一步法制备丙烯氢甲酰化制丁醛铑膦络合催化剂研究

Preparation of rhodiumphosphine complex catalyst for propylene hydroformylation to butyraldehyde by one-step method

采用一步法制备铑膦络合催化剂,考察了反应温度、反应时间、铑膦比、还原剂用量、氢源用量等因素对催化剂制备过程铑利用率的影响。在优化的工艺条件下,铑利用率达99%以上。在适宜的评价条件下,丙烯转化率为97.1%,丁醛选择性为98.1%,产物醛正异构比15∶1以上。

Rhodiumphosphine complex catalyst is prepared by one-step method. The effects of reaction temperalure, reaction time,rhodium phosphine ratio, the amount of the reducing agent and hydrogen on the utilization of rhodium catalyst are studied. Under the optimal conditions, the utilization of rhodium can reach above 99%. The conversion of propylene and selectivity of butyraldehyde are 97. 1% and 98. 1% , respectively. The normal/isomeric ratio of aldehyde is more than 15： 1.