Heterogeneous palladium-cobalt bimetal catalyst for the oxidative carbonylation of bisphenol A to polycarbonate

• Published in: Journal of applied polymer science Vol. 114; no. 4; pp. 2226 - 2234
• Main Authors: Okamoto, Masaya, Sugiyama, Jun-ichi
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 15.11.2009; Wiley
• Subjects: Applied sciences; Bimetals; Bisphenol A; Carbon monoxide; Carbonyls; Catalysts; Exact sciences and technology; Organic polymers; Palladium; Physicochemistry of polymers; Polycarbonates; Polycondensation; Preparation, kinetics, thermodynamics, mechanism and catalysts; Recycling; Clay; Organometallic polymer; Palladium complex; Condensation polymerization; Transition metal Complexes; Cobalt complex; Experimental study; Bisphenol A; Heterogeneous catalysis; polycondensation; Hydrotalcite; Pyrrolidone(vinyl) polymer; Layered double hydroxide; Polymeric catalyst; catalysts; Heteronuclear complex; Dinuclear complex; Styrene polymer; Chloro complex; Carbon monoxide; Pyridine(4-vinyl) polymer; Catalyst activity; Polycarbonate; polycarbonates
• ISSN: 0021-8995; 1097-4628; 1097-4628
• DOI: 10.1002/app.30502

Polycarbonates (PCs) were prepared by the oxidative carbonylation of bisphenol A and carbon monoxide with a hydrotalcite-supported Pd-Co complex, a Pd-Co-poly(4-vinylpyridine) complex [Pd-Co-(p-4vpy)], a Pd-Co-polystyrene-supported triphenylphosphine complex (Pd-Co-PS-TPP), or a Pd-Co-polyvinylpyrrolidone complex (Pd-Co-pvp) as a heterogeneous Pd-Co bimetal catalyst to separate the PC solution and the Pd-Co bimetal catalyst after the reaction. Propylene carbonate was used as a halogen-free solvent. Pd-Co-(p-4vpy) and Pd-Co-PS-TPP showed recycling potential, whereas Pd-Co-pvp, though not having recycling potential, yielded a high turnover number with a maximum of 1462.