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Catalytic wet air oxidation of phenol over metal catalyst (Ru,Pt) supported on TiO2–CeO2 oxides

Paper ID Volume ID Publish Year Pages File Format Full-Text
53633 46977 2015 6 PDF Available
Title
Catalytic wet air oxidation of phenol over metal catalyst (Ru,Pt) supported on TiO2–CeO2 oxides
Abstract

•Ru and Pt supported on sol–gel-derived TiO2–x wt% CeO2.•High oxygen storage capacities of the materials are detrimental to catalytic performances.•The presence of Lewis acid sites promotes the phenol total oxidation.

The catalytic performances of Ru and Pt supported on TiO2–x wt% CeO2 were studied in catalytic wet air oxidation (CWAO) of phenol at 160 °C and 20 bar of pure oxygen pressure. Contrary to expectations, improved oxygen storage capacities of the materials prove to be detrimental to catalytic performances since they favor the formation of polymers in solution and the accumulation of adsorbed species. On the opposite, the presence of Lewis acid sites promotes the phenol total oxidation. They would favor the activation of the hydroxyl function, thus promoting the ortho-oxidation of phenol and finally the formation of CO2. On the other hand, platinum appears to be more efficient than ruthenium for CWAO of phenol.

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Keywords
Catalytic wet air oxidation; Phenol; OSC; Lewis acid site; Noble metals; Mixed oxides
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Catalytic wet air oxidation of phenol over metal catalyst (Ru,Pt) supported on TiO2–CeO2 oxides
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 258, Part 2, 1 December 2015, Pages 564–569
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