カドミウム-アルミナ触媒を用いたマッコウ鯨皮油の不飽和還元

概要

論文の詳細を見る
In the catalytic reduction of sperm blubber oil with cadmium-alumina under high pressure hydrogen, conditions for production of unsaturated alcohols were investigated. This catalyst had excellent selectivity for the formation of unsaturated alcohols, but the less water in this reaction system, the higher temperature and the less cadmium content in the catalyst, the more non-alcoholic products were generated. It was considered that those non-alcoholic products were mainly formed by the dehydration of alcohols and were hydrocarbons containing carbon-carbon unsaturated bond at the terminal of molecule in addition to original unsaturated. Desirable conditions were found to be, for instance, partial pressure of water; 2O3O kg cm2, reaction temperature; 300°C and cadmium content in catalyst; approx. 30%. It seems that no appreciable increase in the rate of reduction can be expected under higher hydrogen pressure than those investigated, from the judgment of relation between the initial rate and fugacity of hydrogen. The catalyst prepared by precipitation method showed excellent duarability in activity and retardation in the formation of by-products such as hydrocarbons and trans isomers as compared with the catalyst prepared by impregnation method. So far as the present investigation, it has been recognized that only iron gave better results than original cadmium-alumina among the metals combined in this catalyst.
日本油化学会の論文