Molecular-weight distributions of Fischer-Tropsch synthesis products when chains of C-C bonds grow on centers of two types

Three possible schemes of the mechanism of the Fischer-Tropsch synthesis were considered to explain the appearance of two probabilities of C-C chain growth (α 1 and α 2 ). According to these schemes, chain growth occurred on centers of two types by the same mechanism and by two mechanisms on catalyst centers of one or two different types. The α 1 and α 2 probabilities were dependent if the synthesis followed the first scheme and could vary independently of each other if two mechanisms were involved.