1917-66-4Relevant academic research and scientific papers
A fructose-based biomass catalytic conversion systems furan derivatives
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Paragraph 0020, (2017/02/09)
A method for preparing furan derivatives by catalytic conversion of fructose-based biomass is characterized by: taking biomass such as fructose, cane sugar, inulin and the like as raw materials, taking low-boiling-point alcohols comprising aliphatic alcohols or alicyclic alcohols all with six or less than six carbon atoms as a solvent, and under the effect of a catalyst, performing reactions comprising hydrolysis, dehydration, etherfication and the like for coupling so as to obtain furan derivatives such as 5-alkoxymethyl furfural, levulinate esters, 5-hydroxymethylfurfural and the like. The method has the advantages of high raw material utilization rate, high in-situ coupling efficiency in the dehydration and etherfication reactions, and easily separated and purified system.
Heterogeneous acidic TiO2 nanoparticles for efficient conversion of biomass derived carbohydrates
Kuo, Chung-Hao,Poyraz, Altug S.,Jin, Lei,Meng, Yongtao,Pahalagedara, Lakshitha,Chen, Sheng-Yu,Kriz, David A.,Guild, Curtis,Gudz, Anton,Suib, Steven L.
, p. 785 - 791 (2014/02/14)
Selective conversion of biomass derived carbohydrates into fine chemicals is of great significance for the replacement of petroleum feedstocks and the reduction of environmental impacts. Levulinic acid, 5-hydroxymethyl furfural (HMF) and their derivatives are recognized as important precursor candidates in a variety of different areas. In this study, the synthesis, characterization, and catalytic activity of acidic TiO2 nanoparticles in the conversion of biomass derived carbohydrates were explored. This catalyst was found to be highly effective for selective conversion to value-added products. The nanoparticles exhibited superior activity and selectivity towards methyl levulinate from fructose in comparison to current commercial catalysts. The conversion of fructose to methyl levulinate was achieved with 80% yield and high selectivity (up to 80%). Additionally, conversions of disaccharides and polysaccharides were studied. Further, the production of versatile valuable products such as levulinic esters, HMF, and HMF-derived ethers was demonstrated using the TiO2 nano-sized catalysts in different solvent systems.
Conversion of fructose into 5-hydroxymethylfurfural and alkyl levulinates catalyzed by sulfonic acid-functionalized carbon materials
Liu, Ruliang,Chen, Jinzhu,Huang, Xing,Chen, Limin,Ma, Longlong,Li, Xinjun
supporting information, p. 2895 - 2903 (2013/10/08)
A series of sulfonic acid-functionalized carbon materials (C-SO 3H), including poly(p-styrenesulfonic acid)-grafted carbon nanotubes (CNT-PSSA), poly(p-styrenesulfonic acid)-grafted carbon nanofibers (CNF-PSSA), benzenesulfonic acid-grafted CMK-5 (CMK-5-BSA), and benzenesulfonic acid-grafted carbon nanotubes (CNT-BSA), have been studied for fructose dehydration to 5-hydroxymethylfurfural (HMF) and fructose alcoholysis to alkyl levulinate. A study for optimizing the reaction conditions such as the catalyst loading, the reaction time, and the temperature has been performed. Under the optimal conditions, high HMF and ethyl levulinate yields of up to 89% and 86%, respectively, are obtained. The catalytic activities of C-SO3H for the conversions of fructose into both HMF and ethyl levulinate follow the order of their acid strength. The relationship between the catalytic activity and acid density of C-SO3H shows a linear correspondence in the fructose dehydration to HMF. The facile separation, ease of recovery, and high thermal stability make the developed C-SO3H efficient and environment-friendly catalytic materials for transforming biomass carbohydrate into fine chemicals.
METHOD OF PRODUCING 5-HYDROXYMETHYLFURFURAL FROM CARBOHYDRATES
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Page/Page column 33, (2013/04/10)
Disclosed herein is a process for preparing 5-hydroxymethylfurfural comprising the step of contacting a carbohydrate and a Br?nsted acid in an alcoholic solvent comprising an alcohol selected from the group consisting of secondary alcohols, tertiary alcohols, aryl alcohols and combinations thereof under conditions to dehydrate the carbohydrate thereby forming a reaction product containing 5-hydroxymethylfurfural.
The production of 5-hydroxymethylfurfural from fructose in isopropyl alcohol: A green and efficient system
Lai, Linke,Zhang, Yugen
experimental part, p. 1745 - 1748 (2012/03/27)
Solving problems: An isopropyl alcohol-mediated reaction system for the production of 5-hydroxymethylfurfural (HMF) from fructose reaches a yield of up to 87 %. The solvent can be easily recycled by evaporation, giving the HMF product. The system avoids the use of large amounts of organic solvent, has a minimal environmental impact, and offers a new route to large-scale economically viable processes.
