Hollow structure nanoreactors take advantage of catalyst loading and enhanced activity by shell construction. In this work, functionalized poly(ionic liquid)s (PILs) with hollow spherical structures were synthesized by polymerization- and quaternization-based approaches. These hollow structure PILs (HPILs) could be controllable designed from IL monomer easily, giving HPILs various properties. In the subsequent selective oxidation of cyclohexane, the HPILs acting as nanoreactors could efficiently improve the activity of metal salt catalysts (CoCl₂) and displayed adjustable selectivity for cyclohexanone, cyclohexanol (KA) or adipic acid (AA) by different types of HPILs. In kinetic study, it follows first-order reaction kinetics which CoCl₂/HPIL-C12 had a lower the activation energy of 29.1 kJ/mol. Importantly, these nanoreactors storing the catalysts could be recovered and reused more than 7 times without significant loss of activity. A theoretical model for the hollow spherical reactor was further established to support the advance of the HPILs reactor, which could also help to predict reaction process in other core-shell catalytic system. Due to controlled substrate transfer and enhanced radical generation in HPILs, the reaction process could be adjusted to enhance the conversion of cyclohexane and selective oxidation to AA.

中空结构纳米反应器利用催化剂负载和壳结构增强的活性。在这项工作中，通过基于聚合和季铵化的方法合成了具有中空球形结构的功能化聚（离子液体）（PIL）。这些中空结构的 PILs (HPILs) 可以很容易地由 IL 单体进行可控设计，从而赋予 HPILs 各种特性。在随后的环己烷选择性氧化中，作为纳米反应器的HPILs可以有效地提高金属盐催化剂（CoCl₂）的活性，并且不同类型的HPILs对环己酮、环己醇（KA）或己二酸（AA）表现出可调节的选择性。_{在动力学研究中，它遵循CoCl 2}的一级反应动力学/HPIL-C12 的活化能较低，为 29.1 kJ/mol。重要的是，这些储存催化剂的纳米反应器可以回收和重复使用 7 次以上，而不会显着丧失活性。进一步建立了空心球形反应器的理论模型，以支持HPILs反应器的发展，这也有助于预测其他核壳催化体系中的反应过程。由于 HPIL 中受控的底物转移和增强的自由基生成，可以调整反应过程以增强环己烷的转化率和选择性氧化为 AA。