摘要
用合成的4种钴次卟啉衍生物作催化剂,在未加入辅助还原剂和其他溶剂的条件下催化空气氧化环己烷。反应温度150℃,釜压0.80 MPa,n(催化剂)∶n(底物)≈1∶4.63×105时,钴次卟啉衍生物表现出良好的催化性能。4种钴次卟啉衍生物催化的底物转化率在4 h内都达到了14%以上,目标产物环己酮和环己醇的选择性(简称酮醇选择性)在82%以上。其中,钴3,8-二硝基次卟啉二甲酯催化活性最好:环己烷转化率在3.5 h升至19.34%,环己烷氧化目标产物酮醇的选择性为82.30%,催化剂转化数达8.86×104。
Four cobalt-deuteroporphyrins derivatives were synthesized and used as catalysts for the cyclohexane oxidation with air in the absence of additives and solvents.The four kinds of cobalt-deuteroporphyrins derivatives show good catalytic performance when reaction temperature was 150 ℃,n（catalyst）∶n（substrate）≈1∶4.63×105 and reaction pressure was 0.80 MPa.The substrate′s conversion rate within 4 h had reached more than 14% and the target product alcohol and ketone were formed over 82% selectivity.The catalytic activity of cobalt-3,8-dinitro deuteroporphyrin dimethyl ester was superior to the other three kinds of metallo-deuteroporphyrins derivatives.Under the optimum conditions,the alcohol and ketone were formed to 82.30% selectivity at the cyclohexane conversion of 19.34%,when reaction time was 3.5 h,and turnover number reached 8.86×104.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2010年第5期442-446,462,共6页
Fine Chemicals
基金
江苏省自然科学基金资助项目(BK2009386)
南京理工大学科技发展基金资助项目(XKF09008)~~
关键词
钴次卟啉衍生物
环己烷
催化氧化
空气
cobalt-deuteroporphyrins derivatives
cyclohexane
catalytic oxidation
air
