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New Pd/hierarchical macro-mesoporous ZrO2, TiO2 and ZrO2-TiO2 catalysts for VOCs total oxidation

Paper ID Volume ID Publish Year Pages File Format Full-Text
44024 46000 2006 9 PDF Available
Title
New Pd/hierarchical macro-mesoporous ZrO2, TiO2 and ZrO2-TiO2 catalysts for VOCs total oxidation
Abstract

Macro-mesoporous ZrO2, TiO2 and ZrO2-TiO2 have been synthesized and used as catalytic supports for volatile organic compounds (VOCs) oxidation. These supports present high surface areas. Stability of the porous structure is observed after calcination at 400 °C for ZrO2-TiO2 and TiO2 but partial breakdown of the structure occurs for ZrO2 by the crystallization into tetragonal phase. All these Pd impregnated catalysts are found to be powerful catalysts for total oxidation of toluene and chlorobenzene. Pd/TiO2 presents the highest catalytic potential. The lowest toluene adsorption enthalpy, the low coke content observed after the catalytic test, PdO particles easily reducible should explain the interesting catalytic behaviour of Pd/TiO2. However, production of polychlorinated compounds PhClx (with x = 2–6) occurs at low temperature during the chlorobenzene oxidation and this amount is lower over Pd/TiO2-ZrO2 compared to Pd/TiO2. But chlorobenzene is readily converted into HCl, CO2 and H2O at a temperature of 530 °C.

Keywords
Nanostructured mesoporous zirconia and titania; Total oxidation of VOC; Palladium; Toluene and chlorobenzene adsorptions
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New Pd/hierarchical macro-mesoporous ZrO2, TiO2 and ZrO2-TiO2 catalysts for VOCs total oxidation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 310, 17 August 2006, Pages 61–69
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