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Published in: Cellulose 2/2023

01-12-2022 | Original Research

Cellulose dissolution and conversion into 5-hydroxymethylfurfural in mixed molten salt hydrate

Authors: Chunjie Wei, Gang Liu, Yujiao Xie, Zhongyuan Sun, Chang Liu, Feng Song, Hongyou Cui

Published in: Cellulose | Issue 2/2023

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Abstract

Molten salt hydrate (MSH) is a good solvent for cellulose dissolution and an effective catalyst for cellulose conversion. In this work, a series of MSH was evaluated in terms of cellulose dissolvability, regeneration performance, and catalytic activity in cellulose conversion into 5-hydroxymethylfurfural (HMF). ZnBr2·3H2O–LiCl·3H2O showed good performance on cellulose dissolution and conversion. The effects of ZnBr2·3H2O concentration, reaction temperature, and time on cellulose conversion into HMF in ZnBr2·3H2O–LiCl·3H2O were optimized, and 48.7% HMF yield was reached at 60 wt.% ZnBr2·3H2O. The species of ZnBr2·3H2O–LiCl·3H2O were analyzed, and the function of species concentration was correlated with the product yield from the conversion of fructose. It was found that Br and H+ were the active species for fructose dehydration into HMF. ZnBr3 and H+ catalyzed the conversion of fructose into furfural, which competed with the production of HMF. The reaction mechanism was proposed to understand the cooperate of species in MSH for cellulose conversion.

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Appendix
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Literature
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Metadata
Title
Cellulose dissolution and conversion into 5-hydroxymethylfurfural in mixed molten salt hydrate
Authors
Chunjie Wei
Gang Liu
Yujiao Xie
Zhongyuan Sun
Chang Liu
Feng Song
Hongyou Cui
Publication date
01-12-2022
Publisher
Springer Netherlands
Published in
Cellulose / Issue 2/2023
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-022-04967-y

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