Synthesis of polyketone catalyzed by Pd/C catalyst

• Published in: Journal of molecular catalysis. A, Chemical Vol. 307; no. 1; pp. 121 - 127
• Main Authors: Guo, JinTang, Ye, YaQin, Gao, Shan, Feng, YaKai
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.07.2009; Elsevier
• Subjects: Applied sciences; Carbon monoxide; Copolymerization; Exact sciences and technology; Organic polymers; Pd/C catalyst; Physicochemistry of polymers; Polyketone; Preparation, kinetics, thermodynamics, mechanism and catalysts; Reusability; Styrene; Reusability; Carbon monoxide; Polyketone; Pd/C catalyst; Styrene; Ligand effect; Temperature effect; Palladium complex; Solution copolymerization; Complex catalyst; Ketone polymer; Experimental study; Complex catalyst copolymerization; Supported catalyst; Styrene derivative polymer; Preparation; Catalyst activity
• ISSN: 1381-1169; 1873-314X
• DOI: 10.1016/j.molcata.2009.03.017

In the present work, polyketone (STCO) was successfully synthesized by use of carbon monoxide (CO) and styrene (ST) in the presence of Pd/C (5.4 wt%), bipyridine and p-toluenesulfonic acid. The final products were characterized by many methods. The effects of various reaction conditions were investigated in detail, and the reusability of Pd/C catalyst in the copolymerization of CO and ST was also probed. In the present work, polyketone (STCO) was successfully synthesized by use of carbon monoxide (CO) and styrene (ST) in the presence of Pd/C (5.4 wt%), bipyridine and p-toluenesulfonic acid. The final products were characterized by infrared Spectroscopy (IR), 13C nuclear magnetic resonance ( 13C NMR), elemental analysis, thermogravimetry (TG), differential scanning calorimetry (DSC), gel permeation chromatography (GPC) and transmission electron microscopy (TEM). The effects of various reaction conditions, including Pd/C catalyst usage, ligands, p-toluenesulfonic acid, reaction temperature and reaction time were investigated in detail, and the reusability of Pd/C catalyst in the copolymerization of CO and ST was also probed. It is found that the Pd/C catalyst shows higher catalytic activity and reusability in the copolymerization of CO and ST. It can be reused for 12 times with the highest catalytic activity of 1255.17 STCO/(g Pd h). The molecular weights and polydispersity index of the polyketone were as follows: Mn = 10,700, Mw = 19,079 and Mw/Mn = 1.78, respectively.