ceria catalysts for the complete oxidation of benzene. The influence of a ceria promoter on the structure of SBA-16 and the catalytic performance of Co/SBA-16 were investigated. Mesoporous SBA-16 was found to have high surface area (472.1 m2/g) and large pore volume (0.69 cm3/g). The mesoporous, cage-like structure of SBA-16 was maintained throughout the preparation of CoCe supported catalysts. The addition of ceria promoted the reduction of cobalt oxide at a lower temperature and greatly affected its catalytic activity. These effects could be attributed to the good dispersion of Co3O4 on SBA-16 and the strong interaction between Co3O4 and CeO2. Catalysts with appropriate Ce greatly enhanced the activity of Co/SBA-16 for complete benzene oxidation; the catalyst CoCe(18:1)/SBA-16 exhibited the highest activity at 265 °C. The high catalytic activity can likely be attributed to the high dispersion of Co3O4 on SBA-16, the high SBET, and the strong interaction between Co3O4 and CeO2.

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Keywords
Mesoporous materials; SBA-16; Co/Ce catalysts; Benzene; Catalytic oxidation
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Complete oxidation of benzene with cobalt oxide and ceria using the mesoporous support SBA-16
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 467, 2 October 2013, Pages 1–6
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