Recovery and reuse of heteropolyacid catalyst in liquid reaction medium through reversible encapsulation in Cu3(BTC)2 metal–organic framework

Nikki Janssens; Lik H. Wee; Sneha Bajpe; Eric Breynaert; Christine E. A. Kirschhock; Johan A. Martens

doi:10.1039/C2SC01102F

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Recovery and reuse of heteropolyacid catalyst in liquid reaction medium through reversible encapsulation in Cu₃(BTC)₂ metal–organic framework†

Nikki Janssens,^a Lik H. Wee,^a Sneha Bajpe,^a Eric Breynaert,^a Christine E. A. Kirschhock^a and Johan A. Martens*^a

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* Corresponding authors

^a Center for Surface Chemistry and Catalysis, Department of Microbial and Molecular Systems, Katholieke Universiteit Leuven, Kasteelpark Arenberg 23, 3001 Heverlee, Belgium
E-mail: johan.martens@biw.kuleuven.be
Fax: (+32) 16.32.19.98
Tel: (+32) 16.32.16.10.

Abstract

The solvent dependent solubility of HKUST-1 metal–organic framework (MOF) with encapsulated Keggin 12-tungstophosphoric acid (HPW@Cu₃(BTC)₂) was exploited to liberate homogeneous heteropolyacid catalyst in a reaction medium and to recover the catalyst by encapsulation in the MOF upon addition of hexane. The application of the new Keggin type heteropolyacid catalyst recovery concept was demonstrated in the esterification of acetic acid with 1-propanol and salicylic acid with ethanol.

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Article information

DOI: https://doi.org/10.1039/C2SC01102F
Article type: Edge Article
Submitted: 22 Dec 2011
Accepted: 21 Mar 2012
First published: 19 Apr 2012

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Chem. Sci., 2012,3, 1847-1850

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Recovery and reuse of heteropolyacid catalyst in liquid reaction medium through reversible encapsulation in Cu₃(BTC)₂ metal–organic framework

N. Janssens, L. H. Wee, S. Bajpe, E. Breynaert, C. E. A. Kirschhock and J. A. Martens, Chem. Sci., 2012, 3, 1847 DOI: 10.1039/C2SC01102F

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