fulltext.study @t Gmail

Ethanol steam reforming over Ni/ZnAl2O4-CeO2. Influence of calcination atmosphere and nature of catalytic precursor

Paper ID Volume ID Publish Year Pages File Format Full-Text
41201 45880 2011 9 PDF Available
Title
Ethanol steam reforming over Ni/ZnAl2O4-CeO2. Influence of calcination atmosphere and nature of catalytic precursor
Abstract

The hydrogen production from ethanol steam reforming has been studied over Ni/ZnAl2O4-CeO2 catalysts. The influence of calcination atmosphere and nature of catalytic precursor was analyzed. The impregnation of Ni was carried out from two different nickel salts: nitrate (Nt) and acetate (Ac). The catalysts were obtained from the precursor calcination under reductive and oxidative atmospheres. The catalysts obtained from nitrate salt impregnation were the most carbon resistance measured as mmolC/mol reacted C2H5OH, and those obtained under a reductive atmosphere were the most stable, as evidenced by smaller activity losses. The Ni(Nt)/ZnAl2O4-CeO2 obtained under reductive atmosphere was the most active (steady state ethanol conversion = 88%) and stable (activity loss = 14%) under mild reforming conditions (7.8% C2H5OH inlet concentration, H2O:C2H5OH molar ratio = 4.9, reaction temperature = 650 °C and W/F=49 g min molC2H5OH−1W/F=49 g min molC2H5OH−1). The hydrogen selectivity was 49% and the main C-containing products were CO2, CO and C2H4O.

Graphical abstract.Figure optionsDownload full-size imageDownload high-quality image (153 K)Download as PowerPoint slideHighlights► The catalysts prepared from a nitrate solution produce lower amounts of carbon. ► The catalysts obtained under reductive atmosphere were the most stable with smaller activity losses. ► An ethanol conversion of 88% with an activity loss of 14% was obtained over the best catalyst.

Keywords
Ethanol steam reforming; Hydrogen production; Ni/ZnAl2O4-CeO2 catalysts
First Page Preview
Ethanol steam reforming over Ni/ZnAl2O4-CeO2. Influence of calcination atmosphere and nature of catalytic precursor
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 408, Issues 1–2, 28 November 2011, Pages 78–86
Authors
, , , ,
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