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UPDATED 1 Sept: The EI library in London is temporarily closed to the public, as a precautionary measure in light of the ongoing COVID-19 situation. The Knowledge Service will still be answering email queries via email , or via live chats during working hours (09:15-17:00 GMT). Our e-library is always open for members here: eLibrary , for full-text access to over 200 e-books and millions of articles. Thank you for your patience.
Characterization of the structure of Saudi crude asphaltenes by X-ray diffraction. J.W. Shirokoff, M.N. Siddiqui and M.F. Ali. Energy and Fuels, May/June 1997, 11(3), 561--565.
The aromaticity and crystallite parameters of the asphaltenes were determined. The results supported the general structure of condensed aromatic sheets with naphthenic and alkyl systems on the periphery. Aromaticity increased with increasing API gravity. Results are compared with NMR studies and high performance gel permeation chromatography of the same asphaltenes. 14 refs.
Abstract details
Journal title: Energy and Fuels
Keywords: Chemical and physical properties
Subjects: Natural and physical sciences, Chemical sciences, Chemical and petrochemical, Chromatography
