149 Chemistry and Technology of Fuels and Oils, Vol. 52, No. 2, May, 2016 (Russian Original No.2, March– April, 2016) GENERATION OF HYDROCARBONS BY HYDROTHERMAL TRANSFORMATION OF ORGANIC MATTER OF DOMANIK ROCKS G. P. Kayukova, 1,2 A. M. Kiyamova, 1 A. N. Mikhailova, 1 I. P. Kosachev, 1 S. M. Petrov, 3 G. V. Romanov, 1,2 L. M. Sitdikova, 2 I. N. Plotnikova, 2 and A. V. Vakhin 2 ____________________________________________________________________________________________________ 1 A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Science Center, Russian Academy of Sciences, Kazan, Russia. 2 Kazan (Volga region) Federal University, Kazan, Russia. 3 Kazan National Research Technological University, Kazan, Russia. E-mail: kayukova@iopc.ru. Translated from Khimiya i Tekhnologiya Topliv i Masel , No. 2, pp. 21 – 28, March – April, 2016. 0009-3092/16/5202–0149  2016 Springer Science+Business Media New York The distinctive properties of products of hydrothermal transformations of organic matter of bituminous rocks from Upper Devonian Domanik carbonate-argillaceous deposits of the Romashkino field, which were formed due to generation of bituminous components present in the rock in free state as well as of hydrocarbons and high-molecular heteroatomic compounds in the insoluble kerogen degradation process, are determined. It is shown that, among the n-alkanes, homologs with even number of carbon atoms dominate in the kerogen degradation products and that the asphaltenes contain two solid disperse phases differing in aromaticity, heteroatom, microelement and vanadium porphyry complex contents, free radical concentration, and solubility in organic solvents. The sequence of leaching out of hydrocarbons, heteroatomic compounds, resins, and asphaltenes from the rock by vapor-gas mixture is studied. The migration and adsorption capacity of n-alkanes with even and odd numbers of carbon atoms is shown to be diverse. Changes in the microstructure of Domanik rocks upon hydrothermal transformations are studied. Keywords: Domanik rock, carbonate-argillaceous rock, organic matter, kerogen, heavy crude oil, hydrothermal transformations. Increased interest in high-carbon rocks rich in organic matter arises from the large reserves of these materials and the prospect of shale oil extraction [1-9]. An analog of the shale strata in Russia is the Bazhenov DOI 10.1007/s10553-016-0685-2