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Catalytic wet air oxidation of p-coumaric acid on CeO2, platinum and gold supported on CeO2 catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
49085 46547 2006 10 PDF Available
Title
Catalytic wet air oxidation of p-coumaric acid on CeO2, platinum and gold supported on CeO2 catalysts
Abstract

p-Coumaric acid is representative of the polyphenolic fraction typically found in olive milling waste waters (OMWW). The catalytic wet air oxidation of p-coumaric acid has been investigated at 353 K at P = 2 MPa, using CeO2, Pt and Au supported on CeO2 catalysts. The influence of the metal and of the preparation method of the catalysts on the catalytic activity has been investigated.Upon addition of Pt to CeO2, the rate of oxidation of p-coumaric acid increases whereas addition of gold do not lead to a significant difference of the activity of CeO2. On all the catalysts investigated, the abatement of total organic carbon (TOC) was ≥80% after 300 min of reaction. Catalysts containing metallic platinum are the most effective towards the mineralization of the organic carbon to CO2 and the degree of mineralization (DM%) was higher than 50%. On CeO2 and Au–CeO2 catalysts a great contribute to the abatement of TOC is given from a significant adsorption of the organic substrates on the solid.

Keywords
CWAO; p-Coumaric acid; Ceria; Platinum catalysts; Gold catalysts
First Page Preview
Catalytic wet air oxidation of p-coumaric acid on CeO2, platinum and gold supported on CeO2 catalysts
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 68, Issues 1–2, 26 October 2006, Pages 28–37
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis