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The effect of support and synthesis method on the methanation activity of alumina-supported cobalt–ruthenium–lanthana catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
55644 47060 2011 6 PDF Available
Title
The effect of support and synthesis method on the methanation activity of alumina-supported cobalt–ruthenium–lanthana catalysts
Abstract

The effect of alumina support source as well as preparation method on the methanation activity of cobalt catalysts promoted with lanthanum and ruthenium was investigated. The catalysts were prepared by incipient wetness impregnation using either an acetone and ethanol mix (ratio 4:1 – non-aqueous) or using a dilute nitric acid solution (aqueous) on two commercial aluminas, Puralox SBA200 or Norton type SA6176 alumina. The catalysts were characterised by nitrogen adsorption/desorption, X-ray diffraction, temperature-programmed reduction, temperature-programmed desorption of hydrogen and Fourier transform infrared spectroscopy. Both the support and synthesis method were found to influence the methanation activity with the non-aqueous plus Puralox combination giving the best performance. The activity differences could arise from modification of surface properties leading to variations in cobalt crystallite size and hence improved cobalt metal dispersion.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (68 K)Download as PowerPoint slideHighlights► Non-aqueous solutions were investigated for impregnating γ-alumina with La/Co/Ru. ► Non-aqueous impregnation delivered higher Co dispersion compared with aqueous. ► Non-aqueous impregnation decreased Co-alumina interaction compared with aqueous. ► Co dispersion governed catalyst methanation activity.

Keywords
Cobalt; Ruthenium; Lanthanum; Impregnation; Alumina; Methanation
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The effect of support and synthesis method on the methanation activity of alumina-supported cobalt–ruthenium–lanthana catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 178, Issue 1, 15 December 2011, Pages 79–84
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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