Glucose dehydration to 5-hydroxymethylfurfural in ionic liquid over Cr3+-modified ion exchange resin

• Main Authors: Liu, Hui, Wang, Hongwei, Li, Yuan, Yang, Wei, Song, Changhua, Li, Huaming, Zhu, Wenshuai, Jiang, Wei
• Format: Article
• Language: English
• ISSN: 2046-2069
• DOI: 10.1039/c4ra09131k

In this work, D001-cc cation-exchange resin was modified by CrCl 3 using an ion exchange method to obtain a Cr 3+ -D001-cc catalyst. FT-IR, UV-vis, SEM, EDX, ICP-OES and Py-IR were used to characterize the catalyst. Subsequently, the effects of the modified metal ion and different cation-exchange resin on the direct conversion of glucose to 5-hydroxymethylfurfural in [Bmim]Cl were examined. The results showed that Cr 3+ -D001-cc resin exhibited excellent catalytic performance. Moreover, with Cr 3+ -D001-cc resin as a catalyst, the influence of the reaction conditions on the dehydration of glucose was investigated in detail. 61.3% yield of 5-hydroxymethylfurfural was achieved in the [Bmim]Cl ionic liquid at 110 °C for 30 min with 0.1 g catalyst. Finally, a recycling experiment was performed. The result indicated that the HMF yield in the Cr 3+ -D001-cc resin and [Bmim]Cl system significantly decreased after six recycles. Cr 3+ -D001-cc resin shows excellent catalytic performance for the dehydration of glucose to 5-hydromethylfurfural, which is prepared by a simple ion-exchange method.