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Structure Sensitivity in the Hydrodechlorination of Chlorophenols

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Abstract

The gas phase hydrodechlorination of methanolic and mixed methanol/water solutions of 2-chlorophenol, 2,6-dichlorophenol, 2,4,5-trichlorophenol and pentachlorophenol has been studied at 573 K over nickel/silica catalysts of varying (1.5–20.3 wt.% Ni) nickel loading. Each catalyst was 100% selective in promoting hydrodechlorination: the variation of catalytic activity and selectivity with time-on-stream is illustrated and catalyst deactivation is addressed. Dechlorination is quantified in terms of specific rate constants, phenol selectivity/yield and chlorine removal efficiencies. Increasing the nickel loading resulted in a marked increase in dechlorination efficiency while the introduction of water into the feed lowered the activity.

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Authors
  1. Eun-Jae Shin
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  2. Mark A. Keane
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Shin, EJ., Keane, M.A. Structure Sensitivity in the Hydrodechlorination of Chlorophenols. Reaction Kinetics and Catalysis Letters 69, 3–8 (2000). https://doi.org/10.1023/A:1005682804459

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