Temperature dependence of 1H n.m.r. spec
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Helda de Lopez; Tetsuro Yokono; Naoki Takahashi; Yuzo Sanada
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Article
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1988
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Elsevier Science
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English
โ 345 KB
Coal tar and petroleum pitches and their solvent fractions were studied by high temperature 'H n.m.r. The chemical changes and molecular motion associated with the pyrolysis have been related to the size and shape of optical textures of the resultant cokes.