Nitrogen chemical structure in petroleum asphaltene and coal by X-ray absorption spectroscopy
β Scribed by Sudipa Mitra Kirtley; Oliver C. Mullins; Jan van Elp; Stephen P. Cramer
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 335 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0016-2361
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Asphaltene samples obtained from bitumen processed at three Indian refineries were characterized for chemical composition and structure by nuclear magnetic resonance (n.m.r.) spectroscopy and X-ray diffractometry (XRD). The average structural parameters were obtained by combined 1H, 13C and DEPT spe
Germany) [\*\*] We thank the staff of the synchrotron radiation facility, Daresbury for their help and support and EPSRC for generous funding. H.W. thanks the DFG for financial support.
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