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Issue 22, 2016
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H5PMo10V2O40 immobilized on functionalized chloromethylated polystyrene by electrostatic interactions: a highly efficient and recyclable heterogeneous catalyst for hydroxylation of benzene

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Abstract

H5PMo10V2O40 (PMoV2) was immobilized on N,N-dimethylhexadecylamine functionalized chloromethylated polystyrene (DMA16-CMPS) by electrostatic interaction and used as a catalyst for the direct hydroxylation of benzene to phenol with H2O2. The results of FT-IR, XRD and TGA indicated that PMoV2 was immobilized and finely dispersed on DMA16-CMPS, and the structure was well preserved. UV-vis DRS, EPR and XPS confirmed the presence of V4+ in the catalyst due to electronic interactions between PMoV2 and DMA16-CMPS. The textural and morphological properties of the catalyst were characterized by N2 adsorption–desorption, SEM and TEM. The hydrophobicity of the catalyst was also characterized by contact angle measurement. PMoV2/DMA16-CMPS exhibited excellent catalytic performance with 22.1% conversion of benzene and a phenol yield of 21.9% at 65 °C. The high catalytic performance of PMoV2/DMA16-CMPS is attributed to high dispersion of PMoV2 on mesoporous and macroporous DMA16-CMPS, good benzene adsorption and phenol desorption ability, and V5+/V4+ redox pairs in the catalyst. Meanwhile, PMoV2/DMA16-CMPS has the advantages of facile recovery and recycling.

Graphical abstract: H5PMo10V2O40 immobilized on functionalized chloromethylated polystyrene by electrostatic interactions: a highly efficient and recyclable heterogeneous catalyst for hydroxylation of benzene

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Publication details

The article was received on 11 Jun 2016, accepted on 05 Sep 2016 and first published on 06 Sep 2016


Article type: Paper
DOI: 10.1039/C6CY01270A
Citation: Catal. Sci. Technol., 2016,6, 8005-8015
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    H5PMo10V2O40 immobilized on functionalized chloromethylated polystyrene by electrostatic interactions: a highly efficient and recyclable heterogeneous catalyst for hydroxylation of benzene

    H. Wang, L. Fang, Y. Yang, L. Zhang and Y. Wang, Catal. Sci. Technol., 2016, 6, 8005
    DOI: 10.1039/C6CY01270A

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