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Combined H2O and CO2 reforming of CH4 over Ce-promoted Ni/Al2O3 catalyst for gas to liquid (GTL) process: Enhancement of Ni–CeO2 interaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
55513 47056 2012 5 PDF Available
Title
Combined H2O and CO2 reforming of CH4 over Ce-promoted Ni/Al2O3 catalyst for gas to liquid (GTL) process: Enhancement of Ni–CeO2 interaction
Abstract

The effect of Ni–Ce loading method on the catalytic activity and coke formation over Ce-promoted Ni/Al2O3 catalysts was investigated in combined steam and carbon dioxide reforming of methane (CSCRM) to produce synthesis gas with a H2/CO ratio of 2 for gas to liquid (GTL) process. 12 wt%Ni–6 wt%Ce/Al2O3 catalysts prepared by a co-impregnation method exhibited higher catalytic performance and less coke formation than 12 wt%Ni/6 wt%Ce/Al2O3 and 6 wt%Ce/12 wt%Ni/Al2O3 catalysts prepared by a sequential impregnation method due to the improvement of Ni dispersion and high oxygen storage capacity resulting from the intimate contact between Ni and CeO2 on the surface of the catalyst.

Graphical abstract12 wt%Ni–6 wt%Ce/Al2O3 catalysts prepared by a co-impregnation method exhibited higher catalytic performance and less coke formation than 12 wt%Ni/6 wt%Ce/Al2O3 and 6 wt%Ce/12 wt%Ni/Al2O3 catalysts prepared by a sequential impregnation method due to the improvement of Ni dispersion and high oxygen storage capacity resulting from the intimate contact between Ni and CeO2 on the surface of the catalyst.Figure optionsDownload full-size imageDownload high-quality image (165 K)Download as PowerPoint slideHighlights► We investigate the effect of CeO2 loading method on the Ni dispersion of Ce-promoted Ni/Al2O3 catalysts. ► Ce-promoted catalysts are prepared by co-impregnation and consecutive-impregnation methods. ► Co-impregnated Ni–Ce/Al2O3 exhibits highly uniform dispersion of Ni crystallites in contrast with consecutive-impregnation. ► Co-impregnated Ni–Ce/Al2O3 shows high catalytic activity and high coke resistance in combined steam and carbon dioxide reforming. ► Co-impregnation method improves the Ni dispersion and the reducibility and strengthens the interaction between Ni and CeO2.

Keywords
Gas to liquid (GTL); Synthesis gas; Combined steam and carbon dioxide reforming of methane; Ni–CeO2 intimate contact; Coke resistance
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Combined H2O and CO2 reforming of CH4 over Ce-promoted Ni/Al2O3 catalyst for gas to liquid (GTL) process: Enhancement of Ni–CeO2 interaction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 185, Issue 1, 20 May 2012, Pages 126–130
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