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Toluene oxidation on Pd catalysts supported by CeO2–Y2O3 washcoated cordierite honeycomb

Paper ID Volume ID Publish Year Pages File Format Full-Text
48620 46515 2007 6 PDF Available
Title
Toluene oxidation on Pd catalysts supported by CeO2–Y2O3 washcoated cordierite honeycomb
Abstract

A novel CeO2–Y2O3 (CY) washcoat on cordierite honeycomb was prepared by an impregnation method, which was used as a support to prepare a Pd catalyst. A model reaction of the complete combustion of toluene was conducted to evaluate the performance of the developed Pd/CY catalyst. The CY washcoat support and the Pd/CY catalyst were characterized by XRD, Raman spectroscopy, H2-TPR and SEM techniques. The results show that compared with conventional washcoat the CY washcoat has better adhesion and higher vibration- and heat-resistance. The CY washcoat can anchor well Pd onto the cordierite honeycomb substrate. The formation of a CeO2–Y2O3 solid solution and the steady present of PdO occur at high calcination temperatures, resulting in a better thermal stability. On a Pd/CY catalyst calcined at 500 °C, a 99% of toluene conversion was obtained at 210 °C, and it was stable for reaction time up to 30 h.

Keywords
Cordierite honeycomb; CY washcoat; Toluene combustion
First Page Preview
Toluene oxidation on Pd catalysts supported by CeO2–Y2O3 washcoated cordierite honeycomb
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 69, Issues 3–4, 15 January 2007, Pages 213–218
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis