e-ISSN: 2073-4344
Codi de projecte: CTQ2016-75016-R
Paraules clau: Solventless reaction Polycarbonates Metalloporphyrin Fluorinated catalyst Epoxide Copolymerisation Compressed co2 Compressed co 2 Chromium
Data d'alta del registre: 2024-09-07
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Catalysts. 7 (7):
Referència de l'ítem segons les normes APA: Carrilho, Rui M. B. Dias, Lucas D. Rivas, Raquel Pereira, Mariette M. Claver, Carmen Masdeu-Bulto, Anna M. (2017). Solventless Coupling of Epoxides and CO2 in Compressed Medium Catalysed by Fluorinated Metalloporphyrins. Catalysts, 7(7), -. DOI: 10.3390/catal7070210
Acrònim: ECO2VALCAT
Tipus de publicació: Journal Publications
Autor segons l'article: Carrilho, Rui M. B. Dias, Lucas D. Rivas, Raquel Pereira, Mariette M. Claver, Carmen Masdeu-Bulto, Anna M.
Departament: Química Física i Inorgànica
Autor/s de la URV: Claver Cabrero, Maria del Carmen Orosia / Masdeu Bultó, Anna Maria / Rivas Del Valle, Raquel
Resum: Metal complexes of meso-arylporphyrins (Cr(III), Fe(III), and Zn(II)) were evaluated in the coupling reaction of cyclohexene oxide (CHO) with CO2 in compressed medium, where the Cr complexes were demonstrated to be the most active systems, leading predominantly to copolymerisation products. It is noteworthy that no addition of solvent was required. To improve the catalytic activity, and to simultaneously increase the solubility in compressed CO2, a new fluorinated catalyst, tetrakis(4-trifluoromethylphenyl)porphyrinatochromium(III) chloride (CrCl-pCF3TPP), was applied to this reaction. The alternating copolymerisation of CHO with CO2, using the Cr(III) fluorinated porphyrin catalyst, required the use of a co-catalyst, bis(triphenylphosphine)iminium chloride (PPNCl), with the best yields of copolymers being obtained at 80 ◦C, and CO2 pressures in the range of 50-110 bar, over a period of 24 h, with a low catalyst/substrate molar ratio (0.07%). The polycarbonate's structure was analysed by 1H NMR, 13C NMR, and MALDI-TOF spectroscopy, which demonstrated high carbonate incorporations (98-99%). Gel permeation chromatography revealed number-average molecular weights (Mn) in the range of 4800-12,800 and narrow molecular weight distributions (Mw/Mn ≤ 1.63).
Àrees temàtiques: Química Physical and theoretical chemistry Farmacia Environmental science (all) Engenharias ii Ciências biológicas ii Chemistry, physical Catalysis Astronomia / física
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 20734344
Adreça de correu electrònic de l'autor: raquel.rivas@urv.cat raquel.rivas@urv.cat annamaria.masdeu@urv.cat carmen.claver@urv.cat
Identificador de l'autor: 0000-0002-2007-7481 0000-0002-2007-7481 0000-0001-7938-3902 0000-0002-2518-7401
Volum de revista: 7
Enllaç font original: https://www.mdpi.com/2073-4344/7/7/210
Programa de finançament: PROGRAMA ESTATAL DE INVESTIGACIÓN, DESARROLLO E INNOVACIÓN ORIENTADA A LOS RETOS DE LA SOCIEDAD
DOI de l'article: 10.3390/catal7070210
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2017
Acció del programa de finançament: VALORIZACION EFICIENTE DE CO2 A COMBUSTIBLES Y COMPUESTOS DE ALTO VALOR AÑADIDO MEDIANTE CATALISIS HOMOGENEA Y NANO-CATALISIS