ethylene

Modification of the Catalytic System for the Industrial Chlorine Processing of Ethylene in 1,2-Dichloroethane

A new mechanism for the reaction of direct (additive) chlorination of ethylene with chlorine from the formation of 1,2-dichloroethane in the presence of FeCl3 catalyst promoted by NaCl has been proposed. It was found that the rate depends on the active phase concentration of the catalyst and the promoter, as well as the formation of the Na[Fe(C2H4Cl)4] complex, which is a surface intermediate of the reaction.

Stabilizer for the catalytic system of the direct chlorine processing of ethylene to 1,2-dichlorethane

Article is devoted to the research of the influence of the sodium salt of perfluoro sulfonic  acid, as a stabilizer, on the catalytic activity of iron chloride and sodium chloride in the reaction of direct chlorination of ethylene to 1,2- dychloroethane. During research authors found that increase of stabilizer concentration up to 4% mas. had no significant impact on the catalytic activity of the complex but increase from 4% mas. up to 10% mas. allowed to shorten time of dissolution of sodium chloride and to reach needed concentration of sodium ions in the reactor of direct chlorination.

Розширення сировинної бази для одержання нижчих олефінів в Україні

The article deals with the problems of ethylene and propylene production in the world. The optimal parameters of the pyrolysis process are described. The alternative types of raw materials are analyzed. Hydrocracking vacuum gasoil, straight-run gasoil vacuum obtained from the West-Ukrainian oil, as well as dewaxing filtrate are proposed as raw materials.  Наведено дані щодо виробництва етилену і пропілену у світі. Описано оптимальні параметри проведення процесу піролізу.

Conversion of C4 Fraction of Hydrocarbon Pyrolysis Products Over ZVM+2 % Zn High-Silica Zeolite Catalyst

Conversion of C4 fraction of hydrocarbon pyrolysis products over high-silica zeolite catalyst ZVM modified by 2 mas % of Zn within the temperature range of 623–823 K and volumetric flow rates of 1000–10000 h-1 has been investigated. The yield and chemical composition of gaseous and liquid products have been determined under various conditions. It has been shown that the initial fraction is converted almost completely (98–100 %); the yield of C6-C8 lower arenes is 44.2–65.4 % within all investigated ranges of temperature and volumetric flow rates.