摘要
分别考察了在甲苯、环己烷、四氯化碳、三氯甲烷、乙酸乙酯、四氢呋喃、二口恶烷和丙酮中磺酸树脂Ｄ－７２催化α－蒎烯异构化的活性和选择性．发现溶剂对Ｄ－７２的催化性能有很大的影响，极性溶剂能提高催化活性．动力学研究表明，α－蒎烯在Ｄ－７２上的异构化服从一级反应模型，并经最小二乘法处理数据，用甲苯或二口恶烷作溶剂时的反应活化能分别为７４．３５ｋＪ／ｍｏｌ和４７．１４ｋＪ／ｍｏｌ。
The isomerization of α pinene catalyzed by D 72 sulfonic resin occur in different solvents such as toluene,cyclohexane,carbon tetrachloride,methenyl chloride,ethyl acetate,tetrahydrofuran,dioxane and acetone.It is found that solvents have strong effect on the catalysis properties of D 72 and polar solvents can increase the activity.The isomerization kineties of α pinene on D 72 is in keeping with first order reaction model.By least square linear regression,it was measured that the activation energy of the isomerization of α pinene in toluene is 74.35 kJ/mol,and in dioxane is 47.14 kJ/mol -1 ,these results reveal that solvents possess strong action to change the strength of acidic center.
出处
《晓庄学院自然科学学报》
CAS
1997年第1期40-43,共4页
Journal of Natural Science of Hunan Normal University
基金
国家自然科学基金
