TY JOUR TI Oxidation of oil shale kerogen by alkaline potassium permanganate KW kerogen KW oil shales KW oxidation by potassium permanganate KW structure of organic matter KW IR spectroscopy KW carboxylic and dicarboxylic acids JO Vestnik of geosciences AU Burdelnaya, N.S. AU Sennikova, Y.D. AU Bushnev, D.A. PY 2024 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"