Modular polyoxometalate-layered double hydroxides as efficient heterogeneous sulfoxidation and epoxidation catalysts

Li, T., Zhang, W., Chen, W., Miras, H. N. and Song, Y.-F. (2018) Modular polyoxometalate-layered double hydroxides as efficient heterogeneous sulfoxidation and epoxidation catalysts. ChemCatChem, 10(1), pp. 188-197. (doi: 10.1002/cctc.201701056)

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Abstract

Selective sulfoxidation of sulfides and epoxidation of olefins are two types of important organic reactions and the corresponding products of sulfoxides, sulfones and epoxides are widely used as raw materials in industrial processes. The fabrication of one efficient catalyst for both reactions, remains a challenging task. In this paper, we report the preparation of a highly efficient heterogeneous catalyst of Mg3Al-ILs-La(PW11)2 using an exfoliation/assembly approach. The catalyst was characterized by FT-IR, XRD, TG/DTA, BET, XPS, 29Si CP/MAS NMR, the 27Al-MAS NMR, SEM, HRTEM, EDX etc. The designed catalyst showed high efficiency and selectivity for sulfoxidation of sulphides and epoxidation of olefins under mild conditions at a production rate of 208 mmol g-1 h-1 and 31 mmol g-1 h-1, respectively. Moreover, the Mg3Al-ILs-La(PW11)2 can be recycled and reused at least 5 times without obvious decrease of its catalytic activity. The scaled-up experiments revealed that the catalyst retained its efficiency and robustness, demonstrating the catalyts' great potential for industrial applications.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Moiras, Professor Haralampos
Authors: Li, T., Zhang, W., Chen, W., Miras, H. N., and Song, Y.-F.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:ChemCatChem
Publisher:Wiley
ISSN:1867-3880
ISSN (Online):1867-3899
Published Online:03 August 2017
Copyright Holders:Copyright © 2017 Wiley-VCH Verlag GmbH & Co.
First Published:First published in ChemCatChem 10(1): 188-197
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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