Rational design of a polyoxometalate intercalated layered double hydroxide: highly efficient catalytic epoxidation of allylic alcohols under mild and solvent-free conditions

Li, T., Wang, Z., Chen, W., Miras, H. N. and Song, Y.-F. (2017) Rational design of a polyoxometalate intercalated layered double hydroxide: highly efficient catalytic epoxidation of allylic alcohols under mild and solvent-free conditions. Chemistry: A European Journal, 23(5), pp. 1069-1077. (doi: 10.1002/chem.201604180) (PMID:27748545)

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Abstract

Intercalation catalysts, owing to their modular and accessible gallery and unique interlamellar chemical environment, have shown wide application in various catalytic reactions. However, the poor mass transfer between the active components of the intercalated catalysts and organic substrates is one of the challenges that limit their further application. Herein, we have developed a novel heterogeneous catalyst by intercalating the polyoxometalate (POM) of Na9LaW10O36⋅32 H2O (LaW10) into layered double hydroxides (LDHs), which have been covalently modified with ionic liquids (ILs). The intercalation catalyst demonstrates high activity and selectivity for the epoxidation of various allylic alcohols in the presence of H2O2. For example, trans-2-hexen-1-ol undergoes up to 96 % conversion and 99 % epoxide selectivity at 25 °C in 2.5 h. To the best of our knowledge, the Mg3Al−ILs−C8−LaW10 composite material constitutes one of the most efficient heterogeneous catalysts for the epoxidation of allylic alcohols (including the hydrophobic allylic alcohols with long alkyl chains) reported so far.

Item Type:Articles
Additional Information:This research was supported by the National Basic ResearchProgram of China (973 program, 2014CB932104), National Sci-ence Foundation of China (U1407127, U1507 102), FundamentalResearch Funds for the Central Universities (YS1406).
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Moiras, Professor Haralampos
Authors: Li, T., Wang, Z., Chen, W., Miras, H. N., and Song, Y.-F.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Chemistry: A European Journal
Publisher:Wiley
ISSN:0947-6539
ISSN (Online):1521-3765
Published Online:09 December 2016
Copyright Holders:Copyright © 2017 Wiley-VCH Verlag GmbH and Co.
First Published:First published in Chemistry: A European Journal 23(5): 1069-1077
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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