Issue 53, 2016

Phosphoric acid doped polybenzimidazole as an heterogeneous catalyst for selective and efficient dehydration of saccharides to 5-hydroxymethylfurfural

Abstract

5-Hydroxymethylfurfural (HMF) is considered as a valuable platform chemical for fuels and chemical intermediates. Tremendous efforts have been made on the development of catalysts for the dehydration of saccharides to HMF with high conversion and selectivity. Here we reported a new solid acid, phosphoric acid doped polybenzimidazole (PA–PBI), for the dehydration of fructose to HMF with high selectivity (∼94%) at high fructose concentration (50 wt%) in a water–methyl isobutyl ketone (MIBK) biphasic system. PA–PBI was directly obtained by the one-pot polycondensation reaction and was very stable under harsh reaction conditions due to the strong acid–base interaction between PA and imidazole in PBI. PA–PBI was recycled to catalyze the dehydration of fructose four times without the loss of activity and could also catalyze a variety of disaccharides and polysaccharides to produce HMF. The high selectivity and the ease of recycling make PA–PBI a superior catalyst for the dehydration of saccharides to HMF.

Graphical abstract: Phosphoric acid doped polybenzimidazole as an heterogeneous catalyst for selective and efficient dehydration of saccharides to 5-hydroxymethylfurfural

Supplementary files

Article information

Article type
Paper
Submitted
07 Jan 2016
Accepted
10 May 2016
First published
10 May 2016

RSC Adv., 2016,6, 47890-47896

Phosphoric acid doped polybenzimidazole as an heterogeneous catalyst for selective and efficient dehydration of saccharides to 5-hydroxymethylfurfural

M. Han, X. Liu, G. Huang, Y. Liu and S. Ji, RSC Adv., 2016, 6, 47890 DOI: 10.1039/C6RA00473C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements