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Highly efficient conversion of microcrystalline cellulose to 5-hydroxymethyl furfural in a homogeneous reaction system

机译:在均相反应系统中将微晶纤维素高效转化为5-羟甲基糠醛

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摘要

The development of novel methods to obtain biofuels and chemicals from biomass has been an immediate issue in both academic and industrial communities. The present work introduces a new route to synthesize 5-hydroxymethyl furfural (5-HMF) in a one-vessel system through a tandem pathway involving decrystallization, depolymerization and conversion of microcrystalline cellulose (MCC) in a molten hydrate solution. A 71.62 wt% ZnCl2 aqueous solution was employed as the reaction media and methylisobutylketone (MIBK) as the extracting solvent in the reaction system. A yield of 80.6 mol% of 5-HMF was obtained at 150 degrees C with a HCl concentration of 0.2 mol L-1 in the solution for 40 min. The aqueous phase can be reused without significant loss of catalytic activity.
机译:从生物质中获得生物燃料和化学物质的新颖方法的开发一直是学术界和工业界的当务之急。本工作介绍了一种通过串联途径在单水合物体系中合成5-羟甲基糠醛(5-HMF)的新途径,该途径涉及在熔融水合物溶液中进行微晶纤维素(MCC)的解结晶,解聚和转化。在反应系统中,使用71.62 wt%的ZnCl2水溶液作为反应介质,使用甲基异丁基酮(MIBK)作为萃取溶剂。在150摄氏度,40分钟的溶液中HCl浓度为0.2 mol L-1的情况下,获得80.6 mol%的5-HMF。水相可以重复使用而不会显着降低催化活性。

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