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Enhanced Catalytic Aryl Alkene Oxidation by Constructing Hierarchical Polyoxometalate-Based Metal-Organic Framework |
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| Authors: | Yue Jiang Yan Liang Dr Mingxia Zhang Zhong Zhang Prof Dr Yiwei Liu |
| Institution: | 1. School of Chemistry, Dalian University of Technology, 116024 Dalian, P. R. China
These authors contributed equally to this work.;2. School of Chemistry, Dalian University of Technology, 116024 Dalian, P. R. China |
| Abstract: | 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. |
| Keywords: | aryl alkene oxidation fractals heterogeneous catalysis hierarchical structures polyoxometalates |