制备高碳醇稀土改性Cu-Fe催化剂

在Ｃｕ－Ｆｅ系催经剂中添加稀土，利用稀土改性提高Ｃｕ－Ｆｅ系催化剂的活性，或直接利用氮氢混合气还原脂肪酸酯制备碳脂肪醇。用纯氢气作气源，添加１％的Ｓｍ２Ｏ３，高碳醇收率可提高约３％。用氮氢混合气作气源，不含稀土的Ｃｕ－Ｆｅ系催化剂活性大幅度下降，添加Ｙ、ＮＤ等可阻止其活性下降甚至提高其活性，与不含稀土的Ｃｕ－Ｆｅ系催化剂相比，添加１％的Ｎｄ２Ｏ３或１％的Ｙ２Ｏ３可分别提高碳醇收率２９％和３３％。

Cu-Fe Catalysts Modified by Rare Earths for Preparation of High Alcohols from Fatty Acid Esters Reduction

In order to increase activity of Cu Fe catalyst and use the mixture of nitrogen and hydrogen directly for preparation of high alcohols by reducing fatty acid esters, rare earths were used to modify the catalyst. Experiments show that yield of high alcohols increases by 3% as 1% Sm 2O 3 is added to the catalyst when the reduction is carried out under pure hydrogen. The yield greatly decreases when the reduction is carried out under the mixture of hydrogen and nitrogen. Catalysts activities modified by Y and Nd can be evidently improved and even enhanced. The yields increase by 33% and 29% when 1% Y 2O 3 and 1% Nd 2O 3 are added to the catalyst, respectively.