Megías-Sayago Cristina, Bonincontro Danilo, Lolli Alice, Ivanova Svetlana, Albonetti Stefania, Cavani Fabrizio, Odriozola José A
Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro Mixto Universidad de Sevilla-CSIC, Seville, Spain.
Dipartimento di Chimica Industriale "Toso Montanari, " Università di Bologna, Bologna, Italy.
Front Chem. 2020 Jun 4;8:461. doi: 10.3389/fchem.2020.00461. eCollection 2020.
A series of gold catalysts supported on pure CeO, ZrO, and two different Ce-Zr mixed oxides have been prepared and tested in the 5-hydroxymethyl-2-furfural oxidation reaction. All catalysts show high catalytic activity (100% conversion) and important selectivity (27-41%) to the desired product i.e., 2,5-furandicarboxylic acid at low base concentration. Products selectivity changes with the support nature as expected, however, the observed trend cannot be related neither to gold particle size, nor to catalyst reducibility and oxygen mobility. An important relation between the FDCA selectivity and the support textural properties is observed, conducing to the general requirement for optimal pore size for this reaction.
制备了一系列负载在纯CeO、ZrO以及两种不同Ce-Zr混合氧化物上的金催化剂，并在5-羟甲基-2-糠醛氧化反应中进行了测试。在低碱浓度下，所有催化剂对所需产物即2,5-呋喃二甲酸均表现出高催化活性（100%转化率）和重要选择性（27-41%）。产物选择性如预期的那样随载体性质而变化，然而，观察到的趋势既与金颗粒大小无关，也与催化剂的还原性和氧迁移率无关。观察到FDCA选择性与载体结构性质之间存在重要关系，这导致了该反应对最佳孔径的一般要求。
