The solvent extraction method was used to obtain trans-1,2-cyclohexanediol in the synthesis from cyclohexene and hydrogen peroxide.On the basis of the phase equilibrium for trans-1,2-cyclohehanediol in methyl acetate,...The solvent extraction method was used to obtain trans-1,2-cyclohexanediol in the synthesis from cyclohexene and hydrogen peroxide.On the basis of the phase equilibrium for trans-1,2-cyclohehanediol in methyl acetate,by using the laser monitoring technique,the solubilities of trans-1,2-cyclohexanediol in methyl acetate and water mixed solvent were measured in a larger temperature interval.A solubility UNIFAC model was proposed.The model was verified with experimental data in ternary systems of water+methyl acetate+trans-1,2-cyclohexanediol,and the solubilities calculated with the model were in good agreement with experimental data.展开更多
采用气相色谱法和酸碱滴定法监控反应进程,验证了1,2-环己二醇是环己烯氧化制备己二酸过程中最重要的氧化中间体;在该前提下,以磷酸为助剂,采用初始浓度法研究了钨酸催化H2O2氧化环己烯生成1,2-环己二醇的反应动力学.结果表明,环己烯反...采用气相色谱法和酸碱滴定法监控反应进程,验证了1,2-环己二醇是环己烯氧化制备己二酸过程中最重要的氧化中间体;在该前提下,以磷酸为助剂,采用初始浓度法研究了钨酸催化H2O2氧化环己烯生成1,2-环己二醇的反应动力学.结果表明,环己烯反应级数为1.33,H_2O_2反应级数为1.08,动力学方程为r=2.322′10^(10(e^(-10480/T)C_(c_e)^(1.33)c_(H_2O_2)^(1.08),活化能Ea=87.15 k J/mol,指前因子A=2.322×10^(10).通过实验验证氧化动力学方程,计算值和实验值的平均相对误差为0.017,两者基本吻合.展开更多
文摘The solvent extraction method was used to obtain trans-1,2-cyclohexanediol in the synthesis from cyclohexene and hydrogen peroxide.On the basis of the phase equilibrium for trans-1,2-cyclohehanediol in methyl acetate,by using the laser monitoring technique,the solubilities of trans-1,2-cyclohexanediol in methyl acetate and water mixed solvent were measured in a larger temperature interval.A solubility UNIFAC model was proposed.The model was verified with experimental data in ternary systems of water+methyl acetate+trans-1,2-cyclohexanediol,and the solubilities calculated with the model were in good agreement with experimental data.
文摘采用气相色谱法和酸碱滴定法监控反应进程,验证了1,2-环己二醇是环己烯氧化制备己二酸过程中最重要的氧化中间体;在该前提下,以磷酸为助剂,采用初始浓度法研究了钨酸催化H2O2氧化环己烯生成1,2-环己二醇的反应动力学.结果表明,环己烯反应级数为1.33,H_2O_2反应级数为1.08,动力学方程为r=2.322′10^(10(e^(-10480/T)C_(c_e)^(1.33)c_(H_2O_2)^(1.08),活化能Ea=87.15 k J/mol,指前因子A=2.322×10^(10).通过实验验证氧化动力学方程,计算值和实验值的平均相对误差为0.017,两者基本吻合.
