Buonerba Antonio, Impemba Salvatore, Litta Antonella Dentoni, Capacchione Carmine, Milione Stefano, Grassi Alfonso
Dipartimento di Chimica e Biologia "Adolfo Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II, 84084, Fisciano (SA), Italy.
Interuniversity Consortium Chemical Reactivity and Catalysis (CIRCC), Via Celso Ulpiani 27, 70126 (BA), Italy.
ChemSusChem. 2018 Sep 21;11(18):3139-3149. doi: 10.1002/cssc.201801560. Epub 2018 Aug 21.
The aerobic oxidation and oxidative esterification of 5-hydroxymethylfurfural (HMF) catalyzed by gold nanoparticles (AuNPs) supported on a semicrystalline nanoporous multiblock copolymer matrix consisting of syndiotactic poly(styrene)-cis-1,4-poly(butadiene) (sPSB) have been investigated. Depending on the reaction parameters (support nanoporosity, presence of water, solvent, temperature, cocatalyst, oxygen pressure), the conversion of HMF can be finely addressed to the formation of the desired oxidation product, such as 2,5-diformylfuran (DFF), 5-formylfuran-2-carboxylic acid (FFCA), methyl 5-(hydroxymethyl)furan-2-carboxylate (MHMFC), dimethyl furan-2,5-dicarboxylate (DMFC), and furan-2,5-dicarboxylic acid (FDCA), under optimized reaction conditions. The AuNP-sPSB catalyst is highly effective and selective because the polymer support acts as a conveyor and concentrator of the reactants toward the catalytic sites.
研究了负载在由间同立构聚苯乙烯-顺式-1,4-聚丁二烯（sPSB）组成的半结晶纳米多孔多嵌段共聚物基质上的金纳米颗粒（AuNPs）催化5-羟甲基糠醛（HMF）的需氧氧化和氧化酯化反应。根据反应参数（载体纳米孔隙率、水的存在、溶剂、温度、助催化剂、氧气压力），在优化的反应条件下，HMF的转化率可以精确地导向所需氧化产物的形成，如2,5-二甲酰基呋喃（DFF）、5-甲酰基呋喃-2-羧酸（FFCA）、5-（羟甲基）呋喃-2-羧酸甲酯（MHMFC）、呋喃-2,5-二甲酸二甲酯（DMFC）和呋喃-2,5-二甲酸（FDCA）。AuNP-sPSB催化剂具有高效性和选择性，因为聚合物载体充当反应物向催化位点的输送器和浓缩器。
