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MgAl-LDO mixed oxide derived from layered double hydroxide: A potential support for CoMo sulfur-resistant water–gas shift catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
49814 46768 2016 4 PDF Available
Title
MgAl-LDO mixed oxide derived from layered double hydroxide: A potential support for CoMo sulfur-resistant water–gas shift catalyst
Abstract

•Mg-Al layered double oxides (MgAl-LDOs) can be a potential support for CoMo sulfur-resistant water gas shift catalyst.•The CoMo/MgAl-LDO shows higher activity than the commercial CoMo/MgAl2O4 catalyst;•Mg/Al molar ratio changes the reduction and sulfidation of CoMo/MgAl-LDO catalysts, and thus influences their activity.

A series of Mg–Al layered double oxides (MgAl-LDOs) with different Mg/Al molar ratios (Mg/Al = 3–6) was synthesized by calcination of Mg–Al layered double hydroxides, and further used to prepare CoMo water–gas shift (WGS) catalysts by incipient-wetness impregnation method. The as-synthesized CoMo/MgAl-LDO catalysts were investigated by systematically physicochemical characterizations. The CoMo/MgAl-LDO (Mg/Al = 5) catalyst showed much higher catalytic activity than a commercial CoMo/MgAl2O4 catalyst, indicating the MgAl-LDOs can be a potential support for the CoMo catalyst. H2-TPR and H2S-TPS studies suggest that the Mo species are easier to be reduced and thus more sulfide phases are formed on CoMo/MgAl-LDO (Mg/Al = 5) catalyst.

Keywords
CoMo; Water–gas shift (WGS); Layered double oxide (LDO); Layered double hydroxide (LDH)
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MgAl-LDO mixed oxide derived from layered double hydroxide: A potential support for CoMo sulfur-resistant water–gas shift catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 78, 10 March 2016, Pages 44–47
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