二苯基二甲氧基硅烷反应速率常数求导  

Study on Reaction Rate Constant of Diphenyldimethoxysilane

作　　者：张翊[1] 

机构地区：[1]安徽蚌埠医学院应化所,蚌埠233003

出　　处：《有机硅材料》2001年第6期15-16,共2页Silicone Material

摘　　要：采用气相色谱法测定了线性变温条件下二苯基二甲氧基硅烷 (DDS)的质量分数 ,由此通过线性变温动力学方法求出DDS的分解反应活化能E =138 0 194kJ/mol,2 5℃反应速率常数为 1 146 9× 10 -4 /d。建立了反应速率常数与温度间关系的方程 ,由此方程可预测出存放一定时间后DDS的质量分数变化情况 ,对生产有一定指导意义。s:The mass fraction of diphenyldimethoxysilane (DDS)was measured by GC at the linearly changed temperature.The decomposition activation energy ( E )and the reaction rate constant at 25 ℃( k ) of DDS were obtained by the dynamic method of the temperature changed linearly, E =130 0194 kJ/mol,and k =1 1469×10 -4 /d?The equation of the relationship between reaction rate constant and temperature was established.The change of mass fraction of DDS was forecasted by the equation after a time stored.

关 键 词：二苯基二甲氧基硅烷 活化能 反应速率常数 贮存 线性变温动力学 求导 

分 类 号：O643.1[理学—物理化学]