Аннотация:Influence of additives of zeolite component to traditional fused iron catalyst of synthesis of hydrocarbons from the syngas diluted with nitrogen by method of Fischer-Tropsch, type and the composition of zeolite, modification of zeolite on activity and selectivity of binary catalytic system is investigated. Influence of type and the content of zeolite in composition of Pt-catalysts on isomerization and cracking activity in modeling reaction of isomerization of n-hexane as component of C5-C10 gasoline fraction are investigated also. It is shown, that the composition and distribution of hydrocarbon products of synthesis of Fisher-Tropsch are determined substantially by acid properties of zeolites. Zeolites having more acid centres of medium strength, show higher isomerization activity.