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Decomposition of 4-phenoxyphenol to aromatics over palladium catalyst supported on activated carbon aerogel

Paper ID Volume ID Publish Year Pages File Format Full-Text
41072 45876 2011 7 PDF Available
Title
Decomposition of 4-phenoxyphenol to aromatics over palladium catalyst supported on activated carbon aerogel
Abstract

Carbon aerogel (CA) was prepared by a sol–gel polymerization of resorcinol and formaldehyde, and a series of activated carbon aerogels (ACA-H3PO4-X, X = 0, 0.5, 1.0, 2.0, and 3.0) were prepared by a chemical activation using different amount of phosphoric acid (X represented weight ratio of H3PO4 with respect to CA). Palladium catalysts were then supported on activated carbon aerogels (Pd/ACA-H3PO4-X, X = 0, 0.5, 1.0, 2.0, and 3.0) by an incipient wetness impregnation method for use in the decomposition of 4-phenoxyphenol to aromatics. 4-Phenoxyphenol was used as a lignin model compound for representing 4-O-5 linkage of lignin. Cyclohexanol, benzene, and phenol were mainly produced by the decomposition of 4-phenoxyphenol. Conversion of 4-phenoxyphenol and total yield for main products (cyclohexanol, benzene, and phenol) were closely related to the average palladium particle size of Pd/ACA-H3PO4-X. Conversion of 4-phenoxyphenol and total yield for main products increased with decreasing average palladium particle size of Pd/ACA-H3PO4-X. Among the catalysts tested, Pd/ACA-H3PO4-1.0 with the smallest average palladium particle size showed the highest conversion of 4-phenoxyphenol and total yield for main products. Conversion of 4-phenoxyphenol and total yield for main products over Pd/ACA-H3PO4-1.0 were much higher than those over palladium catalyst supported on commercial activated carbon (Pd/AC).

Graphical abstract.Figure optionsDownload full-size imageDownload high-quality image (117 K)Download as PowerPoint slideHighlights► Decomposition of 4-phenoxyphenol to aromatics was carried out. ► Palladium catalyst supported on activated carbon aerogel (Pd/ACA-H3PO4-1.0) was used. ► Palladium catalyst supported on commercial activated carbon (Pd/AC) was also tested. ► Pd/ACA-H3PO4-1.0 showed a better catalytic performance than Pd/AC.

Keywords
Activated carbon aerogel; Pd catalyst; Lignin; C–O bond; 4-Phenoxyphenol
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Decomposition of 4-phenoxyphenol to aromatics over palladium catalyst supported on activated carbon aerogel
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 409–410, 15 December 2011, Pages 167–173
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