非贵金属催化剂用于乳酸乙酯加氢制1,2-丙二醇  

Study of non-noble metal catalysts for catalytic hydrogenation of ethyl lactate to propanediol

作　　者：胡凌波[1] 王波[1] 鲍涛[1] 计伟荣[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,浙江杭州310014

出　　处：《工业催化》2013年第10期71-75,共5页Industrial Catalysis

摘　　要：在间歇式反应釜考察了非责金属催化剂对乳酸乙酯液相加氢的催化性能,比较Ni、Cu、Co和Mo负载于γ-Al2O3的催化剂活性,研究添加Cr、Zn、Fe和Sn作为助剂的催化剂加氢效果.结果表明,Cu-Cr催化剂具有较佳的催化性能,n（Cu）∶ n（Cr） =2∶1时,催化剂活性最优.考察搅拌速率、催化剂粒径和催化剂用量对乳酸乙酯催化加氢的影响.在乙醇作溶剂、反应温度200℃、氢压3 MPa、搅拌速率900 r·min-1、底物浓度5 g·（100mL）-1、催化剂粒径（80～ 100）目和催化剂用量0.04 g·mL-1条件下,乳酸乙酯转化率和1,2-丙二醇选择性分别达到79.8％和80.1％.The catalytic performance of non-noble metal catalysts for liquid phase hydrogenation of ethyl lactate was investigated in a batch reactor. The activities of Ni, Cu, Co and Mo supported γ-Al2O3 catalyst were compared and their catalytic performances of the catalysts with different additives including Cr, Zn, Fe and Sn were studied. The experimental results indicated that Cu-Cr catalyst with Cu/Cr molar ratio of 2：1 exhibited the best activity. The influence of stirring rate ,catalyst particle size and catalyst dosage on the catalytic hydrogenation of ethyl lactate was investigated. Ethyl lactate conversion of 79.8% and the selectivity to 1,2-propanediol of 80.1% were attained under the condition as follows：ethanol as the sol- vent, reaction temperature 200 ℃, hydrogen pressure 3 MPa, stirring rate 900 r . min- 1, substrate concen- tration 5 g . （100mL） -1 ,catalyst particle size （80- 100） mesh and catalyst dosage 0.04 g . mL-1.

关 键 词：精细化学工程 乳酸乙酯 1 2-丙二醇 非贵金属催化剂 催化加氢 

分 类 号：O643.36[理学—物理化学] TQ426.7[理学—化学]