New insights for the catalytic oxidation of cyclohexane to K-A oil  

作　　者：Alessandro Vomeri Marta Stucchi Alberto Villa Claudio Evangelisti rea Beck Laura Prati 

机构地区：[1]Dipartimento di Chimica,Universitàdegli Studi di Milano,Via Golgi 19,20133,Milano,Italy [2]CNR-ICCOM-Istituto di Chimica dei Composti Organo Metallici,Via G.Moruzzi 1,I-56124 Pisa,Italy [3]Centre for Energy Research,Surface Chemistry and Catalysis Department,P.O.Box 49,H-1525 Budapest,Hungary

出　　处：《Journal of Energy Chemistry》2022年第7期45-51,I0002,共8页能源化学（英文版）

基　　金：The Authors gratefully acknowledge the supportof bilateral project CNR-HAS(MTA)SAC.AD002.037.

摘　　要：Au-based catalysts have been reported to be active in the cyclohexane oxidation to K-A oil, but they showed some limitiations in terms of productivity, selectivity and required reaction conditions. The possibility to overcome some of these limits has been explored coupling Au with Cu, which can be suitable for undergoing the electron-switch in the initial step of the cyclohexane oxidation. Hence, a bimetallic 2 wt% Au Cu/Al_(2)O_(3) catalyst was tested in the oxidation of cyclohexane, working at mild conditions of 120 ℃ and 4 bar of O_(2). The combination of the catalyst with a very small amount of benzaldehyde used as cheaper and non-toxic radical initiator allowed to obtain a very high productivity of cyclohexanol and cyclohexanone(45 mmol*m L/mgmet*h) with a selectivity of 94%. Moreover, comparing the catalysed reaction with the non-catalysed one, the role of the catalyst has been disclosed.

关 键 词：K-A oil Cyclohexane oxidation BENZALDEHYDE Radical initiator Heterogeneous catalysis Radical mechanism AuCu bimetallic catalyst 

分 类 号：TQ234.21[化学工程—有机化工] TQ426