ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Catalyst for vinyl chloride. V. The form of inactivation of mercury contact

J. Janda, V. Hanuš, and J. Obertík

Research Institute for Acetylenchemistry, Nováky

Abstract: It was proven that in the synthesis of vinyl chloride, the HgCl₂ catalyst is mostly deactivated by the excess and unreacted C₂H₂ and by the humidity of the reaction system. The decrease of catalyst activity caused by the pressure of HgCl₂ vapor is negligible in the praxis. The only significant reaction leading partly to the reduction of HgCl₂ to Hg₂Cl₂ and metallic Hg and partly to the formation of elementary C is the reaction between C₂H₂, HgCl₂, and H₂O. This finding does not agree with the findings of others, who claim that the inactivation of catalyst is caused by the reduction of C substrate, by the reduction of thermally split C₂H₂, or by side reactions of C₂H₂ with elementary Cl.

Full paper in Portable Document Format: 123a155.pdf (in Slovak)

Chemical Papers 12 (3) 155–162 (1958)