The paper provides the results of practical research work on coke formation laws on catalysts produced on the basis of natural clays and clinoptilolite. To study the amount and character of coke deposition products on the surface of catalysts, as well as determination of optimum conditions for their oxidizing regeneration the samples of selected catalysts were investigated by the methods of Differential Thermal and Thermogravimetric analyses. Mechanical stability of catalysts prepared from natural carriers was studied. Introduction of natural bentonite clay (~20%) as a binding component into carrier gives catalysts of high mechanical stability. Study of activity and mechanical stability of catalysts showed their practical use in production of benzene by hydrogenated processing of aromatic concentrates.