Abstract
AbstractThe thermal decomposition of Colorado oil shale was studied at subpyrolysis temperatures, 533 to 611 K, as part of an investigation of rates of supercritical extraction. Thermal degradation followed by solution in the solvent is a possible, partial explanation for the enhanced solubility at supercritical conditions for a complex mixture such as kerogen.In the region of the critical temperature of toluene, up to 26% of the kerogen in the original shale was converted by thermal reactions to gases and soluble (in toluene at 298 K and 101 kPa) products. The kinetics of the decomposition of the insoluble organics in shale could be explained by a combination of series and parallel reactions.
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