Repositori URV

Author, as appears in the article.: Urbina C, Campos C, Pecchi G, Claver C, Reyes P

Department: Química Física i Inorgànica

URV's Author/s: Claver Cabrero, Maria del Carmen Orosia

Keywords: Mesostructured zro 2 Enantioselective hydrogenation Colloidal platinum Chiral modifier

Abstract: The enantioselective hydrogenation of 1-phenyl-1,2-propanedione over Pt colloids stabilized with (R,S)-4,5-dihydro-4,5-diphenyl-2-(6-cyanopyridinyl)imidazoline (CI) supported on a meso-structured ZrO2 under a pressure of 40 bar of H-2 at 298 K has been investigated. The metal loading in all catalysts was 1 wt%. The effect of the amount of chiral modifier on the metal particle size and on the catalytic behavior was analyzed. It was found that as the CI/Pt molar ratio increases from 2.5 to 3.5 the Pt crystal size decreases from 3.0 to 1.8 nm. All catalysts were very active in the studied reaction, with the most active one being the catalyst with smaller Pt particles, whereas the selectivity is higher in those catalysts with larger chiral modified Pt metal particles.

Thematic Areas: Zootecnia / recursos pesqueiros Saúde coletiva Química Psicología Planejamento urbano e regional / demografia Physical and theoretical chemistry Pharmaceutical science Organic chemistry Odontología Nutrição Molecular medicine Medicine (miscellaneous) Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Interdisciplinar Geografía General medicine Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Educação física Economia Drug discovery Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, organic Chemistry, multidisciplinary Chemistry (miscellaneous) Biotecnología Biodiversidade Biochemistry & molecular biology Astronomia / física Analytical chemistry

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 1420-3049

Author's mail: carmen.claver@urv.cat

Author identifier: 0000-0002-2518-7401

Record's date: 2023-02-18

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/1420-3049/15/5/3428

Papper original source: Molecules. 15 (5): 3428-40

APA: Urbina C, Campos C, Pecchi G, Claver C, Reyes P (2010). Chiral Pt/ZrO2 catalysts. Enantioselective hydrogenation of 1-phenyl-1,2-propanedione. Molecules, 15(5), 3428-40. DOI: 10.3390/molecules15053428

Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/

Article's DOI: 10.3390/molecules15053428

Entity: Universitat Rovira i Virgili

Journal publication year: 2010

Publication Type: Journal Publications