Author, as appears in the article.: Tampieri A; Russo C; Marotta R; Constantí M; Contreras S; Medina F
Department: Enginyeria Química
URV's Author/s: Constantí Garriga, Magdalena / Medina Cabello, Francisco
Keywords: Rehydrated hydrotalcite Microwave-assisted organic synthesis Layered double hydroxide Catalyst recycle Biofuel production
Abstract: © 2020 Elsevier Ltd The microwave-assisted neat aldol condensation of biomass-derived platform chemical 5-hydroxymethyl furfural (HMF) and acetone over hydrotalcite-based catalysts has been studied. High conversions are obtained in very short times with relatively low catalyst loadings. The condensation products, which are biofuel and functional polymer precursors, are selectively obtained. Heterogeneous catalysts with different basic properties derived from the same parent hydrotalcite have been tested. The solids were characterized by PXRD, ICP-AES, ESEM-EDX, TEM, FT-IR and Raman spectroscopy, N2 physisorption, CO2 chemisorption and TGA-MS. The products in the final reaction mixtures were determined by GC-FID and -MS, HPLC-DAD and -TOF, and NMR. NMR was also used to determine the stereoconfiguration of the obtained products and pointed to a complete E-selectivity of our process. Different catalyst recycle strategies have been explored, and the most active catalyst, a meixnerite-type solid, can be recycled with low activity loss.
Thematic Areas: Zootecnia / recursos pesqueiros Saúde coletiva Química Odontología Molecular biology Medicina veterinaria Medicina iii Medicina ii Medicina i Interdisciplinar Immunology General medicine Farmacia Engenharias ii Educação física Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências agrárias i Biotecnología Biochemistry & molecular biology
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: francesc.medina@urv.cat magdalena.constanti@urv.cat
Author identifier: 0000-0002-3111-1542 0000-0002-3547-4199
Record's date: 2023-02-23
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S0926337320310146
Papper original source: Molecular Immunology. 128 235-248
APA: Tampieri A; Russo C; Marotta R; Constantí M; Contreras S; Medina F (2020). Microwave-assisted condensation of bio-based hydroxymethylfurfural and acetone over recyclable hydrotalcite-related materials. Molecular Immunology, 128(), 235-248. DOI: 10.1016/j.molimm.2020.10.013
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Article's DOI: 10.1016/j.molimm.2020.10.013
Entity: Universitat Rovira i Virgili
Journal publication year: 2020
Publication Type: Journal Publications
Repositori URV