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New insights for the catalytic oxidation of cyclohexane to K-A oil 被引量:5
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作者 alessandro vomeri Marta Stucchi +3 位作者 Alberto Villa Claudio Evangelisti rea Beck Laura Prati 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2022年第7期45-51,I0002,共8页
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 ... 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. 展开更多
关键词 K-A oil Cyclohexane oxidation BENZALDEHYDE Radical initiator Heterogeneous catalysis Radical mechanism AuCu bimetallic catalyst
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