Enhanced Catalytic Aryl Alkene Oxidation by Constructing Hierarchical Polyoxometalate-Based Metal-Organic Framework

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY(2023)

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摘要
Achieving highly selective oxidation of aryl alkenes to aldehydes is of great significance in chemical industry. Herein, the performance of catalytic aryl alkene oxidation is enhanced via constructing a hierarchical fractal polyoxometalate-based metal-organic framework (POM@MOF) containing hierarchical pores and layered surface structure, which improve the mass transfer efficiency of substrates and increase the accessibility to active POMs clusters. Accordingly, the activity of fractal POM@MOF is increased by 4.8 times compared with microporous counterpart in 4-tert-butylstyrene oxidation to aldehyde product. This work paves a way for designing efficient catalysts for selective oxidation of aryl alkenes via increasing the accessibility of active sites and broadening the diffusion channels by hierarchical construction.
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关键词
aryl alkene oxidation, fractals, heterogeneous catalysis, hierarchical structures, polyoxometalates
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