In situ NMR spectroscopy: inulin biomass conversion in ZnCl₂ molten salt hydrate medium-SnCl₄ addition controls product distribution.

The dehydration of inulin biomass to the platform chemicals, 5-hydroxymethylfurfural (5-HMF) and levulinic acid (LA), in ZnCl2 molten salt hydrate medium was investigated. The influence of the Lewis acid catalyst, SnCl4, on the product distribution was examined. An in situ(1)H NMR technique was employed to follow the reaction at the molecular level. The experimental results revealed that only 5-HMF was obtained from degradation of inulin biomass in ZnCl2 molten salt hydrate medium, while the LA was gradually becoming the main product when the reaction temperature was increased in the presence of the Lewis acid catalyst SnCl4. In situ NMR spectroscopy could monitor the reaction and give valuable insight.
AuthorsYingxiong Wang, Christian Marcus Pedersen, Yan Qiao, Tiansheng Deng, Jing Shi, Xianglin Hou
JournalCarbohydrate polymers (Carbohydr Polym) Vol. 115 Pg. 439-43 (Jan 22 2015) ISSN: 1879-1344 [Electronic] England
PMID25439916 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
CopyrightCopyright © 2014 Elsevier Ltd. All rights reserved.
Chemical References
  • Chlorides
  • Levulinic Acids
  • Salts
  • Tin Compounds
  • Zinc Compounds
  • levulinic acid
  • Sucrose
  • stannic chloride
  • 5-hydroxymethylfurfural
  • zinc chloride
  • Inulin
  • Furaldehyde
  • Biomass
  • Catalysis
  • Chlorides (chemistry)
  • Furaldehyde (analogs & derivatives, chemistry)
  • Inulin (chemistry)
  • Levulinic Acids (chemistry)
  • Magnetic Resonance Spectroscopy
  • Salts (chemistry)
  • Sucrose (chemistry)
  • Temperature
  • Tin Compounds (chemistry)
  • Zinc Compounds (chemistry)

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