Error message

  • Deprecated function: Unparenthesized `a ? b : c ? d : e` is deprecated. Use either `(a ? b : c) ? d : e` or `a ? b : (c ? d : e)` in include_once() (line 1439 of /home/science2016/public_html/includes/bootstrap.inc).
  • Deprecated function: Array and string offset access syntax with curly braces is deprecated in include_once() (line 3557 of /home/science2016/public_html/includes/bootstrap.inc).

The influence of the solveny medium on the aggregation of asphaltene macromolecules and determination of their molar mass

Antonieta Middea, Marisa Bezerra de Mello Monte and Elizabete Fernandes Lucas
DOI: 
https://doi.org/10.23939/chcht02.02.091
AttachmentSize
PDF icon full_text.pdf1.72 MB

Keywords:

Abstract: 
The formation of aggregates of a fraction of asphaltenes extracted from Brazilian crude oil was investigated by measuring the interfacial tension and kinematic viscosity of their solutions prepared in different solvents. The interfacial tension results indicate the existence of critical micelle concentration (CMC) levels of the asphaltenes in solvents with solubility parameters sufficiently different from those of the asphaltene tested. The kinematic viscosity measures revealed the formation of aggregates at concentrations above the CMC. The interfacial tension measures of asphaltenes in organic solutions, although infrequently mentioned in the literature, were used to calculate the molar mass, permitting the comparison of various molar masses attributed to the asphaltenes in the form of aggregates.
References: 

[1] Hong E. and Watkinson P.: Fuel, 2004; 83, 1881.
https://doi.org/10.1016/j.fuel.2003.09.026

[2] Trejo F., Centeno G. and Ancheyta J.: Fuel, 2004, 83, 2169.
https://doi.org/10.1016/j.fuel.2004.06.008

[3] McLean J. and Kilpatrick P.: J. Colloid Interface Sci., 1997, 189, 242.
https://doi.org/10.1006/jcis.1997.4807

[4] Andersen S., Rio J., Khvostitchenko D., Shakir S. and Galeana C.: Langmuir, 2001, 17, 307.
https://doi.org/10.1021/la000871m

[5] Spiecker P., Gawrys K. and Kilpatrick P.: J. Colloid Interface Sci., 2003, 267, 178.
https://doi.org/10.1016/S0021-9797(03)00641-6

[6] Speight J., Wernick D., Gould K., Overfield R., Rao B. and Savage D.: Revue de L'Institut Francais du Petrole, 1985, 40, 51.
https://doi.org/10.2516/ogst:1985004

[7] Moschopedis S., Fryer I. and Speight I.: Fuel, 1976, 55, 227.
https://doi.org/10.1016/0016-2361(76)90093-4

[8] Monte M., Coelho R. and Middea A.: Petrol. Sci. & Techn., 2004, 22 (7&8), 991.
https://doi.org/10.1081/LFT-120038723

[9] Strausz O., Peng P. and Murgich J.: Energy & Fuels, 2002, 16, 809.
https://doi.org/10.1021/ef0002795

[10] Sheu E.: J. Phys. & Condensed Matter, 1996, 8, A121.
https://doi.org/10.1088/0953-8984/8/25A/009

[11] Priyanto S., Mansoori G. and Suwono A.: Chem. Eng. Sci., 2001, 56, 6933.
https://doi.org/10.1016/S0009-2509(01)00337-2

[12] Yudin I., Nikolaenko G., Gorodetskii E., Markhashov E., Agayan V., Anisimov M. and Sengers J.: Physica A, 1998, 251, 235.
https://doi.org/10.1016/S0378-4371(97)00607-9

[13] Yarranton H., Alboudwarej H. and Jakher R.: Ind. & Eng. Chem. Res., 2000, 39, 2916.
https://doi.org/10.1021/ie000073r

[14] Barton A.: Handbook of Solubility Parameters, 1983.

[15] Calema V., Iwanski P., Nali M., Scotti R. and Montanari L.: Energy & Fuels, 1995, 9, 225.
https://doi.org/10.1021/ef00050a004

[16] Dehkissia S., Larachi F., Rodrigue D. and Chornet E.: Fuel, 2004, 83, 2157.
https://doi.org/10.1016/j.fuel.2004.06.014

[17] Sousa M., Oliveira G., Lucas E. and Gonzalez G.: Progress in Colloid and Polymer Science, 2004, 128, 283.
https://doi.org/10.1007/b97114

[18] Lide D.R.: Handbook of Chemistry and Physics. 75th ed.