醇解-氨气中和法合成甲基三乙氧基硅烷的研究  

Synthesis of Methyl Triethoxysilane by Alcoholysis Combining with Ammonia Neutralization Method

作　　者：姚红[1] 汪民康[1] 孙伟[1] 李永刚[1] 马慧娟[1] 苗刚[1] 陈海平[1] 

机构地区：[1]湖北兴发化工集团股份有限公司,湖北宜昌443000

出　　处：《有机硅材料》2014年第1期21-24,共4页Silicone Material

摘　　要：以甲基三氯硅烷和无水乙醇为原料，采用醇解反应结合氨气中和法合成了甲基三乙氧基硅烷。探讨了加料方式、滴加温度、反应温度、反应时间、原料配比及氨气流量对产品产率的影响。结果表明，与不加氨气相比，通入氨气可使甲基三乙氧基硅烷产率提高近20％。最优实验条件是：甲基三氯硅烷滴加到无水乙醇中、滴加温度控制在0℃左右、滴加时间2h、反应温度40～44℃、反应时间3h、乙醇与甲基三氯硅烷的量之比为2．8、氨气流量控制在0．7L／min，此时产率可达75％。Methyl triethoxysilane was prepared by alcoholysis combining with ammonia neutralization method. The effects of feeding order, condensation temperature, reaction temperature and time, material rati- o, and flow rate of ammonia on the yield of product was investigated. Results show that ammonia will raise the yield of methyl triethoxysilane nearly 20% compare with those without ammonia. When methyl trichlorosilane is dropped into ethanol, it keeps the condensation temperature at 0 ℃, reaction temperature at 40-44 ℃, drop time and reaction time at 2 hours and 3 hours respectively, the mole ratio of ethanol and methyl trichlorosilane at 2.8, the flow rate of ammonia controlled at 0. 7 L/min, and the maximal yield of the product will up to 75%.

关 键 词：氨气 中和法 甲基三氯硅烷 甲基三乙氧基硅烷 乙醇 

分 类 号：O642.42[理学—物理化学]