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前言该实验的目的之一是通过选择加氢提高豆油的稳定性,铜催化剂曾表现出较一般通用的镍催化剂有较高的选择性,均相的乙酰丙酮镍催化剂比非均相的镍催化剂有较高的选择性,但是,这种均相催化剂只是在甲醇溶液中才有活性,并同时将甘油三酸酯转化为甲酯。现在已观测了乙酰丙酮钯对豆油的催化选择加氢。我们还研究了几种Ⅷ族金属的乙酰丙酮络合物,Cu(Ⅲ)、Co(Ⅱ)和Co(Ⅲ)的乙酰丙酮络合物对豆油加氢是没有催化活性的,而Ni(Ⅱ)和Cr(Ⅲ)的乙酰丙酮络合物仅有很小的活性。
Introduction One of the purposes of this experiment was to increase the stability of soybean oil by selective hydrogenation. Copper catalysts have been shown to be more selective than the more common nickel catalysts. The homogeneous nickel acetylacetonate catalyst is more stable than the heterogeneous nickel catalyst However, this homogeneous catalyst is only active in methanol and at the same time converts triglycerides to methyl esters. It has now been observed that palladium acetylacetonate catalyzes the selective hydrogenation of soybean oil. We also investigated the acetylacetone complex of several Group VIII metals. The acetylacetone complexes of Cu (Ⅲ), Co (Ⅱ) and Co (Ⅲ) have no catalytic activity for the hydrogenation of soybean oil. However, Ni (Ⅱ ) And acetylacetone complex of Cr (III) have only little activity.