Hypothetical average structures of two coal liquid asphaltenes from solid state 13 C nuclear magnetic resonance and 1 H nuclear magnetic resonance data |
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| Authors: | Victoria A. Weinberg T.F. Yen P.DuBois Murphy B.C. Gerstein |
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| Affiliation: | Department of Chemical Engineering, University of Southern California, University Park, Los Angeles, CA 90007, U.S.A.;Ames Laboratory, DOE and Department of chemistry, Iowa State University, Ames, IA 50011, U.S.A. |
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| Abstract: | The hypothetical average structures of two coal liquid asphaltenes were determined using solid state 13 C NMR and 1 H NMR data. From the 1 H NMR data average molecular structural parameters were obtained using the Brown-Ladner method to get a general average structure. From the solid state 13 C NMR data, estimations of percentages of tertiary and quaternary aromatic carbons and secondary/tertiary and primary/quaternary aliphatic carbons were made. The hypothetical average molecules obtained agreed closely with experimental results. |
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