Facile immobilization of a Lewis acid polyoxometalate onto layered double hydroxides for highly efficient N-oxidation of pyridine based derivatives and denitrogenation

Liu, K., Yao, Z., Miras, H. N. and Song, Y.-F. (2015) Facile immobilization of a Lewis acid polyoxometalate onto layered double hydroxides for highly efficient N-oxidation of pyridine based derivatives and denitrogenation. ChemCatChem, 7(23), pp. 3903-3910. (doi: 10.1002/cctc.201500594)

Abstract

N-Oxides are a class of highly important compounds which are widely used as synthetic intermediates. In this paper, we demonstrate for the first time the use of a polyoxometalate (POM) based composite material, as highly efficient heterogeneous catalyst for the N-oxidation of pyridines and its derivatives in the presence of H2O2 at room temperature. The composite was prepared by intercalation of the [La(PW11O39)2]11- anion into a tris(hydroxymethyl)aminomethane (Tris) modified layered double hydroxides (LDHs). Additionally, the Tris-LDH-La(PW11)2–based catalyst has been employed for the denitrogenation of a model oil mixture in the presence of [bmim]BF4 and H2O2. Deep denitrogenation can be achieved in 40 minutes at 75 °C. Finally, the heterogeneous catalyst can be easily recovered and reused at least ten times without measurable decrease of the catalytic activity and disintegration of the Tris-LDH-La(PW11)2 structure.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Moiras, Professor Haralampos and Song, Dr Yufei
• Authors: Liu, K., Yao, Z., 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: 28 September 2015
• Copyright Holders: Copyright © 2015 Wiley-VCH Verlag GmbH and Co. KGaA
• First Published: First published in ChemCatChem 7(23):3903-3910
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher.