Kinetics of the Mono-esterification Between Terephthalic Acid and 1,4-Butanediol  

作　　者：田文玉 曾作祥 薛为岚 李应宾 章添钰 

机构地区：[1]Department of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China [2]Institute of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

出　　处：《Chinese Journal of Chemical Engineering》2010年第3期391-396,共6页中国化学工程学报（英文版）

摘　　要：The chemical kinetics of the monoesterification between terephthalic acid(TPA)and 1,4-butanediol (BDO)catalyzed by a metallo-organic compound was studied using the initial rate method.The experiments were carried out in the temperature range of 463-483 K,and butylhydroxyoxo-stannane(BuSnOOH)and tetrabutyl titanate[Ti(OBu)4]were used as catalyst respectively.The initial rates of the reaction catalyzed by BuSnOOH or Ti(OBu)4 were measured at a series of initial concentrations of BDO(or TPA)with the concentration of TPA(or BDO)kept constant.The reaction orders of reagents were determined by the initial rate method.The results indicate that the reaction order for TPA is related with the species of catalyst and it is 2 and 0.7 for BuSnOOH and Ti(OBu)4 respectively.However,the order for BDO is the same 0.9 for the two catalysts.Furthermore,the effects of temperature and catalyst concentration are investigated,and the activation energies and the reaction rate constants for the two catalysts were determined.The chemical kinetics of the monoesterification between terephthalic acid（TPA）and 1,4-butanediol （BDO）catalyzed by a metallo-organic compound was studied using the initial rate method.The experiments were carried out in the temperature range of 463-483 K,and butylhydroxyoxo-stannane（BuSnOOH）and tetrabutyl titanate[Ti（OBu）4]were used as catalyst respectively.The initial rates of the reaction catalyzed by BuSnOOH or Ti（OBu）4 were measured at a series of initial concentrations of BDO（or TPA）with the concentration of TPA（or BDO）kept constant.The reaction orders of reagents were determined by the initial rate method.The results indicate that the reaction order for TPA is related with the species of catalyst and it is 2 and 0.7 for BuSnOOH and Ti（OBu）4 respectively.However,the order for BDO is the same 0.9 for the two catalysts.Furthermore,the effects of temperature and catalyst concentration are investigated,and the activation energies and the reaction rate constants for the two catalysts were determined.

关 键 词：ESTERIFICATION 1 4-butanediol terephthalic acid KINETICS 

分 类 号：TQ223.162[化学工程—有机化工] O643.1[理学—物理化学]