摘要
首次将温控相分离催化概念应用于三聚丙烯氢甲酰化反应中 .系统研究了各种反应条件对三聚丙烯氢甲酰化反应的影响 ,考察了催化剂的循环使用效果 .以RhCl3 ·3H2 O为催化剂前体 ,以P[p C6H4 O(CH2 CH2 O) nH]3 为配体 ,在V(H2 ) /V(CO) =1,p =6MPa,θ=130℃的反应条件下 ,三聚丙烯氢甲酰化反应的转化率和醛收率可分别达到 76 3%和 72 1%.催化剂循环使用三次 ,仍有较高的催化活性 .
Based on the critical solution temperature (CST) of non-ionic phosphine ligand, a thermoregulated phase-separable catalyst formed in-situ from P[P-C6H4O(CH2CH2O)(n)H](3) (PETPP) and RhCl3.3H(2)O were applied for the first time in hydroformylation of tripropene (TP). This catalytic system was characterized with the advantage of one-phase catalysis and easy separation of the catalysts from the product mixture. The effects of reaction temperature, reaction pressure, molar ratio of PETPP to rhodium, different N of PETPP and recycling efficiency of catalyst on the hydroformylation of tripropene were investigated. Under the reaction conditions of V(H-2)/V(CO) = 1, n(TP)/n(Rh) = 1 000, n(P)/n(Rh) = 10, V (TP) = 1.0 ml, V(PhCH3) = 2.0 ml, V(C10H22) = 0.2 ml, N = 18, p = 6.0 MPa, theta = 130 degreesC and t = 10 h, the conversion of tripropene and the yield of aldehyde reached up to 76.3% and 72.1% respectively. After the reaction, the catalyst precipitated quantitatively at room temperature, hence the catalyst could be easily separated from the product mixture by simple decantation and applied in the consecutive reaction runs. The catalyst can be reused for three times with high activity.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2002年第4期388-390,共3页
基金
国家自然科学基金 ( 2 990 6 0 0 1)
中国石油化工股份有限公司石油化工科学研究院资助课题
关键词
温控相分离催化
铑
非离子表面活性膦配体
三聚丙烯
氢甲酰化反应
thermoregulated phase-separable catalysis
rhodium
non-ionic tensioactive phosphine ligand
tripropene
hydroformylation
