有机膦配位催化剂结构与活性的关系 Ⅱ.配位体调变效应的加压原位红外光谱研究  

Ligand Effects on the Stability and Activity of Catalytic Active Species for Hydroformylation

作　　者：李达刚[1] 寇元[1] 刘树法[1] 马应权 

机构地区：[1]中国科学院兰州化学物理研究所

出　　处：《分子催化》1997年第3期180-184,共5页Journal of Molecular Catalysis(China)

摘　　要：应用加温加压原位红外光谱技术，考察了７种不同结构的有机膦配位体的电子授予能力、钴－膦羰基配合物的稳定性及其烯烃氢甲酰化催化活性等三者之间的关系．结果表明，配位体的电子授予能力强，则钴－膦羰基配合物的稳定性好，烯烃氢甲酰化活性亦高；反之亦然．对于烯烃氢甲酰化制脂肪醇的钴－膦催化剂，选择配位能力较强的三烷基膦类型的配位体较为适宜．The electronic effects of ligands on the stability of active species such as HCo(CO) 3L and hydroformylation activity of cobalt phosphine catalyst system were studied by the high pressure in situ IR spectroscopy. The experimental results indicate that the stability of the active species (HCo(CO) 3L) and the hydroformylation activity of the cobalt phosphine catalysts are increased with the increase of electron donor ability of the ligands.

关 键 词：膦配体 羰基配合物 催化剂活性 结构 催化 改性 

分 类 号：O643.31[理学—物理化学] O643.36[理学—化学]