title: Hydrolysis of polycarbonate catalyzed by ionic liquid [Bmim][Ac].
abstract: Hydrolysis of polycarbonate (PC) was studied using ionic liquid 1-butyl-3-methylimidazolium acetate ([Bmim][Ac]) as a catalyst. The influences of temperature, time, water dosage and [Bmim][Ac] dosage on the hydrolysis reaction were examined. Under the conditions of temperature 140°C, reaction time 3.0 h, m([Bmim][Ac]):m(PC)=1.5:1 and m(H(2)O):m(PC)=0.35:1, the conversion of PC was nearly 100% and the yield of bisphenol A (BPA) was over 96%. The ionic liquid could be reused up to 6 times without apparent decrease in the conversion of PC and yield of BPA. The kinetics of the reaction was also investigated. The results showed that the hydrolysis of PC in [Bmim][Ac] was a first-order kinetic reaction with an activation energy of 228 kJ/mol.
authors.affiliation: College of Chemical Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, 266042 Qingdao, China.
authors.forename: Xiuyan
authors.initials: X
authors.lastname: Song
authors.forename: Fusheng
authors.initials: F
authors.lastname: Liu
authors.forename: Lei
authors.initials: L
authors.lastname: Li
authors.forename: Xuequn
authors.initials: X
authors.lastname: Yang
authors.forename: Shitao
authors.initials: S
authors.lastname: Yu
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Ge
mesh_terms: D001559:Benzhydryl Compounds / Q000737:chemistry*; D002384:Catalysis; D006868:Hydrolysis; D007093:Imidazoles / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D007700:Kinetics; D010636:Phenols / Q000737:chemistry*; D011076:Polycarboxylate Cement / Q000737:chemistry*; D059027:Recycling / Q000379:methods*; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D007093:Imidazoles; D052578:Ionic Liquids; D010636:Phenols; D011076:Polycarboxylate Cement; C525963:1-butyl-3-methylimidazolium; C005506:polycarbonate; C006780:bisphenol A; D000098826:Bisphenol A Compounds