二元系ニッケル触媒における構造と活性

概要

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The binary nickel catalysts were prepared and their characteristic properties evaluated. A carbonate mixture of nickel and other metals, i. e., cerium, chromium, thorium, manganese, and magnesium, prepared from their nitrate mixture, was calcined and reduced. The activity of thesd catalysts on the hydrogenation of castor oil or pyridine was examined. Maximum conversion was obtained with every series of catalyst, in atomic ratio of 8 : 2,cerium, chromium, and thorium were more effective than manganese and magnesium. In order to consider these phenomena from the structure of catalysts, X-ray powder method was used, and mean size of nickel crystallite and strain were separated from half-width of broadening of reflected diagrams. They lie in the range of 60-240 Å and 0.3-2.0%, respectively. Also from the values of BET surface area and line strength in diffraction, high activity caused by such metal oxides as cerium, chromium, and thorium was discussed.
公益社団法人日本薬学会の論文
1970-11-25