Tuning the selectivity of phenol hydrogenation using Pd, Rh and Ru nanoparticles supported on ceria- and titania-modified silicas

Autor(es)

Vono, Lucas L. R. ^{[1, 2]} ; Broicher, Cornelia ^{[1, 3]} ; Philippot, Karine ^[2] ; Rossi, Liane M. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, Av Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil

^[2] Univ Toulouse, CNRS, LCC Lab Chim Coordinat, UPR8241, UP, INPT, F-31077 Toulouse 4 - France

^[3] Tech Univ Berlin, Str 17 Juni 124, D-10623 Berlin - Germany

• Tipo de documento: Artigo Científico
• Fonte: CATALYSIS TODAY; v. 381, p. 126-132, DEC 1 2021.
• Citações Web of Science: 0

Resumo

The large-scale production of biomass-derived fuels generates large amounts of lignocellulosic residues that may further be converted into bio-derived value-added chemicals. Here, we investigate the selective hydrogenation of phenol as a model compound for lignocellulosic derivatives. Pre-formed PVP-stabilized nanoparticles (NPs) of Pd, Ru and Rh prepared using an organometallic approach were immobilized on different magnetic silica-based supports modified with TiO2 or CeO2. In phenol hydrogenation studies, the Pd NP catalysts show high selectivity towards cyclohexanone, while Ru and Rh NP catalysts primarily afford cyclohexanol. Titania-containing supports increase the selectivity towards cyclohexanol for both Pd- and Rh-based catalysts. Interestingly, the combination of Ru NPs and titania-modified silica results in 100 % selectivity of cyclohexanol. After removal of the PVPstabilizer by thermal treatment, the catalyst combining Pd NPs and titania-modified silica leads to 100 % selectivity towards cyclohexanone. Despite the difficulties associated with the de-polymerization of biomass residues, the development of new catalyst materials for highly selective transformations of biomass-derived platform molecules contributes to a sustainable production of various value-added chemicals for several applications. (AU)

• Processo FAPESP: 18/26253-6 - Catálise cooperativa: uma alternativa para o desenvolvimento de catalisadores a base de ouro e metais de transição abundantes
• Beneficiário: Liane Marcia Rossi
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 10/11102-0 - Desenvolvimento de nanocompósitos como suportes para catalisadores metálicos nanoestruturados
• Beneficiário: Lucas Lucchiari Ribeiro Vono
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 16/16738-7 - Estudo da influência de ligantes orgânicos sobre a reatividade de nanopartículas de ouro
• Beneficiário: Liane Marcia Rossi
• Modalidade de apoio: Auxílio à Pesquisa - Regular