Active carbon-supported nickel–palladium catalysts for hydrodechlorination of 1,2-dichloroethane and 1,1,2-trichloroethene

Active carbon-supported nickel–palladium catalysts for hydrodechlorination of... Norit active carbon-supported Ni–Pd catalysts were prepared, by incipient wetness impregnation, from the metal chlorides NiCl2·6H2O and PdCl2. The catalysts were characterized by temperature-programmed reduction, X-ray diffraction, and scanning electron microscopy, and by temperature-programmed hydrogenation (TPH) of the catalysts after use. When the catalysts were used for gas-phase hydrodechlorination (HDC) of 1,2-dichloroethane (1,2-DCA) and 1,1,2-trichloroethene (TCE), very high activity and stability at a relatively low reaction temperature (503 K) were observed. Hydrodechlorination of TCE led to formation of hydrocarbons as the main products. Use of Ni and Ni–Pd catalysts for hydrodechlorination of 1,2-DCA resulted in very high (~100 %) selectivity for ethene. TPH of the catalysts after use for HDC of 1,2-DCA and TCE revealed the presence of carbon and chlorine-containing deposits on the surfaces of the catalysts. Formation of the NiC x fcc phase and the Ni3C hcp carbide phase were detected for the monometallic nickel and Ni95Pd05 catalysts. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Active carbon-supported nickel–palladium catalysts for hydrodechlorination of 1,2-dichloroethane and 1,1,2-trichloroethene

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Publisher
Springer Netherlands
Copyright
Copyright © 2015 by The Author(s)
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-015-1992-7
Publisher site
See Article on Publisher Site

Abstract

Norit active carbon-supported Ni–Pd catalysts were prepared, by incipient wetness impregnation, from the metal chlorides NiCl2·6H2O and PdCl2. The catalysts were characterized by temperature-programmed reduction, X-ray diffraction, and scanning electron microscopy, and by temperature-programmed hydrogenation (TPH) of the catalysts after use. When the catalysts were used for gas-phase hydrodechlorination (HDC) of 1,2-dichloroethane (1,2-DCA) and 1,1,2-trichloroethene (TCE), very high activity and stability at a relatively low reaction temperature (503 K) were observed. Hydrodechlorination of TCE led to formation of hydrocarbons as the main products. Use of Ni and Ni–Pd catalysts for hydrodechlorination of 1,2-DCA resulted in very high (~100 %) selectivity for ethene. TPH of the catalysts after use for HDC of 1,2-DCA and TCE revealed the presence of carbon and chlorine-containing deposits on the surfaces of the catalysts. Formation of the NiC x fcc phase and the Ni3C hcp carbide phase were detected for the monometallic nickel and Ni95Pd05 catalysts.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Mar 7, 2015

References

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