Chinese Journal of Catalysis ›› 2015, Vol. 36 ›› Issue (9): 1638-1646.DOI: 10.1016/S1872-2067(15)60927-5

• Articles • Previous Articles    

Tailored one-pot production of furan-based fuels from fructose in an ionic liquid biphasic solvent system

Changzhi Lia, Haile Caia, Bo Zhanga, Weizhen Lia, Guangxian Peia,b, Tao Daia,b, Aiqin Wanga,c, Tao Zhanga,c   

  1. a State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    b University of Chinese Academy of Sciences, Beijing 100049, China;
    c Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Dalian 116023, Liaoning, China
  • Received:2015-03-29 Revised:2015-06-03 Online:2015-08-28 Published:2015-09-26
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21473187, 21403213) and China Postdoctoral Science Foundation (2015M571341).

Abstract:

The one-pot catalytic transformation of biomass to useful products is desirable for saving cost and time. The integration of the various reaction steps need to address the presence of incompatible reaction conditions and numerous side reactions. We report a novel process for the one-pot production of furan-based fuels, 2,5-dimethylfuran (DMF) and 2,5-dihmethyltetrahydrofuran (DMTF), from fructose by optimizing the synergic effect of an ionic liquid promoted Ru/C catalyst and the solvent effect. The dehydration of fructose and subsequent in situ hydrodeoxygenation of HMF to DMF and DMTF on Ru/C were enhanced by the use of an ionic liquid and a biphasic [BMIm]Cl/THF solvent. Elemental analysis, X-ray Photoelectron Spectroscopy, Raman spectroscopy and H2-temperature programmed reduction-mass spectroscopy characterization showed that the ionic liquid modified the electronic density of the Ru species to favor HMF in situ hydrodeoxygenation. Moreover, THF served as a reaction-extraction solvent that extracted DMF and DMTF from the reaction layer to avoid further side reactions. A rational design that gave enhancement of the catalytic performance and product protection provides a promising strategy for the one-pot conversion of biomass to desired fuels.

Key words: Biomass, Ionic liquids, 2,5-Dimethylfuran, 2,5-Dimethyltetrahydrofuran, 5-Hydroxylmethylfufural, Fructose, Biofuel