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Remarkable effect of soft-templating synthesis procedure on catalytic properties of mesoporous carbon supported Ni in hydrodechlorination of trichloroethylene in liquid phase

Paper ID Volume ID Publish Year Pages File Format Full-Text
54092 46996 2015 6 PDF Available
Title
Remarkable effect of soft-templating synthesis procedure on catalytic properties of mesoporous carbon supported Ni in hydrodechlorination of trichloroethylene in liquid phase
Abstract

•Soft-templating method in acidic condition is a very effective way to obtain mesoporous active carbon.•2 wt.% Ni/CST-A active in purification of water from trichloroethylene.•Effects sintering and leaching are not detected for 2 wt.% Ni/CST-A during HDC TCE.

Ordered mesoporous carbon (CST-A) obtained by soft-templating method under acidic condition was used for preparation of nickel containing catalyst by incipient wetness impregnation with an aqueous solution of NiCl2·6H2O. The reduction of as prepared catalysts by 10% H2/Ar at 673 K led to formation of well dispersed active metallic phase with average nickel particles size ∼11 nm. 2 wt.% Ni/CST-A was examined as a catalyst in hydrodechlorination (HDC) of trichloroethylene in liquid phase, without presence of an additional organic solvent in the reaction mixture. Ethane and ethylene were the predominant product of reaction. X-ray diffraction (XRD) and transmission electron microscopy (TEM) studies for catalysts after reduction and after HDC reaction indicated that use of hydrophobic, mesoporous active carbon as the support for nickel led to formation of resistant for sintering and leaching catalyst and the effective material for catalytic removal of trichloroethylene from water. Post-reaction deposits investigated by the temperature programmed hydrogenation (TPH) showed substantial amounts of carbon-containing deposit, with C2-hydrocarbons desorbing at a relatively low temperature (∼650 K).

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Keywords
Nickel; Trichloroethylene; Hydrodechlorination; Liquid phase; Mesoporous carbons
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Remarkable effect of soft-templating synthesis procedure on catalytic properties of mesoporous carbon supported Ni in hydrodechlorination of trichloroethylene in liquid phase
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 251, 1 August 2015, Pages 60–65
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