David J. Harris

TL;DR: In this paper, a technique is presented to obtain the maximum structural information on carbonaceous materials from their X-ray scattering curves in the middle and high range of scattering angle, which is based on qualitative observations, in which only two types of carbon structures including crystalline carbon and amorphous carbon are considered, is suggested.

TL;DR: In this article, the effect of operating pressure on coal reactions has been investigated and it has been shown that higher reactant pressure enhances coal combustion and gasification reaction rate, which can be understood by an adsorption-desorption mechanism.

TL;DR: In this article, two processes, thermal treatment and oxidation, were separated for a fundamental study of structural evolution during pyrolysis and combustion, as well as for the study of the influence of such evolution on char reactivity.

TL;DR: In this article, the intrinsic reaction rates of two Australian coal chars (made under laboratory conditions) with O2, CO2, and H2O at increased pressures (up to 30 atm) have been made using a pressurized thermogravimetric analyzer.

TL;DR: In this article, the authors present data generated for the reaction of coal chars with mixtures of CO2 and H2O at high pressures, to determine how existing pure-gas rate data can be applied to more realistic gasification systems.