聚乙二醇-水反应介质中长链烯烃的氢甲酰化反应  

Higher Olefin Hydroformylation in Polyethylene Glycol-H_2O Media

作　　者：李诚[1] 付海燕[1] 张瑞敏[1] 刘雯静[1] 杨朝芬[1] 陈华[1] 李贤均[1] 

机构地区：[1]四川大学化学学院有机金属络合催化研究所,绿色化学与技术教育部重点实验室,四川成都610064

出　　处：《催化学报》2008年第9期895-900,共6页

基　　金：国家重大基础研究发展计划(973计划,G2000048008).

摘　　要：以聚乙二醇(PEG)为反应介质,考察了水溶性铑膦络合物RhCl(CO)(TPPTS)2(TPPTS为间-三苯基膦三磺酸钠)对长链烯烃氢甲酰化反应的催化性能.结果表明,添加适量的水于PEG中对催化剂活性有重要影响.以PEG-400-H2O为溶剂的催化体系对1-十二烯氢甲酰化反应的催化活性较高,在100℃,5.0 MPa的优化条件下,1-十二烯的转化率可达到92.6%,生成醛的选择性为95.8%.反应完成后,含水溶性铑膦络合物的PEG-水溶液与含产物的有机相分离方便,易于实现催化剂的循环使用,催化剂重复使用8次,未观察到活性和选择性下降.Abstract： 1-Dodecene hydroformylation catalyzed by a water-soluble rhodium complex, RhCI（CO）（TPPTS）2 （TPPTS= P（m-C6H4SO3Na）3）, using PEG （polyethylene glycol）-water as the solvent was investigated. The effects of various reaction parameters, such as reaction temperature, pressure, molar ratio of the phosphine lig- and to rhodium, volume ratio of PEG to water, molecular weight of PEG, and alkenes with different chain lengths, on the hydroformylation were studied. High activity and selectivity for the linear aldehyde were achieved under relatively mild conditions （100℃ , 5.0 MPa）. The conversion of 1-dodecene and the selectivity for aldehydes reached 92.6 % and 95.8 % , respectively The catalyst immobilized in PEG-water was easily separated from the aldehyde and olefin and can be efficiently recovered and reused eight times without a decrease in reactivity and regioselectivity.

关 键 词：长链烯烃 氢甲酰化 水溶性铑膦络合物 聚乙二醇 绿色反应介质 

分 类 号：O643.32[理学—物理化学]