对间歇式高压反应釜中的花生油在超临界甲醇中的酯交换反应过程的化学反应动力学规律进行了研究.考察了反应压力、醇油摩尔比、反应温度和反应时间对酯交换反应的影响.实验结果表明:超临界甲醇中的酯交换反应的表观反应级数为1.5,反应...对间歇式高压反应釜中的花生油在超临界甲醇中的酯交换反应过程的化学反应动力学规律进行了研究.考察了反应压力、醇油摩尔比、反应温度和反应时间对酯交换反应的影响.实验结果表明:超临界甲醇中的酯交换反应的表观反应级数为1.5,反应的活化能Ea=28.85 kJ/m o l.在适宜的条件下,反应产物中脂肪酸甲酯的产率超过90%.展开更多
The kinetics of simultaneous transesterification and esterification with a carbon-based solid acid catalyst was studied.Two solid acid catalysts were prepared by the sulfonation of carbonized vegetable oil asphalt and...The kinetics of simultaneous transesterification and esterification with a carbon-based solid acid catalyst was studied.Two solid acid catalysts were prepared by the sulfonation of carbonized vegetable oil asphalt and petroleum asphalt.These catalysts were characterized on the basis of elemental analysis,acidity site concentration,the Brunauer-Emmett-Teller（BET）surface area and pore size.The kinetic parameters with the two catalysts were determined,and the reaction system can be described as a pseudo homogeneous catalyzed reaction.All the forward and reverse reactions follow second order kinetics.The calculated concentration values from the kinetic equations are in good agreement with experimental values.展开更多
文摘对间歇式高压反应釜中的花生油在超临界甲醇中的酯交换反应过程的化学反应动力学规律进行了研究.考察了反应压力、醇油摩尔比、反应温度和反应时间对酯交换反应的影响.实验结果表明:超临界甲醇中的酯交换反应的表观反应级数为1.5,反应的活化能Ea=28.85 kJ/m o l.在适宜的条件下,反应产物中脂肪酸甲酯的产率超过90%.
文摘The kinetics of simultaneous transesterification and esterification with a carbon-based solid acid catalyst was studied.Two solid acid catalysts were prepared by the sulfonation of carbonized vegetable oil asphalt and petroleum asphalt.These catalysts were characterized on the basis of elemental analysis,acidity site concentration,the Brunauer-Emmett-Teller（BET）surface area and pore size.The kinetic parameters with the two catalysts were determined,and the reaction system can be described as a pseudo homogeneous catalyzed reaction.All the forward and reverse reactions follow second order kinetics.The calculated concentration values from the kinetic equations are in good agreement with experimental values.
