Functionalized metal–organic frameworks with strong acidity and hydrophobicity as an efficient catalyst for the production of 5-hydroxymethylfurfural

Huan Li, Yao Zhong, Luxi Wang, Qiang Deng, Jun Wang, Zheling Zeng, Xinxiang Cao, Shuguang Deng

Research output: Contribution to journalReview articlepeer-review

2 Scopus citations

Abstract

In the dehydration of fructose to 5-hydroxymethyl furfural (HMF), in situ produced water weakens the acid strength of the catalyst and causes the rehydration of HMF, causing unsatisfactory catalytic activity and selectivity. In this work, a class of benzenesulfonic acid-grafted metal–organic frameworks with strong acidity and hydrophobicity is obtained by the direct sulfonation method using 4-chlorobenzenesulfonic acid as sulfonating agent. The resultant MOFs have a specific surface area of greater than 250 m2·g−1, acid density above 1.0 mmol·g−1, and water contact angle up to 129°. The hydrophobic MOF-PhSO3H exhibits both higher catalytic activity and selectivity than MOF-SO3H in the HMF synthesis due to its better hydrophobicity and olephilicity. Moreover, the catalyst has a high recycled stability. At last, fructose is completely converted, and 98.0% yield of HMF is obtained under 120 °C in a DMSO solvent system. The successful preparation of the hydrophobic acidic MOF provides a novel hydrophobic catalyst for the synthesis of HMF.

Original languageEnglish (US)
JournalChinese Journal of Chemical Engineering
DOIs
StateAccepted/In press - 2021
Externally publishedYes

Keywords

  • 5-Hydroxymethylfurfural
  • Biomass
  • Catalysis
  • Catalyst
  • Fructose
  • Metal–organic framework

ASJC Scopus subject areas

  • Environmental Engineering
  • Biochemistry
  • Chemistry(all)
  • Chemical Engineering(all)

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