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Ni catalysts supported on modified ZnAl2O4 for ethanol steam reforming

Paper ID Volume ID Publish Year Pages File Format Full-Text
41853 45902 2010 8 PDF Available
Title
Ni catalysts supported on modified ZnAl2O4 for ethanol steam reforming
Abstract

Nickel catalysts supported over ZnAl2O4 modified by Ce or/and Zr addition were studied in the steam reforming of ethanol under more severe reaction conditions such as a lower extent of feed dilution and lower space velocities. The catalysts were stable at 650 °C during 35 h in time on stream. The main reaction products were H2, CO2, CO, C2H4O and small amounts of CH4 and C2H4. The catalyst supported over CeO2–ZnAl2O4 was the most active and showed the highest hydrogen selectivity. The addition of ZrO2 decreased the activity and favored the CO production. The lowest degree of Ni2+ reduction over Ni/ZAZr could explain the worst performance of this system. Otherwise, the highest Ni2+ dispersion and the high oxygen mobility from ceria or from Ni–Ce boundary allowed a higher residual activity and an improved coking resistance.

Graphical abstractNickel catalysts supported over ZnAl2O4 modified by Ce or/and Zr addition were studied in the steam reforming of ethanol under more severe reaction conditions. The catalysts were stable at 650 °C during 35 h in time on stream. The catalyst supported over CeO2–ZnAl2O4 was the most active and showed the highest hydrogen selectivity with an improved coking resistance.Figure optionsDownload full-size imageDownload high-quality image (35 K)Download as PowerPoint slide

Keywords
Ethanol steam reforming; Hydrogen production; Ni/ZnAl2O4 catalysts
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Ni catalysts supported on modified ZnAl2O4 for ethanol steam reforming
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 380, Issues 1–2, 31 May 2010, Pages 40–47
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