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六苯基环三硅氮烷合成工艺的改进

滕雅娣;佟秀君;王思林;李旭日

  Hexaphenyl cyclotrisilazane was synthesized from diphenyl dichlorosilane and ammonia with toluene as solvent.The effects of input material concentration, reaction temperature, ammonia flow rate and separation method on product yield were investigated.The structure of hexaphenyl cyclotrisilazane was characterized with FTIR and XRD.It was found that when diphenyl dichlorosilane concentration was 0.96 mol·L -1 , reaction temperature was 111—112℃,NH_3 flow rate was 0.02 m3·h -1 , the yield of hexaphenyl cyclotrisilazane could reach 91.1%.Using ammonia water was better than hot filtration to weed out ammonium chloride at the period of product separation.It enhanced separation efficiency and simplified the process.At the same time it also decreased pollution to the environment by reducing volatile matter of toluene.……   
[关键词]:六苯基环三硅氮烷;二苯基二氯硅烷;氨解;合成
[文献类型]:期刊
[文献出处]: 《化工学报2007年02期
[格式]:PDF原版; EPUB自适应版(需下载客户端)