Synergy of Lewis and Brønsted acids on catalytic hydrothermal decomposition of carbohydrates and corncob acid hydrolysis residues to 5-hydroxymethylfurfural

Chao Wang; Liming Zhang; Tian Zhou; Jiachuan Chen; Feng Xu

doi:10.1038/srep40908

Synergy of Lewis and Brønsted acids on catalytic hydrothermal decomposition of carbohydrates and corncob acid hydrolysis residues to 5-hydroxymethylfurfural

Sci Rep. 2017 Jan 13:7:40908. doi: 10.1038/srep40908.

Authors

Chao Wang¹, Liming Zhang¹, Tian Zhou¹, Jiachuan Chen², Feng Xu^{1

2}

Affiliations

¹ Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing, 100083, China.
² Shandong Key Laboratory of Pulping and Papermaking Engineering, Qilu University of Technology, Jinan, 250353, China.

Abstract

5-hydroxymethylfurfural (HMF) is an important platform molecule in the synthesis of various chemicals and materials. Herein, we reported a simple and effective dehydration of glucose-based carbohydrates to HMF in a biphasic system containing cyclopentyl methyl ether as the organic phase and AlCl₃ with minute amounts of HCl as co-catalysts. The results showed that the mixed catalysts had a positive synergistic catalytic effect on glucose conversion to HMF compared with single AlCl₃ or HCl catalyst. For glucose, the highest HMF yield of 54.5% was achieved at 175 °C for 20 min. More importantly, the optimal catalytic system was so efficient that it achieved one of the highest reported yields of HMF (30.5%) directly from corncob acid hydrolysis residues. Thus, the catalytic system can become a promising route for effective utilization of biomass in future biorefineries.

Publication types

Research Support, Non-U.S. Gov't