Effect of gamma-radiation on structure, reactivity and the process of liquefaction of brown coals

Abstract

Publisher Summary This chapter discusses the effect of radiation on structure, properties, and the process of liquefaction of the brown coals of Borodinsky and Berezovsky open pits of Kansk–Achinsk basin by Electron Magnetic Resonance (EMR) spectroscopy and infrared, thermal, and chemical analysis. These coals are different by the distribution of elements over structural groups, organic–mineral structures, and thermal destruction characteristics. These coals are proximate for petrographic, ultimate, and volatile matter content. The yield of oils and the benzene extract percentage increase under radiation. The extent of coal organic matter (COM) conversion and the yield of total liquid products (TLP) per paste organic matter (POM) decrease under hydrogenation without a presence of a catalyst of radiated paste. Preliminary radiation of the paste leads to the change of hydrogenation liquid products. Gamma-radiation activates both coals and their mixtures with paste medium. Catalytic hydrogenation of the radiated pastes leads to the increased extent of COM conversion, yield of liquid products, and percentage of light fractions in them.