Catalytic Dehydrochlorination of 1,2-Dichloroethane to Vinyl Chloride on Individual Oxides and Two-Component Silicate Catalysts
Chemistry for Sustainable Development
Tomsk State University, Pr. Lenina 36, Tomsk 634050 (Russia)
Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences,Pr. Akademika Lavrentyeva 5, Novosibirsk 630090 (Russia)
Novosibirsk State University,Ul. Pirogova 2, Novosibirsk 630090 (Russia)
Catalytic dehydrochlorination of 1,2-dichloroethane on a series of two-component silicate catalysts with regularly changing acid-base properties (Al2O3/SiO2, Ga2O3/SiO2, ZiO2/SiO2, BeO/SiO2, Y2O3/SiO2) and on oxides (γ-Al2O3, MgO) is investigated in a flow set-up at a temperature within the range 250-450 оC. It is established that the degree of 1,2-dichloroethane transformation into vinyl chloride is determined by the strength of Lewis acid centres. It is shown that catalyst deactivation is due to the formation of 1,3-dichlorobutene-2.