The effect of support and synthesis method on the methanation activity of alumina-supported cobalt–ruthenium–lanthana catalysts
作者： Esther Kok , Noel Cant , David Trimm , Jason Scott
DOI: 10.1016/J.CATTOD.2011.09.015
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摘要: Abstract The effect of alumina support source as well preparation method on the methanation activity cobalt catalysts promoted with lanthanum and ruthenium was investigated. were prepared by incipient wetness impregnation using either an acetone ethanol mix (ratio 4:1 – non-aqueous) or a dilute nitric acid solution (aqueous) two commercial aluminas, Puralox SBA200 Norton type SA6176 alumina. characterised nitrogen adsorption/desorption, X-ray diffraction, temperature-programmed reduction, desorption hydrogen Fourier transform infrared spectroscopy. Both synthesis found to influence non-aqueous plus combination giving best performance. differences could arise from modification surface properties leading variations in crystallite size hence improved metal dispersion.
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