90200-14-9Relevant articles and documents
Bimetallic CuFe nanoparticles as active and stable catalysts for chemoselective hydrogenation of biomass-derived platform molecules
Arias, Karen S.,Climent, Maria J.,Concepcion, Patricia,Corma, Avelino,Garcia-Ortiz, Andrea,Iborra, Sara,Liu, Lichen
, p. 3353 - 3363 (2021/06/06)
Bimetallic CuFe nanoparticles covered by thin carbon layers were developed as a potential substitute for noble metal catalysts and have been used for chemoselective hydrogenation of 5-(hydroxymethyl)furfural (HMF) to 2,5-bis(hydroxymethyl)furan (BHMF). Compared to Cu catalysts supported on conventional solid carriers prepared by impregnation, the CuFe@C nanoparticles are active and more stable catalysts. The spatial distribution of the immiscible Cu and Fe in the bimetallic CuFe@C nanoparticles is dependent on the Cu/Fe ratio, and moreover, an optimized Cu/Fe ratio has been found for hydrogenation of HMF. In the fresh Fe@C and CuFe@C catalysts, their surfaces are passivated and covered by FeOx, due to oxidation by air. Based on detailed structural characterization and catalytic studies, small Cu nanoparticles supported on Fe nanoparticles are proposed to be the key active sites for hydrogenation of HMF. These Cu nanoparticles can not only serve as the active sites for hydrogenation of HMF but also promote the reduction of FeOxinto metallic Fe, resulting in an increased number of active sites in the bimetallic CuFe@C catalyst compared to the monometallic Cu@C and Fe@C samples, resulting in significant promotion of the catalytic activity.
Two-step one-pot reductive amination of furanic aldehydes using CuAlOx catalyst in a flow reactor
Bukhtiyarov, Valerii I.,Bukhtiyarova, Marina V.,Nuzhdin, Alexey L.
, (2020/10/27)
Aminomethylhydroxymethylfuran derivatives are well known compounds which are used in the pharmaceutical industry. Reductive amination of 5-hydroxymethylfurfural (HMF) derived from available non-edible lignocellulosic biomass is an attractive method for the synthesis of this class of compounds. In the present study, the synthesis of N-substituted 5-(hydroxymethyl)-2-furfuryl amines and 5-(acetoxymethyl)-2-furfuryl amines was performed by two-step process, which includes the condensation of furanic aldehydes (HMF and 5-acetoxymethylfurfural) with primary amines in methanol on the first step and the reduction of obtained imines with hydrogen in a flow reactor over CuAlOx catalyst derived from layered double hydroxide on the second step. This process does not require isolation and purification of intermediate imines and can be used to synthesize a number of aminomethylhydroxymethylfurans in good to excellent yield.
Synthesis of a ZIF-derived hollow yolk-shell Co@CN catalyst for the oxidative esterification of 5-hydroxymethylfurfural
Sun, Kang-Kang,Chen, Shu-Jie,Li, Ze-Lin,Lu, Guo-Ping,Cai, Chun
, p. 1602 - 1608 (2019/04/08)
A newly developed template protection-sacrifice (TPS) strategy is developed for the synthesis of hollow yolk-shell Co@CN with a large surface area and high pore volume. The catalyst exhibits excellent catalytic efficiency in base-free oxidative esterification of 5-hydroxymethylfurfural under mild conditions with excellent selectivity at a high concentration (2 M) of the reactant.
