Phase separated structure of solvent swollen coal was characterized thorough its property of proton flip-flop spin diffusion. It is shown that the fashion of coal swelling is non-uniform on a segmental scale and a microscopic phase separation does take place on a scale from several to 20 nm even in good solvents like pyridine.
|Number of pages||4|
|Journal||ACS Division of Fuel Chemistry, Preprints|
|Publication status||Published - Dec 1 1999|
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