Comparison of oil shales and kerogen concentrates by 13C nuclear magnetic resonance |
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| Authors: | GE Maciel LW Dennis |
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| Institution: | Department of Chemistry, Colorado State University, Fort Collins, CO 80523, U.S.A. |
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| Abstract: | Six oil shales and their kerogen concentrates have been studied using 13C CP/MAS NMR techniques to study the distribution of organic carbon species. It is found that if the aromatic and aliphatic regions are divided at about 80 or 100 ppm, the apparent aromaticities of a raw shale and its kerogen concentrate are in good agreement. The presence of oxygen-substituted carbons in the raw shales and their depletion in the kerogen concentrates are observed and discussed. |
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| Keywords: | Author to whom correspondence regarding this article should be addressed |
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