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The role of Fe addition on the activity of Pd-containing catalysts in multiphase hydrodechlorination

Paper ID Volume ID Publish Year Pages File Format Full-Text
43876 45993 2006 10 PDF Available
Title
The role of Fe addition on the activity of Pd-containing catalysts in multiphase hydrodechlorination
Abstract

Multiphase hydrodechlorination of 1,4-dichlorobenzene, hexachlorobenzene and 2,4,8-trichlorodibenzofurane was studied in the presence of Pd/C and Pd-Fe/C catalysts. The effect of the addition of a second metal to Pd/C was investigated. The content (1–12 wt.%) and ratio of metals were varied to determine their influence on catalytic activity, which was demonstrated to strongly depend on metal ratio in multiphase hydrodechlorination systems.Metal–metal interaction and structure of bimetallic particles were studied by magnetic measurements and TPR analysis. Bimetallic particles consisted of Pd-enriched PdFe alloy. Also Fe2O3 was presented on the surface of catalyst. Based on catalytic performance, magnetic measurements, and TPR, two aspects of the influence of iron addition were considered: (1) formation of Pd-enriched PdFe alloy, which resulted in an increase of catalytic activity of bimetallic catalysts in comparison with Pd/C; (2) formation of FeCl3 under HDC reaction condition, which prevented complete chlorination of palladium, possibly leading to its deactivation.

Keywords
Hydrodechlorination; Bimetallic catalyst; Palladium; Multiphase reaction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 302, Issue 1, 21 March 2006, Pages 32–41
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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