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Preparation of carbon nanofibres supported palladium catalysts for hydrodechlorination reactions

Paper ID Volume ID Publish Year Pages File Format Full-Text
52036 46862 2008 5 PDF Available
Title
Preparation of carbon nanofibres supported palladium catalysts for hydrodechlorination reactions
Abstract

Palladium catalysts (0.5 and 1 wt%) supported on carbon nanofibres were prepared and tested for tetrachloroethylene (TTCE) catalytic hydrodechlorination working with high organic loadings (using TTCE/toluene mixture, 0.9 M, that simulate real chlorinated wastes). For comparison, a commercial 0.5%-Pd/activated carbon catalyst was also tested for this reaction. CNF-based catalysts showed lower initial activity than the activated carbon-supported catalyst (40% vs. 60% initial conversion) but higher stability (after 25 h on stream activated carbon-based catalyst is completely deactivated whereas CNF-based catalysts show activities of about 15%). The fresh and used catalysts were characterized by BET, TEM, SEM, XRD and XPS. Results obtained suggest that the catalyst deactivation is caused by a combination of coke formation (lower amounts than in the case of conventional supports), and chlorine-poisoning.

Keywords
Tetrachloroethylene; Hydrodechlorination; Pd catalyst; Carbon nanofibres
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Preparation of carbon nanofibres supported palladium catalysts for hydrodechlorination reactions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 10, 10 June 2008, Pages 2080–2084
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
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Price after discount Only $4.95
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