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Titolo:
Refractive index measurements of diluted bitumen solutions
Autore:
Taylor, SD; Czarnecki, J; Masliyah, J;
Indirizzi:
Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada Univ Alberta Edmonton AB Canada T6G 2G6 ngn, Edmonton, AB T6G 2G6, Canada Syncrude Canada Ltd, Edmonton Res Ctr, Edmonton, AB T6N 1H4, Canada Syncrude Canada Ltd Edmonton AB Canada T6N 1H4 monton, AB T6N 1H4, Canada
Titolo Testata:
FUEL
fascicolo: 14, volume: 80, anno: 2001,
pagine: 2013 - 2018
SICI:
0016-2361(200111)80:14<2013:RIMODB>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
ASPHALTENE PRECIPITATION; SOLUBILITY; ONSET; CRUDE;
Keywords:
refractive index; bitumen; asphaltenes; maltenes;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Masliyah, J Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada Univ Alberta Edmonton AB Canada T6G 2G6 n, AB T6G 2G6, Canada
Citazione:
S.D. Taylor et al., "Refractive index measurements of diluted bitumen solutions", FUEL, 80(14), 2001, pp. 2013-2018

Abstract

The objective of this study was to obtain estimates for the refractive indices of bitumen, maltenes, and asphaltenes. Refractive index measurements performed on various bitumen-solvent mixtures were analyzed using a mixing model that related the refractive index of an ideal mixture to the refractive indices of the pure components of the mixture. Measurements could only beobtained for bitumen-solvent mixtures ranging in bitumen volume fraction from 0 to about 0.50. Extrapolation to a volume fraction of unity provided estimates of 1.584, 1.571 and 1.708 for the refractive indices of bitumen, maltenes, and asphaltenes, respectively. A precipitating solvent was also used to show that the onset of asphaltene precipitation could be detected from refractive index measurements. For a mixture of heptane and bitumen, the onset of asphaltene precipitation appeared to occur at a bitumen volume fraction of about 0.32. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 05/12/20 alle ore 01:24:32