关键词: 氯乙烯, 氢氯化, 乙炔, 磷酸铋, 无汞催化剂

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