离子液体中羰基钴催化3-羟基丙酸甲酯加氢制1,3-丙二醇  

Synthesis of 1,3-propanediol from hydrogenation of methyl 3-hydroxypropionate catalyzed by cobalt carbonyl in room temperature ionic liquids

作　　者：吕志果[1] 王恒生[1] 郭振美[1] 葛晓萍[1] 

机构地区：[1]青岛科技大学化工学院,山东青岛266042

出　　处：《应用化工》2010年第11期1613-1616,1623,共5页Applied Chemical Industry

基　　金：国家自然科学基金(20776071);青岛科技大学引进人才启动基金

摘　　要：以Co2(CO)8为催化剂、离子液体[Bmim]PF6为溶剂,研究3-羟基丙酸甲酯(3-HPM)加氢制1,3-丙二醇(1,3-PDO)的反应,考察了催化剂用量、溶剂、促进剂及氢气压力、反应温度、反应时间对反应的影响。结果表明,在n[Co2(CO)8]/n(3-HPM)=0.05,咪唑为促进剂,反应温度140℃,氢气压力10.5 MPa,反应时间10 h的较佳反应条件下,3-HPM的转化率达94.2%,1,3-PDO的选择性达72.6%。并根据实验结果,提出了可能的催化反应机理。Using Co2（CO）8 as catalyst and [Bmim]PF6 as solvent,the synthesis of 1,3-propanediol（1,3-PDO） by hydrogenation of methyl 3-hydroxypropionate（3-HPM） was studied.The effect of dosage of catalyst,solvent,promoter,hydrogen pressure,reaction temperature,reaction time were investigated.The optimum conditions were obtained as follows：n[Co2（CO）8]/n（3-HPM）=0.05,imidazole as promoter,reaction temperature 140 ℃,hydrogen pressure 10.5 MPa for 10 h.Under these conditions,the conversion of 3-HPM reached 94.2% and the selectivity of 1,3-PDO reached 72.6%.A possible reaction mechanism had also been proposed.

关 键 词：羰基钴 3-羟基丙酸甲酯 加氢 1 3-丙二醇 室温离子液体 

分 类 号：O643.32[理学—物理化学]