Hydrogen-Bonding Studies of Pyridine and o-Phenylphenol with Coal Asphaltenes by Multi-nuclei Magnetic Resonance
| Autor: | R. A. Friedel, Frank K. Schweighardt, H. L. Retcofsky |
|---|---|
| Rok vydání: | 1976 |
| Předmět: |
Proton
Hydrogen bond Chemistry 010401 analytical chemistry 01 natural sciences 0104 chemical sciences 010309 optics NMR spectra database chemistry.chemical_compound 0103 physical sciences Pyridine Proton NMR Physical chemistry Molecule Instrumentation Spectroscopy Equilibrium constant Asphaltene Nuclear chemistry |
| Zdroj: | Applied Spectroscopy. 30:291-295 |
| ISSN: | 1943-3530 0003-7028 |
| Popis: | Proton, carbon, and nitrogen-14 nuclear magnetic resonance studies are reported of hydrogen bonding between the OH proton of o-phenylphenol (OPP) and the nitrogen electron donor of pyridine (Py). Data are also reported on the hydrogen bonding of the acid and base components of coal-derived asphaltenes with the model system. Determination was made of the equilibrium constant of the 1:1 complex between OPP and Py from the proton NMR studies. Qualitative results are reported from the 13C and 14N studies of the model system (OPP-Py) with the individual asphaltene fractions. Because of the recent renewed interest in coal liquefaction this investigation may provide a starting point for future research. |
| Databáze: | OpenAIRE |
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