e-ISSN: 2073-4344

Código de proyecto: CTQ2016-75016-R

Palabras clave: Solventless reaction Polycarbonates Metalloporphyrin Fluorinated catalyst Epoxide Copolymerisation Compressed co2 Compressed co 2 Chromium

Fecha de alta del registro: 2023-02-22

Versión del articulo depositado: info:eu-repo/semantics/publishedVersion

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: Catalysts. 7 (7):

Referencia 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

Acrónimo: ECO2VALCAT

Tipo de publicación: Journal Publications

Autor según el artículo: Carrilho, Rui M. B. Dias, Lucas D. Rivas, Raquel Pereira, Mariette M. Claver, Carmen Masdeu-Bulto, Anna M.

Departamento: Química Física i Inorgànica

Autor/es de la URV: Claver Cabrero, Maria del Carmen Orosia / Masdeu Bultó, Anna Maria / Rivas Del Valle, Raquel

Resumen: 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).

Áreas temáticas: Química Physical and theoretical chemistry Farmacia Environmental science (all) Engenharias ii Ciências biológicas ii Chemistry, physical Catalysis Astronomia / física

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 20734344

Direcció de correo del autor: carmen.claver@urv.cat annamaria.masdeu@urv.cat raquel.rivas@urv.cat raquel.rivas@urv.cat

Identificador del autor: 0000-0002-2518-7401 0000-0001-7938-3902 0000-0002-2007-7481 0000-0002-2007-7481

Volumen de revista: 7

Enlace a la fuente original: https://www.mdpi.com/2073-4344/7/7/210

Programa de financiación: PROGRAMA ESTATAL DE INVESTIGACIÓN, DESARROLLO E INNOVACIÓN ORIENTADA A LOS RETOS DE LA SOCIEDAD

DOI del artículo: 10.3390/catal7070210

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2017

Acción del progama de financiación: VALORIZACION EFICIENTE DE CO2 A COMBUSTIBLES Y COMPUESTOS DE ALTO VALOR AÑADIDO MEDIANTE CATALISIS HOMOGENEA Y NANO-CATALISIS