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The role of the distribution of Ce species on MoO3/CeO2–Al2O3 catalysts in sulfur-resistant methanation

Paper ID Volume ID Publish Year Pages File Format Full-Text
50127 46781 2013 4 PDF Available
Title
The role of the distribution of Ce species on MoO3/CeO2–Al2O3 catalysts in sulfur-resistant methanation
Abstract

CeO2–Al2O3 supports were prepared by different methods and applied as MoO3/CeO2–Al2O3 catalysts for sulfur-resistant methanation. All characterization analyses of the catalysts indicated that when the Ce species are distributed in the bulk of the catalysts, they are favorable for the stability of the catalyst whereas when the Ce species are distributed on the surface of the catalyst, they are beneficial for the initial activity. Stepwise sulfidation is applied on MoO3/CeO2–Al2O3 catalyst to eliminate surface Ce species and migrate them to the inside of the catalyst, this also demonstrates that the Ce species distributed in the bulk of the catalysts are favorable for the stability.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Two kinds of CeO2–Al2O3 with different distributions of Ce species were used. ► The catalyst is more stable when the Ce species are distributed inside the catalysts. ► The catalyst exhibits a higher activity when the Ce species are distributed on the surface. ► Stepwise sulfidation is applied to eliminate CeO2 on the surface of the catalyst. ► The catalyst sulfided by stepwise sulfidation is more stable.

Keywords
MoO3/CeO2–Al2O3 catalyst; CeO2 distribution; Catalytic activity; Stepwise sulfidation; Sulfidation-resistant methanation
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The role of the distribution of Ce species on MoO3/CeO2–Al2O3 catalysts in sulfur-resistant methanation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 35, 5 May 2013, Pages 32–35
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