Energy efficient production of 5-hydroxymethylfurfural (5-HMF) over surface functionalized carbon superstructures under microwave irradiation

Xiaoqi Lyu, Hong Li, Huaizhong Xiang, Yibing Mu, Na Ji, Xuebin Lu, Xiaolei Fan, Xin Gao

Research output: Journal PublicationArticlepeer-review

12 Citations (Scopus)

Abstract

Microwave (MW)-assisted process intensification of catalytic conversion of saccharides is a promising route for energy efficient production of value-added chemicals and fuels. This work presents the development of the MW-responsive catalysts (i.e., the acid functionalized spherical carbon superstructure, SCS) for converting fructose to 5-HMF effectively and efficiently under MW irradiation. Under a mild MW condition (at 70 °C, atmospheric pressure), the SCS catalyst (with surface sulfonic and carboxylic acid groups) achieved fructose conversion of ~ 97.8% and selectivity to 5-HMF of ~ 90.6% after 5 min reaction time with good recyclability, being significantly higher than that obtained by the system under the conventional heating. Importantly, the MW-assisted system showed very high energy efficiency coefficient of 1.01 mmol kJ−1 L−1 compared to that (0.09 mmol kJ−1 L−1) of the conventional thermal catalysis. The mechanism of process intensification of the system developed may be attributed to the combination of the dipole polarization of the MW-responsive sulfonic groups and the selective heating of the MW-absorbing SCS support under the MW condition.

Original languageEnglish
Article number131143
JournalChemical Engineering Journal
Volume428
DOIs
Publication statusPublished - 15 Jan 2022
Externally publishedYes

Keywords

  • 5-Hydroxymethylfurfural (5-HMF)
  • Carbonaceous superstructure
  • Catalysis
  • Fructose dehydration
  • Microwave irradiation

ASJC Scopus subject areas

  • Chemistry (all)
  • Environmental Chemistry
  • Chemical Engineering (all)
  • Industrial and Manufacturing Engineering

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