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Highly efficient Mg(OH)Cl/SiO2 catalysts for selective dehydrochlorination of 1,1,2-trichloroethane

Paper ID Volume ID Publish Year Pages File Format Full-Text
39073 45805 2015 6 PDF Available
Title
Highly efficient Mg(OH)Cl/SiO2 catalysts for selective dehydrochlorination of 1,1,2-trichloroethane
Abstract

•Mg/SiO2 catalysts are active for dehydrochlorination of 1,1,2-trichloroethane.•Catalysts with Mg(NO3)2·6H2O and MgCl2·6H2O as the precursors had identical performances.•A high yield of cis-dichloroethene (83.7%) was obtained on a stable 10Mg(N)/SiO2−300 catalyst.•Mg(OH)Cl is regarded as the active site for the reaction.

A series of Mg catalysts supported on SiO2 were prepared by an incipient wetness impregnation method and tested for gas phase dehydrochlorination of 1,1,2-trichloroethane. It was found that these catalysts were very active and selective for the reaction. The catalytic performance depended on the Mg loading rather than the Mg precursors as the catalysts using Mg(NO3)2·6H2O and MgCl2·6H2O as the precursors showed the similar performance. A catalyst containing 10 wt.% of Mg showed the best performance with a steady state TCE conversion of 92% and cis-dichloroethene selectivity of 91%. Moreover, characterizations of the catalysts revealed the formation of Cl-containing Mg species on the surface during the reaction. The analyses of the compositions of the stable catalysts under working conditions indicated a Cl/Mg ratio of 1, suggesting that Mg(OH)Cl could be the active sites for the reaction.

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Keywords
Dehydrochlorination; 1,1,2-Trichloroethane; cis-1,2-Dichloroethene; Mg(OH)Cl; Heterogeneous catalysis
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Highly efficient Mg(OH)Cl/SiO2 catalysts for selective dehydrochlorination of 1,1,2-trichloroethane
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 508, November 2015, Pages 10–15
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us