枞酸型树脂酸与顺丁烯二酸酐催化DIELS—ALDER反应动力学研究  

STUDIES ON THE KINETICS OF THE CATALITIC DIELS-ALDER REACTION OF ABIETIC-TYPE ACIDS WITH MALEIC ANHYDRIDE

作　　者：刘治猛[1] 蒋欣[1] 包树元[1] 周友明[1] 梁志勤[2] 王定选[2] 

机构地区：[1]东莞理工学院 [2]中国林业科学研究院林产化学工业研究所

出　　处：《东莞理工学院学报》1994年第2期28-36,共9页Journal of Dongguan University of Technology

基　　金：国家自然科学基金资助项目

摘　　要：本文研究了在二氧化碳气体保护下,以氯化锌为催化剂,一缩二乙二醇二甲醚为溶剂时,松香中的枞酸型树脂酸与顺丁烯二酸酐催化Diels—Alder反应的动力学,研究了反应温度、反应物浓度和催化剂浓度对反应的影响。结果表明,生成马来海松酸的速度对枞酸型树脂酸的总浓度表现为一级反应,而与顺丁烯二酸酐的浓度无关。其反应的动力学方程为:-d[ΣC_A]/dt=k_c[∑C_A]其中k_c为催化反应的速度常数,只与反应条件和氯化锌的浓度有关,[∑C_A]为枞酸型树脂酸的总浓度。The kinetics of the Diels ?Alder reaction of abietic-type acidswith maleic anhydride have been investigated by using zinc chloride as catalyst in diethylene glycol dimethyl ether solution under CO2 atm.. Effects of variables, such as temperature, concentrations of reactants and catalyst, have been studied. It is showed that the rate of Diels - Alder reaction is a first-order reaction to the total concentration of abietic-tpye acids, but has no relation to the concentration of maleic anhydride. Its kinetics eqution as follows: - d[∑ CA]/dt = kc[∑ CA], where kc-rate constant of catalytic reaction——is related only to the reaction condition and concentration of zinc chloride, and [∑CA] is the total concentration of abietic-type acids.

关 键 词：树脂酸 顺丁烯二酸酐 催化剂浓度 二乙二醇二甲醚 DIELS-ALDER反应 马来海松酸 氯化 速度常数 催化反应 动力学方程 

分 类 号：TQ351.471[化学工程] O623[理学—有机化学]