Efficient Glucose Isomerization to Fructose using Photoregenerable MgSnO3 Catalyst with Cooperative Acid-Base Sites

Peixin Wang, Wenhua Xue, Jian Ye, Ruilong Zhang, Reeti Kumar, Wenfei Cai, Jun Zhao*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

Abstract

The isomerization of glucose to fructose plays a crucial role in the food industry and the production biomass-derived chemicals in biorefineries. However, the catalyst used in this reaction suffers from low selectivity and catalyst deactivation due to carbon or by-product deposition. In this study, MgSnO3 catalyst, synthesized via a facile two-step process involving hydrothermal treatment and calcination, was used for glucose isomerization to fructose. The catalyst demonstrated outstanding catalytic performance, achieving a fructose equilibrium yield of 29.8% with a selectivity exceeding 90% under mild conditions owing to its acid-base interaction. Notably, spent catalysts can be regenerated by photoirradiation to remove surface carbon, thereby avoiding the changes in properties and subsequent loss of activity associated with conventional calcination regeneration method. This novel approach eliminates the energy consumption and potential structural aggregation associated with traditional calcination regeneration methods. The acid-base active sites of the catalyst, along with their corresponding catalytic reaction mechanism and photoregeneration mechanism were investigated. This study presents a demonstration of the comprehensive utilization of catalytic material properties, i.e., acid-base and photocatalytic functionalities, for the development of a green and sustainable biomass thermochemical conversion system.

Original languageEnglish
Article numbere202400637
Number of pages25
JournalChemSusChem
DOIs
Publication statusE-pub ahead of print - 15 May 2024

Scopus Subject Areas

  • Energy(all)
  • Chemical Engineering(all)
  • Materials Science(all)
  • Environmental Chemistry

User-Defined Keywords

  • catalyst regeneration
  • fructose
  • glucose
  • heterogeneous catalysis
  • isomerization
  • Heterogeneous catalysis

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