期刊
CHEMSUSCHEM
卷 5, 期 9, 页码 1826-1833出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201200031
关键词
biomass; heterogeneous catalysis; hydrogenolysis; ionic liquids; liquid fuel
资金
- University Grant Commission (UGC), India
- UGC, India
The one-pot conversion of lignocellulosic and algal biomass into a liquid fuel, 2,5-dimethylfuran (DMF), has been achieved by using a multicomponent catalytic system comprising [DMA]+[CH3SO3]- (DMA=N,N-dimethylacetamide), Ru/C, and formic acid. The synthesis of DMF from all substrates was carried out under mild reaction conditions. The reaction progressed via 5-hydroxyemthylfurfural (HMF) in the first step followed by hydrogenation and hydrogenolysis of HMF with the Ru/C catalyst and formic acid as a hydrogen source. This report discloses the effectiveness of the Ru/C catalyst for the first time for DMF synthesis from inexpensive and readily abundant biomass sources, which gives a maximum yield of 32?% DMF in 1 h. A reaction route involving 5-(formyloxymethyl)furfural (FMF) as an intermediate has been elucidated based on the 1H and 13C NMR spectroscopic data. Another promising biofuel, 5-ethoxymethylfurfural (EMF), was also synthesized with high selectivity from polymeric carbohydrate-rich biomass substrates by using a Bronsted acidic ionic liquid catalyst, that is [DMA]+[CH3SO3]-, by etherification of HMF in ethanol.
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