Abstract
Changes in the physical structure of Alberta hvCb coal upon partial solubilization in tetralin, Athabasca bitumen and the oil fraction from the bitumen were determined from gas adsorption measurements, mercury porosimetry and petrographic examination. It was shown that solubilization of the coal generated new micropores, while the macropore structure was degraded. Resistance to extraction due to pore structure is considered to be probably of minor importance. The experimental results suggest that low molecular weight material in the coal was preferentially liquefied.
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