Aerobic oxidation of alkylaromatic hydrocarbons to hydroperoxides catalysed by N-hydroxyimides in ionic liquids as solvents

作者：Dobras Gabriela; Orlinska Beata^*

来源：Applied Catalysis A: General , 2018, 561: 59-67.

DOI：10.1016/j.apcata.2018.05.012

• Oxidation
• N-Hydroxyphthalimide
• Ionic liquids
• Cumene
• Isopropylaromatics

This paper reports studies on the oxidation of alkylaromatic hydrocarbons to hydroperoxides with oxygen in the presence of N-hydroxyimides (N-hydroxyphthalimide, N-hydroxysuccinimide, 4-dodecyloxycarbonyl-N-hydroxyphthalimide, N,N-dihydroxypyromellitimide, N-acetoxyphthalimide) in ionic liquids as solvents. Cumene, ethylbenzene, mono- and di-isopropyl derivatives of naphthalene and biphenyl were used as starting materials. As solvents, ionic liquids composed of 1-alkyl-3-methylimidazolium cations with ethyl, butyl, hexyl or octyl substituents and anions such as [BF4], [PF6], [NTf2], [CF3SO3], [OcOSO(3)], and [CH3OSO3] were applied. It has been established that organic solvents could be replaced by ionic liquids, which does not accelerate hydroperoxide decomposition and is characterized by relatively high oxygen and catalyst solubility and low viscosity. Among studied ILs, these with [NTf2] and [PF6] anions meet the above requirements.

• 出版日期2018-7-5