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Catalytic conversion of carbohydrates into 5‐hydroxymethylfurfural by Hafnium(IV) chloride in ionic liquids
Author(s) -
Zhang Zehui,
Liu Bing,
Zhao Zongbao K.
Publication year - 2012
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.201200019
Subject(s) - cellobiose , ionic liquid , chemistry , catalysis , yield (engineering) , cellulose , fructose , organic chemistry , chloride , 5 hydroxymethylfurfural , chemical engineering , materials science , engineering , metallurgy , cellulase
Conversion of carbohydrates into HMF in ionic liquids (ILs) catalyzed by HfCl 4 has been investigated in search of an efficient and environment‐friendly process. The structure of ILs, catalyst loading, and reaction temperature had remarkable effects on this new catalytic system. Under optimal conditions, HMF yield up to 77.5% was obtained from fructose in 30 min at 100°C. Moderate yields of HMF were also obtained from aldohexose such as glucose, cellobiose, even cellulose. Furthermore, a possible mechanism for carbohydrates conversion into HMF catalyzed by HfCl 4 was proposed according to the configuration of valence shell of Hf. This work provides a meaningful method for the conversion of carbohydrates into fine chemicals.