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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
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  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Liquid-phase hydrodechlorination of CCl4 in a medium of acetal and diethyl carbonate

Cited 10 times inthomson ciCited 12 times inthomson ci
Title
Liquid-phase hydrodechlorination of CCl4 in a medium of acetal and diethyl carbonate
Other Titles
Liquid-phase hydrodechlorination of CCl4 in a medium of acetal and diethyl carbonate
Author
Bae, Jong WookJang, Eun JooJo, Dong HyunLee, Jae SungLee, Kyung Hee
Keywords
selective hydrodechlorination; CCl4; CHCl3; ethanol; diethyl carbonate (DEC; 1-1-diethoxyethane (acetal); FT-IR; temperature-programmed surface reaction (TPSR) supported Pd or Pt catalysts; in situ generation of H2O2
Issue Date
2003-10
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, v.206, no.1-2, pp.225 - 238
Abstract
During the liquid-phase hydrodechlorination (HDC) Of CCl4 over supported Pd or Pt catalysts in the presence of C2H5OH and molecular oxygen, the selective catalytic synthesis of CHCl3 as well as the conversion of C2H5OH to diethyl carbonate (DEC) and 1,1-diethoxyethane (DEE) was observed. The protic solvent, C2H5OH, could easily donate proton that reacts with the adsorbed chlorine on the catalyst surface to form HCl. This facile removal of chlorine from the catalyst surface could be the main reason for the enhancement of the catalytic stability and conversion of C2H5OH. The rate of DEC formation was accelerated with the increase in the partial pressure of molecular oxygen, and the selectivity to DEE was enhanced by the increased surface acidity of catalysts. Compared to the reactions of the hydrodechlorination of CCl4 without C2H5OH, the conversion of CCl4 and the selectivity to CHCl3 was greatly enhanced in the presence of C2H5OH. (C) 2003 Elsevier B.V. All rights reserved
URI
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DOI
10.1016/S1381-1169(03)00185-7
ISSN
1381-1169
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ECHE_Journal Papers
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