1953 年 73 巻 2 号 p. 187-190
The chromium oxide formed by the thermal decomposition, at 350°, of ammonium chromium chromate prepared from chromium salt and chromate, is a mixture of chromium oxides which can be indicated by CrO2. This chromium oxide was used as a catalyst in the high pressure acid reduction of camellia oil in nichrome autoclave but the oxide did not seem to possess any catalytic activity. However, under the present experimental conditions, the inner wall of the autoclave seemed to induce some side reactions so that the above conclusions should be checked by different experimental apparatus. Infrared absorption spectral measurements indicated the presence of a fair amount of ketones and hydrocarbons as the products of side reaction.