Abstract ZSM-5 zeolite with hollow structure has gained considerable attention due to their unique properties and great potential applications in catalysis field. In this study, hierarchical hollow ZSM-5 zeolite was synthesized via a facile one-pot hydrothermal process during which a few amount of polyvinylpyrrolidone (PVP) was added. The synthesized ZSM-5 zeolite catalysts were characterized by the XRD, BET-BJH, TEM, FE-SEM, EDS, ICP-AES, XPS and intrusion/extrusion mercury analysis. The results showed that such hierarchical hollow ZSM-5 zeolite as micro-reactor after the modification by Mn species displayed excellent activity with a conversion of 98.7% and an overall selectivity of 97.6% for mild oxidation of cyclohexane to cyclohexanol and cyclohexanone (KA oil) at 70 °C, making this type of catalyst a candidate for the production of industrial KA oil. Also, this approach is proved to be a desirable strategy for constructing hollow zeolite micro-ellipsoids by simple and cost-effective manner, thereby, providing a new avenue to be explored in catalysis field.

中文翻译：

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用于增强环己烷催化氧化的分级空心Mn-ZSM-5沸石的简便合成

摘要 中空结构的ZSM-5沸石因其独特的性能和在催化领域的巨大应用潜力而受到广泛关注。在本研究中，通过加入少量聚乙烯吡咯烷酮 (PVP) 的简便的一锅水热法合成了分级中空 ZSM-5 沸石。通过XRD、BET-BJH、TEM、FE-SEM、EDS、ICP-AES、XPS和压入/压出汞分析对合成的ZSM-5沸石催化剂进行了表征。结果表明，这种经Mn物种改性后的分级空心ZSM-5沸石作为微反应器表现出优异的活性，转化率为98.7%，环己烷温和氧化为环己醇和环己酮（KA油）的总选择性为97.6%在 70°C，使这种类型的催化剂成为生产工业 KA 油的候选者。此外，该方法被证明是通过简单且具有成本效益的方式构建空心沸石微椭球的理想策略，从而为催化领域提供了一条新的探索途径。