35901-19-0Relevant articles and documents
Copper-zinc alloy nanopowder: A robust precious-metal-free catalyst for the conversion of 5-hydroxymethylfurfural
Bottari, Giovanni,Kumalaputri, Angela J.,Krawczyk, Krzysztof K.,Feringa, Ben L.,Heeres, Hero J.,Barta, Katalin
, p. 1323 - 1327 (2015)
Noble-metal-free copper-zinc nanoalloy (2. It is also possible to convert 10 wt % HMF solutions in CPME, with an excellent DMF yield of 90 %. Milder temperatures favor selective (95 %) formation of 2,5-furandimethanol (FDM). The one-pot conversion of fructose to valuable furan-ethers was also explored. Recycling experiments for DMF production show remarkable catalyst stability. Transmission electron microscopy (TEM) characterization provides more insight into morphological changes of this intriguing class of materials during catalysis.
METAL CATALYST AND HYDROGEN GAS FREE APPROACHES FOR SELECTIVE REDUCTION OF ALDEHYDE TO METHYL GROUP OF DIFFERENT SUBSTITUTED FURANS
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Page/Page column 19-20, (2021/08/27)
The present invention relates to 5-methyl substituted furan compounds of general formula (I) and process for the preparation thereof: OR1R2 R3CH3(I) Particularly, the present invention relates to a metal catalyst and hydrogen gas free, atom-economy, highly selective and low-cost process for the preparation of methyl substituted furan compounds from different aldehyde substituted furan compounds.
Etherification of biomass-derived furanyl alcohols with aliphatic alcohols over silica-supported nickel phosphide catalysts: Effect of surplus P species on the acidity
Kim, Jinsung,Shin, Mi,Suh, Young-Woong
, (2020/08/05)
The acidity of nickel phosphide (Ni2P) catalysts plays a crucial role in producing a desired hydrodeoxygenation molecule from biomass-derived substrates; yet, it has never been explored in acid-catalyzed reactions. Herein, we demonstrated the activity of silica-supported Ni2P catalyst prepared with the nominal P/Ni ratio of 2 (Ni2P/SiO2-2P) in the etherification of furanyl alcohols (particularly, 5-(hydroxymethyl)furfural) with aliphatic alcohols including ethanol. By comparing the characteristics of Ni/SiO2, PxOy/SiO2, and Ni2P/SiO2-xP (x = 0.5 and 1), Ni2P/SiO2-2P was revealed to contain the Br?nsted and Lewis acid sites of which both contributed to the etherification reaction. Notably, the Br?nsted acidity was associated with the surplus P species added to produce the Ni2P phase. Consequently, supported Ni2P catalysts can work in acid-catalyzed reactions if an adequate ratio of Br?nsted to Lewis acid sites is provided by the amount of the surplus P species determined by adjusting the P/Ni ratio.
Biomass conversion to diesel via the etherification of furanyl alcohols catalyzed by Amberlyst-15
Sacia, Eric R.,Balakrishnan, Madhesan,Bell, Alexis T.
, p. 70 - 79 (2014/04/17)
The etherification of furanyl alcohols produced from biomass-derived glucose and fructose has been a growing area of research for production of alternative diesel additives. We have determined that the Bronsted acidic resin catalyst, Amberlyst-15, is highly active and selective for the etherification of furanyl alcohols by both ethanol and butanol. The mechanism and kinetics of this reaction were investigated using 5-methylfurfuryl alcohol (MFA) as a probe molecule. Etherification of MFA was found to be first order in both the concentrations of furanyl alcohol and the acid sites. The mechanism of MFA etherification also holds for the etherification of 2,5-bis(hydroxymethyl) furan (BHMF) and 5-(hydroxymethyl)furfural (HMF). In the case of HMF, we find that acetalization of HMF precedes etherification in alcohol solutions. The apparent activation energy of furanyl alcohol etherification in ethanol and butanol solutions ranged from 17.0 to 26.3 kcal/mol. Electron donation/withdrawal at the 2 or 5 position of the furan ring in addition to solvent polarity was found to have significant effects on the rate of furanyl alcohol etherification.
5-SUBSTITUTED 2-(ALKOXYMETHYL)FURANS
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Page/Page column 12-13, (2009/04/25)
The present invention concerns a method for the manufacture of a 5-substituted 2- (alkoxymethyl)furan (or a mixture of such furans) by reacting a starting material comprising at least a 5-substituted furfural with hydrogen in the presence of an alcohol and a catalyst system
