Yakubovich M. 3.Kinetic modelling of products distribution and mechanism of Fisсher-Tropsсh process over cobalcontaining catalysts

3.We developed a new approach for quantitative analysis of products distribution in the Fisсher-Tropsсh process. The approach is based on the fragmentation of the kinetic scheme. We show that growth of carbon chain occurs according to two different mechanisms. Olefine and paraffins are formed through the formation of intermediate, which does not partisipate in the growth of carbon chain. The mechanisms of methane formation and C2+ paraffins formation are different. The intermediate hydrogen-alkyl complexes are responsible for the formation of C2+ paraffins and olefins. Secondary reactions of ethylene lead to the formation of linear hydrocarbons, whereas involving of propylene into oligomerization produces isoparaffins. A kinetic model is developed describing a distribution of hydrocarbons formed at elevated pressure. We suggest a mechanism of hydrocarbons formation at low and high pressures. A highly active catalyst for synthesis