Preparation of Pd/C catalysts via deposition of palladium hydroxide onto Sibunit carbon and their application to partial hydrogenation of rapeseed oil |
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Authors: | Olga A Simakova Pavel A Simonov Anatoly V Romanenko and Irina L Simakova |
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Institution: | (1) Boreskov Institute of Catalysis SB RAS, Novosibirsk, 630090, Russia |
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Abstract: | Pd/Sibunit catalysts were prepared by deposition of palladium hydroxide onto the support surface in an alkaline medium. It
was found that the palladium distribution throughout the catalyst grain, and the dispersion of Pd particles depend on (i) the order of the addition of H2PdCl4 and Na2CO3 to carbon suspension, (ii) Na2CO3 to H2PdCl4 ratio, and (iii) aging time of the mixture H2PdCl4 + Na2CO3 before its addition to the carbon. The catalysts were tested in the hydrogenation of cyclohexene and rapeseed oil under static
conditions. The yield of trans-isomers as products of partial hydrogenation of rapeseed oil was found to decrease with decreasing the Pd particle size in
the catalysts, as well as with increasing the Pd concentration on the periphery of the support grains. |
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Keywords: | Pd/C catalysts vegetable oil hydrogenation cis-trans isomerization |
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