874-66-8Relevant articles and documents
Fe/FeOx embedded in LDH catalyzing C-C bond forming reactions of furfural with alcohols in the absence of a homogeneous base
Wang, Lijun,Zhong, Yang,Zhou, Bo
, (2020/07/02)
Fe/FeOx embedded in LDH was prepared by reducing the pre-synthesized [Fe(C2O4)3]3? anions intercalated LDH and used as a multi-functional catalyst for synthesis of C7-C9 compound via transfer hydrogenation between furfural (C5) and short-chain alcohols (C2-C4) and a subsequent aldol reaction of furfural with intermediate short-chain aldehydes in the absence of a homogeneous base with furfuryl alcohol as a byproduct. Screening reaction conditions, evaluation and improvement of the cyclic catalytic performance, and determination of catalytically active components were performed, and the results demonstrated that both high conversion and high selectivity to the C[sbnd]C bond forming product can be obtained under a non-oxidizing atmosphere of Ar or H2/Ar mixed gas, a reaction temperature of 140 °C and a reaction time of 4 h; the catalyst was easily deactivated during the cycle experiments, however, its catalytic stability can be effectively improved by depositing Ni with weak reducibility on the surface of Fe nanoparticles at the cost of reducing partial catalytic activity. Fe/FeOx together with LDH as a whole proved to be effective in catalyzing the transfer hydrogenation reaction and the support LDH imparted basic catalytic function to the composite realizing the aldol reaction in the absence of a homogeneous base.
A method for utilizing high-efficiency catalytic oxidation of furfural and fatty alcohol preparation furan for fluoro method
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Paragraph 0020; 0021; 0023; 0025; 0027, (2018/04/20)
The invention discloses a method for preparing furyl aldehyde by using efficient catalytic oxidation of furfural and fatty alcohol. Furyl aldehyde is prepared from furfural as a substrate and supported nano gold as a catalyst. The method comprises the following specific steps: dissolving furfural into an organic solvent, adding to the supported nano gold and an assistant, and reacting at 25-170 DEG C for 1-15 hours in a 0.01-05MPa oxygen atmosphere under the condition that the stirring speed is 100-5,000r/min; and carrying out selective catalytic oxidation on furfural and fatty alcohol through the supported nano gold, so as to prepare furyl aldehyde. The preparation method is simple and easy to operate, generates few by-products and is friendly to environment. A supported nano gold catalyst is adopted, is mild in condition, good in catalysis effect, easy to recover, and can be repeatedly used; the supported nano gold catalyst can be used for efficiently catalyzing oxidation of furfural with high selectivity to generate furyl aldehyde; and the product is easy to separate, the production cost is low, and technical and economic effects are remarkable, and therefore the method has a good application prospect.
Efficient and selective transformation of biomass-derived furfural with aliphatic alcohols catalyzed by a binary Cu-Ce oxide
Tong, Xinli,Yu, Linhao,Luo, Xuan,Zhuang, Xuli,Liao, Shengyun,Xue, Song
, p. 175 - 180 (2017/09/30)
The efficient transformation of furfural (FUR) with aliphatic alcohols to achieve the carbon-chain growth has been developed using a binary Cu-Ce oxide as the catalyst. In the presence of molecular oxygen, the tandem oxidative condensation of FUR with n-propanol is successfully performed, in which an 85.4% conversion of FUR in 95.3% selectivity of 3-(furan-2-yl-)-2-methylacryaldehyde was obtained. The effects of different Cu/Ce ratios and base additives were investigated in detail. As a result, it is found that the CuO-CeO2 (1: 9) catalyst is optimal and potassium carbonate is a suitable additive. Next, the recycling of CuO-CeO2 catalyst was tested and there is no obvious activity loss after being reused five times. Moreover, the oxidative condensation of FUR with various aliphatic alcohols including ethanol, isopropanol, n-butanol and n-hexanol was studied where the long chain alcoholic molecule hinders the proceeding of reaction. Finally, based on the experimental results and reaction phenomena, a possible mechanism for the oxidative condensation of FUR with n-propanol-O2 is proposed.
