Abstract: A non-merury novel catalyst with bimetallic chlorides and bimetallic phosphates based on SiO2 was prepared by dipping method and used in catalytic hydrochlorination of acetylene to vinyl chloride. The experimental results showed that reaction activity of the catalyst could be promoted obviously by introducing PO43- to it. Bimetallic phosphates of Cu and Bi based on SiO2 behaved the best in testing of catalysis, and its initial reaction activity was 1/3 time of conventional industrial HgCl2/C catalyst. The catalyst could be regenerated, but lost its activity slowly after usage and regeneration. The deactivation of the catalyst was due to the loss of Bi and carbon deposition on its surface.

Key words: vinyl chloride, hydrochlorination, acetylene, bismuth phosphate, non-mercury catalyst

摘要： 采用浸渍法制备了以SiO2为载体、铋、铜等金属的氯化物和磷酸盐为活性组分的无汞催化剂，并测试了该催化剂在乙炔氢氯化反应中的活性. 结果表明，催化剂中加入PO43-可以显著提高催化活性，其中Bi和Cu的复合磷酸盐比其他催化剂有更好的活性，在200℃的反应温度下，其初始反应活性为工业氯化汞催化剂的1/3，且催化剂有一定的可再生性. 催化剂在反应和再生过程中存在失活，主要是由Bi的流失造成的，积炭则是另一个失活原因.

关键词: 氯乙烯, 氢氯化, 乙炔, 磷酸铋, 无汞催化剂