利用原位红外光谱 ,考察了 PETPP/Rh催化剂在 CO/H2 气氛下的活化情况 ,并监测 1-十二碳烯氢甲酰化的反应过程 .实验结果表明 ,在 PETPP/Rh配合物催化剂中 ,膦配体主要以配位数少的形式存在 ,因而氢甲酰化反应产物醛的正 /异比较低 In-situ infrared spectroscopy was used to investigate the activation of PETPP / Rh catalyst under CO / H2 atmosphere and to monitor the reaction of 1-dodecene hydroformylation.The experimental results show that in the PETPP / Rh complex catalyst , The phosphine ligand is mainly in the form of a small number of coordination exists, so the hydroformylation reaction product of aldehydes positive / negative ratio is low