Matias Inês A S, Selfa Pablo G, Ferraria Ana M, Botelho do Rego Ana M, Kopylovich Maximilian N, Ribeiro Ana P C, Martins Luísa M D R S
Centro de Química Estrutural, Institute of Molecular Sciences, and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal.
iBB-Institute for Bioengineering and Biosciences and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
Nanomaterials (Basel). 2022 Jan 23;12(3):362. doi: 10.3390/nano12030362.
The transformation of biomass, a carbon resource presenting a huge potential to produce valuable chemicals, requires the search for sustainable catalytic routes. This work proposes the microwave-assisted oxidation of biomass -derived substrates, such as glycerol and the furfural derivatives 5-(hydroxymethyl)furfural (HMF) and 5-hydroxymethyl-2-furancarboxylic acid (HFCA), using the C-scorpionate dichloro-gold(III) complex [AuCl(κ-Tpm)]Cl (Tpm = HCpz; pz = pyrazol-1-yl) as a catalyst, as prepared and supported on graphene, in solvent-free conditions. The unprecedented application of a mechanochemical procedure (in a planetary ball mill, in solid state) to synthesize a C-scorpionate complex, the [AuCl(κ-Tpm)]Cl, is disclosed. The immobilization of [AuCl(κ-Tpm)]Cl on graphene was performed using different methods, including some (e.g., microwave irradiation and liquid assisted grinding) for the first time. The structural properties and the performance of the prepared catalytic materials are presented and discussed.
生物质作为一种具有巨大潜力生产有价值化学品的碳资源，其转化需要寻找可持续的催化途径。这项工作提出了在无溶剂条件下，使用C-蝎型二氯金（III）配合物[AuCl(κ-Tpm)]Cl（Tpm = HCpz；pz = 吡唑-1-基）作为催化剂，对生物质衍生的底物（如甘油以及糠醛衍生物5-（羟甲基）糠醛（HMF）和5-羟甲基-2-呋喃羧酸（HFCA））进行微波辅助氧化。本文公开了一种机械化学方法（在行星式球磨机中，固态）前所未有的应用，用于合成C-蝎型配合物[AuCl(κ-Tpm)]Cl。首次使用不同方法（如微波辐射和液体辅助研磨）将[AuCl(κ-Tpm)]Cl固定在石墨烯上。介绍并讨论了所制备催化材料的结构性质和性能。
