Non-noble Ni@NbO x Catalyst for Selective Hydrodehydroxylation of 5-Hydroxymethylfurfural to 5-Methylfurfural
Year: 2024
Type: article
Abstract: Selective hydrogenation of substrates containing multiple unsaturated bonds (C═C and C═O) is a crucial catalytic process in the production of high-value chemicals. The development of nonprecious metal catalytic systems is of importance for hydrogenation processes due to the high cost and scarcity of noble metals. In this study, we have developed a straightforward and versatile encapsulation technique for the synthesis of Ni@NbO x catalysts, which enables highly selective hydrodehydroxylation of 5-hydroxymethylfurfural (HMF) to 5-methylfurfural (MF) under H 2 . Mechanistic studies revealed that metallic Ni 0 encapsulated within NbO x facilitates hydrogen dissociation through an energy quasi-barrierless process (<0.1 eV), while simultaneously avoiding the adsorption of furan or C═O groups over Ni nanoparticles, therefore enhancing the selective hydrodehydroxylation of HMF to MF. Furthermore, the Ni@NbO x catalyst was tolerant to different conditions for selective hydrogenation, such as crude H 2 containing CO, substrates contaminated with various metal salts, etc.
Institutions: Wuhan University of Technology, Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, State Key Laboratory of Advanced Technology For Materials Synthesis and Processing, East China University of Science and Technology, Cardiff University, University of Chinese Academy of Sciences, University of Namur
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4403645099