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Catalytic hydrodechlorination reactivity of monochlorophenols in aqueous solutions over palladium/carbon catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
52929 46892 2009 3 PDF Available
Title
Catalytic hydrodechlorination reactivity of monochlorophenols in aqueous solutions over palladium/carbon catalyst
Abstract

Monochlorophenols (CPs) were completely hydrodechlorinated with 5% Pd/C in aqueous solutions at room temperature under atmospheric pressure. In the hydrogenation process, 2-CP, 3-CP and 4-CP showed different dechlorination reactivity. It was found the CCl bond in the ortho position of hydroxyl group was the most difficult dechlorination in the hydrogenation of monochlorophenols in aqueous solutions compared to those in meta and para positions. Additionally, bases and solvents also had influences on the hydrodechlorination reactivity and selectivity of monochlorophenols as well as the activity of the catalyst. In aqueous solutions, it was more advantageous to the hydrodechlorination of monochlorophenols during the hydrogenation due to the cleaning function of water. Furthermore, the presence of bases, especially for sodium hydroxide, also ensured the high activity of the catalyst in water.

Keywords
Catalytic hydrodechlorination; Palladium/carbon; Monochlorophenols; Hydrodechlorination reactivity; Aqueous solutions
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Catalytic hydrodechlorination reactivity of monochlorophenols in aqueous solutions over palladium/carbon catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 5, 25 January 2009, Pages 456–458
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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