【作者】 陈一霞； 佘远斌； 李艳；

【Author】 CHEN Yi-Xia SHE Yuan-Bin LI Yan (Institute of Green Chemistry, Beijing University of Technology, Beijing 100022, P. R. China)

【机构】 北京工业大学环能学院绿色化学与药物合成研究所；

【摘要】 采用仿生催化剂氯化锰卟啉催化氧气氧化环己烷一步合成己二酸。考察了反应温度、氧气压力、催化剂用量、反应时间等因素对反应的影响,发现上述因素对反应均有显著影响,且都有一个最佳的值。催化剂氯化锰卟啉在该反应中有良好的催化活性, 且活性转化数很高。优选的反应条件是:反应温度为150℃,氧气压力为2．5 MPA,催化剂用量为2×10-3MG／L,反应时间为4H。在此条件下,所获得的催化剂的活性转化数为 2．4×106,环己烷转化率可达51．0％,己二酸选择性为26．9％,最高收率达13．7％。更多还原

【Abstract】 One-pot oxidation of cyclohexane to adipic acid (AA) with molecular oxygen catalyzed by weso-tetra (o-chlorophenyl) manganese porphyrin (T(o-Cl)PPMnCl) under different conditions such as reaction temperature, oxygen pressure, catalyst amount and reaction time were investigated, all parameters revealed to significantly influence on the reaction and had optimal values; the increasing or decreasing of investigated parameters lead to a efficient generation of AA. T(o-Cl)PPMnCl was proved to be an excellent catalyst towards one-pot oxidation from cyclohexane to AA favoring high turnover number (TON) . Under the optimal reaction conditions like 150 ℃ of reaction temperature, 2.5 MPa of reaction pressure, 2 × 10-3mg/l of catalyst concentration and 4 h of reaction time, the TON , conversion of cyclohexane, selectivity of AA and the highest yield of AA were 2.4 ×106, 51.0%, 26.9% and 13.7%, respectively.更多还原