摘要
由脂肪酸酯制备高碳醇Ｃｕ－Ｆｅ系催化剂的研究刘寿长②王文祥②陈诵英①（①中国科学院山西煤炭化学研究所，太原０３０００１）（②郑州大学化学系，郑州４５００５２）关键词高碳醇Ｃｕ－Ｆｅ系催化剂加氢反应高碳醇被广泛用于洗涤剂、增塑剂、合成纤维、表面活性剂、...
The hydrogenation reaction for higher alcohols preparation from fatty acid methyl esters with Cu Fe catalysts has been studied. The catalyst is prepared by coprecipitation with Cu(NO 3) 2, Fe(NO 3) 3, Mg metal powder and NaOH. In order to obtain γ Fe 2O 3 in the catalyst, Fe 3+ of Fe(NO 3) 3 should be reduced to Fe 2+ before coprecipitation. XRD shows that the catalyst consists of CuO, γ Fe 2O 3 and MgO after calcination. The optimal composition of the catalyst is CuO 60%, γ Fe 2O 3 35% and MgO 5%, the suitable pH value of coprecipitation is 12 and the calcination temperature of precursor of the catalyst is about 480℃. Mssbauer spectra show that particles size of the catalyst increases and activity of the catalyst decreases when the calcination temperature is over 500℃. The optimal reaction temperature is about 285℃. The pressure of H 2 should be sufficient high, the amount of the catalyst is 3%-5% and the reaction time is 1.5-2.0 h. Fatty acid methyl esters should not contain water and soaps because water can resist reduction of the catalyst and the hydrogenation of soaps is more difficult. Cu Fe catalysts are not toxic, cause no pollution and have higher activity than Cu Cr catalysts.
出处
《分子催化》
EI
CAS
CSCD
1996年第5期382-386,共5页
Journal of Molecular Catalysis(China)
