四氯化锡催化聚丙烯腈关环反应机理的研究
STUDIES ON THE CYCLIZATION MACHANISM OF POLYACRYLONITRILE (PAN) CATALYZED BY TIN-TETRACHLORIDE
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摘要: 本文用X射线光电子能谱(xps)及红外光谱对四氯化锡催化聚丙烯腈分子内氰基关环反应的机理进行了研究,通过氰基中氮原子和四氯化锡中锡原子的结合能变化及在红外光谱中观察到N→Sn配位健的形成,认为该反应是络合催化反应。Abstract: The cyclization machanism of polyacrylonitrile(PAN) catalyzed by Yin-tetrachloride has been studied in the present paper. The experimental results show that the catalytic reaction is through the succesive co mplexation betty een tin atom in SnCl4 and CN group in PAN. The suggested cyclization machanism is described in the following.
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