Journal
CELLULOSE
Volume 25, Issue 4, Pages 2249-2257Publisher
SPRINGER
DOI: 10.1007/s10570-018-1717-3
Keywords
5-Hydroxymethylfurfural; Glucose; Cellulose; Ionic liquid
Funding
- New Energy and Industrial Technology Development Organization (NEDO), Japan
- Grants-in-Aid for Scientific Research [16H04958] Funding Source: KAKEN
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5-Hydroxymethylfurfural (5-HMF) from lignocellulosics has attracted attention as a platform chemical in chemical industry. In 5-HMF production processes, undesired degradation of 5-HMF by acid catalysts generally occurs, by which the 5-HMF yield is decreased along with formation of various types of by-products. In this study, we employed an acidic ionic liquid, 1-methylimidazolium hydrogen sulfate ([HMIM]HSO4), as a reaction medium for 5-HMF production and carried out in situ removal of 5-HMF from the reaction solution by on-line vacuum steam distillation. In our reaction system, 76.1% 5-HMF yield was achieved from d-glucose, which yield was very similar to that from d-fructose (77.3%). Various types of cellulose samples also gave 5-HMF with the yield up to 68.3% regardless of their molecular weights and crystallinities. The 5-HMF produced was recovered as an aqueous solution with substantial purity and almost no contamination with the ionic liquid.
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