CAJ | 학술논문

异佛尔酮腈(IPN)与氨反应生成异佛尔酮腈亚胺和水，此反应是可逆反应，其逆反应为席夫碱的水解反应。为了获得IPN的亚胺化反应动力学方程，以IPN和氨气为原料、甲醇为溶剂，考察了303.15~333.15 K下氨腈摩尔比b=5、13、21的亚胺化反应。采用气相色谱分析，测定了IPN的浓度随时间的变化，数据拟合获得了氨腈比>1、产物初始浓度为零、恒容条件下亚胺化的反应速率方程。结果表明，反应焓变DH为-17.417 kJ×mol-1；正反应的表观活化能Ea为23.043 kJ×mol-1，指前因子ka0为8.804×103 L×(mol×s)-1；逆反应的表观活化能Eb为40.461 kJ×mol-1，指前因子kb0为5.638×106 L×(mol×s)-1。对获得的动力学方程进行了验证，转化率的实验值与计算值符合较好。获得的动力学方程为深入研究IPN的亚胺化提供了重要的参考，为工业化提供了相应的指导。
이불이동정(IPN)여안반응생성이불이동정아알화수，차반응시가역반응，기역반응위석부감적수해반응。위료획득IPN적아알화반응동역학방정，이IPN화안기위원료、갑순위용제，고찰료303.15~333.15 K하안정마이비b=5、13、21적아알화반응。채용기상색보분석，측정료IPN적농도수시간적변화，수거의합획득료안정비>1、산물초시농도위령、항용조건하아알화적반응속솔방정。결과표명，반응함변DH위-17.417 kJ×mol-1；정반응적표관활화능Ea위23.043 kJ×mol-1，지전인자ka0위8.804×103 L×(mol×s)-1；역반응적표관활화능Eb위40.461 kJ×mol-1，지전인자kb0위5.638×106 L×(mol×s)-1。대획득적동역학방정진행료험증，전화솔적실험치여계산치부합교호。획득적동역학방정위심입연구IPN적아알화제공료중요적삼고，위공업화제공료상응적지도。
Isophorone nitrile(IPN) reacts with ammonia to form isophorone imine and water, the reaction is reversible, and its reverse reaction is the hydrolysis of Schiff base. In order to obtain the imination kinetic equation of IPN, imination reactions were investigated with using methanol as the solvent under 303.15~333.15 K, with ammonia/IPN mole ratiosβ=5,β=13 andβ=21, respectively. Gas chromatography was employed to measure the concentration of IPN with time, and the imination rate equation was obtained by fitting experimental data;however the obtained equation is for the ammonia/IPN ratio>1, the initial concentration of products is zero and for the condition of constant volume. The results show that the enthalpy of the reactionΔH is-17.417 kJ×mol-1;the apparent activation energy of the forward reaction Ea is 23.043 kJ×mol-1, the reaction pre-exponential factor ka0 is 8.804×103 L×(mol×s)-1;the apparent activation energy of the backward reaction Eb is 40.461 kJ×mol-1, the reaction pre-exponential factor kb0 is 5.638×106 L×(mol×s)-1. The obtained kinetic equation was verified, and the conversion calculated from the obtained equation is in good agreement with the experimental data. The kinetic equation provides important information for a deeper study of imination of IPN and gives responding guidance on its industrialization.