Donald E. Rogers

TL;DR: In this article, the chemical and thermal responses of six dried coals on exposure to a flow of oxygen or air were studied using isothermal differential thermal analysis (DTA) and temperature-programmed in situ diffuse reflectance infrared Fourier Transform spectroscopy (DRIFTS).

TL;DR: In this article, the inherent cations of Victorian brown coals have been exchanged for iron by treatment with solutions of iron salts, and the increase in yields compared with non-catalysed experiments results mainly from increased production of asphaltenes.

TL;DR: Differential thermal analyses of reactions between dried low rank coals and oxygen at temperatures of 30, 60, 90, 120, 150 and 180 °C show an immediate, sharp exothermic response as mentioned in this paper.

TL;DR: In this article, an examination of the changes taking place in the mineral and other inorganic matter contained in two Australian brown coals as a result of hydroliquefaction of the coal in tetralin and hydrogen at 25 MPa and 395 °C was made.

TL;DR: In this paper, the authors compared several New Zealand lignites and three other coals in hydrogen at a pressure of 8.0 MPa and found that the reaction of lignite with tetrahydronaphthalene, in the absence of hydrogen, has been shown to be endothermic; a factor of interest in the context of donorsolvent hydroliquefaction facilities.