Abstract

Dynamic light scattering with an original optical scheme has been used for the investigation of opaque (strongly light-absorbing) asphaltene colloids in crude oils and hydrocarbon mixtures. Diffusion-limited aggregation and reaction-limited aggregation as well as a crossover between these two regimes have been observed. A simple interpolation for the crossover kinetics is proposed. Asphaltene colloidal structures, originally persisting in crude oils, have been detected. Addition of a precipitant above a threshold induces asphaltene aggregation. Depending on the nature of the precipitant, different crude oils respond differently on its addition: (a) exponential-in-time growth of aggregates to huge flocks or (b) fast formation of stable-in-size particles.

© 2001 Optical Society of America

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    [CrossRef]
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1998 (2)

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, V. I. Kosov, V. R. Melikyan, E. L. Markhashov, D. Frot, Y. Briolant, “Mechanism of asphaltene aggregation in toluene–heptane mixtures,” J. Pet. Sci. Eng. 20, 297–301 (1998).
[CrossRef]

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, E. L. Markhashov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “Crossover kinetics of asphaltene aggregation in hydrocarbon solutions,” Physica A 251, 235–244 (1998).
[CrossRef]

1997 (1)

I. K. Yudin, G. L. Nikolaenko, V. I. Kosov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “A compact photon-correlation spectrometer for research and education,” Int. J. Thermophys. 18, 1237–1248 (1997).
[CrossRef]

1990 (2)

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal reaction-limited colloid aggregation,” Phys. Rev. A 41, 2005–2020 (1990).
[CrossRef] [PubMed]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal diffusion-limited colloid aggregation,” J. Phys. Condens. Matter 2, 3093–3113 (1990).
[CrossRef]

1989 (3)

J. S. Huang, J. Sung, M. Eisner, S. C. Moss, J. Gallas, “The fractal structure and the dynamics of aggregation of synthetic melanin in low pH aqueous solutions,” J. Chem. Phys. 90, 25–29 (1989).
[CrossRef]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality in colloid aggregation,” Nature 339(6223), 360–362 (1989).

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality of fractal aggregates probed by light scattering,” Proc. R. Soc. London Ser. A 423(1864), 71–87 (1989).

1987 (3)

P. Wiltzius, “Hydrodynamic behavior of fractal aggregates,” Phys. Rev. Lett. 58, 710–713 (1987).
[CrossRef] [PubMed]

Z. Y. Chen, P. Meakin, J. M. Deutch, “Comment on ‘Hydrodynamic behavior of fractal aggregates,’ ” Phys. Rev. Lett. 59, 2121 (1987).
[CrossRef]

P. N. Pusey, J. G. Rarity, R. Klein, D. A. Weitz, “Comment on ‘Hydrodynamic behavior of fractal aggregates,’ ” Phys. Rev. Lett. 59, 2122 (1987).
[CrossRef]

1986 (1)

D. A. Weitz, M. Y. Lin, “Dynamic scaling of cluster-mass distributions in kinetic colloid aggregation,” Phys. Rev. Lett. 57, 2037–2040 (1986).
[CrossRef] [PubMed]

1985 (1)

D. A. Weitz, J. S. Huang, M. Y. Lin, J. Sung, “Limits of the fractal dimension for irreversible kinetic aggregation of gold colloids,” Phys. Rev. Lett. 54, 1416–1419 (1985).
[CrossRef] [PubMed]

Agayan, V. A.

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, E. L. Markhashov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “Crossover kinetics of asphaltene aggregation in hydrocarbon solutions,” Physica A 251, 235–244 (1998).
[CrossRef]

I. K. Yudin, G. L. Nikolaenko, V. I. Kosov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “A compact photon-correlation spectrometer for research and education,” Int. J. Thermophys. 18, 1237–1248 (1997).
[CrossRef]

Anisimov, M. A.

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, E. L. Markhashov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “Crossover kinetics of asphaltene aggregation in hydrocarbon solutions,” Physica A 251, 235–244 (1998).
[CrossRef]

I. K. Yudin, G. L. Nikolaenko, V. I. Kosov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “A compact photon-correlation spectrometer for research and education,” Int. J. Thermophys. 18, 1237–1248 (1997).
[CrossRef]

I. K. Yudin, Y. G. Burya, V. A. Dechabo, E. E. Gorodetskii, V. I. Kosov, M. A. Anisimov, “Aggregation phenomena in petroleum colloids studied by dynamic light scattering,” in Photon Correlation and Scattering, Postconference Digest, Vol. 47 of OSA Trends in Optics and Photonics (Optical Society of America, Washington, D.C., 2000), pp. 30–32.

Ball, R. C.

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal diffusion-limited colloid aggregation,” J. Phys. Condens. Matter 2, 3093–3113 (1990).
[CrossRef]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal reaction-limited colloid aggregation,” Phys. Rev. A 41, 2005–2020 (1990).
[CrossRef] [PubMed]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality in colloid aggregation,” Nature 339(6223), 360–362 (1989).

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality of fractal aggregates probed by light scattering,” Proc. R. Soc. London Ser. A 423(1864), 71–87 (1989).

Briolant, Y.

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, V. I. Kosov, V. R. Melikyan, E. L. Markhashov, D. Frot, Y. Briolant, “Mechanism of asphaltene aggregation in toluene–heptane mixtures,” J. Pet. Sci. Eng. 20, 297–301 (1998).
[CrossRef]

Burya, Y. G.

I. K. Yudin, Y. G. Burya, V. A. Dechabo, E. E. Gorodetskii, V. I. Kosov, M. A. Anisimov, “Aggregation phenomena in petroleum colloids studied by dynamic light scattering,” in Photon Correlation and Scattering, Postconference Digest, Vol. 47 of OSA Trends in Optics and Photonics (Optical Society of America, Washington, D.C., 2000), pp. 30–32.

Chen, Z. Y.

Z. Y. Chen, P. Meakin, J. M. Deutch, “Comment on ‘Hydrodynamic behavior of fractal aggregates,’ ” Phys. Rev. Lett. 59, 2121 (1987).
[CrossRef]

Dechabo, V. A.

I. K. Yudin, Y. G. Burya, V. A. Dechabo, E. E. Gorodetskii, V. I. Kosov, M. A. Anisimov, “Aggregation phenomena in petroleum colloids studied by dynamic light scattering,” in Photon Correlation and Scattering, Postconference Digest, Vol. 47 of OSA Trends in Optics and Photonics (Optical Society of America, Washington, D.C., 2000), pp. 30–32.

Deutch, J. M.

Z. Y. Chen, P. Meakin, J. M. Deutch, “Comment on ‘Hydrodynamic behavior of fractal aggregates,’ ” Phys. Rev. Lett. 59, 2121 (1987).
[CrossRef]

Eisner, M.

J. S. Huang, J. Sung, M. Eisner, S. C. Moss, J. Gallas, “The fractal structure and the dynamics of aggregation of synthetic melanin in low pH aqueous solutions,” J. Chem. Phys. 90, 25–29 (1989).
[CrossRef]

Frot, D.

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, V. I. Kosov, V. R. Melikyan, E. L. Markhashov, D. Frot, Y. Briolant, “Mechanism of asphaltene aggregation in toluene–heptane mixtures,” J. Pet. Sci. Eng. 20, 297–301 (1998).
[CrossRef]

Gallas, J.

J. S. Huang, J. Sung, M. Eisner, S. C. Moss, J. Gallas, “The fractal structure and the dynamics of aggregation of synthetic melanin in low pH aqueous solutions,” J. Chem. Phys. 90, 25–29 (1989).
[CrossRef]

Gorodeskii, E. E.

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, V. I. Kosov, V. R. Melikyan, E. L. Markhashov, D. Frot, Y. Briolant, “Mechanism of asphaltene aggregation in toluene–heptane mixtures,” J. Pet. Sci. Eng. 20, 297–301 (1998).
[CrossRef]

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, E. L. Markhashov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “Crossover kinetics of asphaltene aggregation in hydrocarbon solutions,” Physica A 251, 235–244 (1998).
[CrossRef]

Gorodetskii, E. E.

I. K. Yudin, Y. G. Burya, V. A. Dechabo, E. E. Gorodetskii, V. I. Kosov, M. A. Anisimov, “Aggregation phenomena in petroleum colloids studied by dynamic light scattering,” in Photon Correlation and Scattering, Postconference Digest, Vol. 47 of OSA Trends in Optics and Photonics (Optical Society of America, Washington, D.C., 2000), pp. 30–32.

Huang, J. S.

J. S. Huang, J. Sung, M. Eisner, S. C. Moss, J. Gallas, “The fractal structure and the dynamics of aggregation of synthetic melanin in low pH aqueous solutions,” J. Chem. Phys. 90, 25–29 (1989).
[CrossRef]

D. A. Weitz, J. S. Huang, M. Y. Lin, J. Sung, “Limits of the fractal dimension for irreversible kinetic aggregation of gold colloids,” Phys. Rev. Lett. 54, 1416–1419 (1985).
[CrossRef] [PubMed]

Klein, R.

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal reaction-limited colloid aggregation,” Phys. Rev. A 41, 2005–2020 (1990).
[CrossRef] [PubMed]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal diffusion-limited colloid aggregation,” J. Phys. Condens. Matter 2, 3093–3113 (1990).
[CrossRef]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality of fractal aggregates probed by light scattering,” Proc. R. Soc. London Ser. A 423(1864), 71–87 (1989).

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality in colloid aggregation,” Nature 339(6223), 360–362 (1989).

P. N. Pusey, J. G. Rarity, R. Klein, D. A. Weitz, “Comment on ‘Hydrodynamic behavior of fractal aggregates,’ ” Phys. Rev. Lett. 59, 2122 (1987).
[CrossRef]

Kosov, V. I.

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, V. I. Kosov, V. R. Melikyan, E. L. Markhashov, D. Frot, Y. Briolant, “Mechanism of asphaltene aggregation in toluene–heptane mixtures,” J. Pet. Sci. Eng. 20, 297–301 (1998).
[CrossRef]

I. K. Yudin, G. L. Nikolaenko, V. I. Kosov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “A compact photon-correlation spectrometer for research and education,” Int. J. Thermophys. 18, 1237–1248 (1997).
[CrossRef]

I. K. Yudin, Y. G. Burya, V. A. Dechabo, E. E. Gorodetskii, V. I. Kosov, M. A. Anisimov, “Aggregation phenomena in petroleum colloids studied by dynamic light scattering,” in Photon Correlation and Scattering, Postconference Digest, Vol. 47 of OSA Trends in Optics and Photonics (Optical Society of America, Washington, D.C., 2000), pp. 30–32.

Lin, M. Y.

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal reaction-limited colloid aggregation,” Phys. Rev. A 41, 2005–2020 (1990).
[CrossRef] [PubMed]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal diffusion-limited colloid aggregation,” J. Phys. Condens. Matter 2, 3093–3113 (1990).
[CrossRef]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality of fractal aggregates probed by light scattering,” Proc. R. Soc. London Ser. A 423(1864), 71–87 (1989).

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality in colloid aggregation,” Nature 339(6223), 360–362 (1989).

D. A. Weitz, M. Y. Lin, “Dynamic scaling of cluster-mass distributions in kinetic colloid aggregation,” Phys. Rev. Lett. 57, 2037–2040 (1986).
[CrossRef] [PubMed]

D. A. Weitz, J. S. Huang, M. Y. Lin, J. Sung, “Limits of the fractal dimension for irreversible kinetic aggregation of gold colloids,” Phys. Rev. Lett. 54, 1416–1419 (1985).
[CrossRef] [PubMed]

Lindsay, H. M.

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal reaction-limited colloid aggregation,” Phys. Rev. A 41, 2005–2020 (1990).
[CrossRef] [PubMed]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal diffusion-limited colloid aggregation,” J. Phys. Condens. Matter 2, 3093–3113 (1990).
[CrossRef]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality in colloid aggregation,” Nature 339(6223), 360–362 (1989).

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality of fractal aggregates probed by light scattering,” Proc. R. Soc. London Ser. A 423(1864), 71–87 (1989).

Long, R. B.

R. B. Long, “The concept of asphaltenes,” in Chemistry of Asphaltenes, Vol. 195 of Advances in Chemistry Series, J. W. Bunger, N. C. Li, eds. (American Chemical Society, Washington, D.C., 1981), pp. 17–27.
[CrossRef]

Markhashov, E. L.

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, V. I. Kosov, V. R. Melikyan, E. L. Markhashov, D. Frot, Y. Briolant, “Mechanism of asphaltene aggregation in toluene–heptane mixtures,” J. Pet. Sci. Eng. 20, 297–301 (1998).
[CrossRef]

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, E. L. Markhashov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “Crossover kinetics of asphaltene aggregation in hydrocarbon solutions,” Physica A 251, 235–244 (1998).
[CrossRef]

Meakin, P.

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal diffusion-limited colloid aggregation,” J. Phys. Condens. Matter 2, 3093–3113 (1990).
[CrossRef]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal reaction-limited colloid aggregation,” Phys. Rev. A 41, 2005–2020 (1990).
[CrossRef] [PubMed]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality in colloid aggregation,” Nature 339(6223), 360–362 (1989).

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality of fractal aggregates probed by light scattering,” Proc. R. Soc. London Ser. A 423(1864), 71–87 (1989).

Z. Y. Chen, P. Meakin, J. M. Deutch, “Comment on ‘Hydrodynamic behavior of fractal aggregates,’ ” Phys. Rev. Lett. 59, 2121 (1987).
[CrossRef]

Melikyan, V. R.

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, V. I. Kosov, V. R. Melikyan, E. L. Markhashov, D. Frot, Y. Briolant, “Mechanism of asphaltene aggregation in toluene–heptane mixtures,” J. Pet. Sci. Eng. 20, 297–301 (1998).
[CrossRef]

Moss, S. C.

J. S. Huang, J. Sung, M. Eisner, S. C. Moss, J. Gallas, “The fractal structure and the dynamics of aggregation of synthetic melanin in low pH aqueous solutions,” J. Chem. Phys. 90, 25–29 (1989).
[CrossRef]

Nikolaenko, G. L.

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, V. I. Kosov, V. R. Melikyan, E. L. Markhashov, D. Frot, Y. Briolant, “Mechanism of asphaltene aggregation in toluene–heptane mixtures,” J. Pet. Sci. Eng. 20, 297–301 (1998).
[CrossRef]

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, E. L. Markhashov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “Crossover kinetics of asphaltene aggregation in hydrocarbon solutions,” Physica A 251, 235–244 (1998).
[CrossRef]

I. K. Yudin, G. L. Nikolaenko, V. I. Kosov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “A compact photon-correlation spectrometer for research and education,” Int. J. Thermophys. 18, 1237–1248 (1997).
[CrossRef]

Pusey, P. N.

P. N. Pusey, J. G. Rarity, R. Klein, D. A. Weitz, “Comment on ‘Hydrodynamic behavior of fractal aggregates,’ ” Phys. Rev. Lett. 59, 2122 (1987).
[CrossRef]

P. N. Pusey, R. J. A. Tough, “Particle interaction,” in Dynamic Light Scattering, R. Pecora, ed. (Plenum, New York, 1985), pp. 85–179.
[CrossRef]

Rarity, J. G.

P. N. Pusey, J. G. Rarity, R. Klein, D. A. Weitz, “Comment on ‘Hydrodynamic behavior of fractal aggregates,’ ” Phys. Rev. Lett. 59, 2122 (1987).
[CrossRef]

Sengers, J. V.

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, E. L. Markhashov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “Crossover kinetics of asphaltene aggregation in hydrocarbon solutions,” Physica A 251, 235–244 (1998).
[CrossRef]

I. K. Yudin, G. L. Nikolaenko, V. I. Kosov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “A compact photon-correlation spectrometer for research and education,” Int. J. Thermophys. 18, 1237–1248 (1997).
[CrossRef]

Sung, J.

J. S. Huang, J. Sung, M. Eisner, S. C. Moss, J. Gallas, “The fractal structure and the dynamics of aggregation of synthetic melanin in low pH aqueous solutions,” J. Chem. Phys. 90, 25–29 (1989).
[CrossRef]

D. A. Weitz, J. S. Huang, M. Y. Lin, J. Sung, “Limits of the fractal dimension for irreversible kinetic aggregation of gold colloids,” Phys. Rev. Lett. 54, 1416–1419 (1985).
[CrossRef] [PubMed]

Tough, R. J. A.

P. N. Pusey, R. J. A. Tough, “Particle interaction,” in Dynamic Light Scattering, R. Pecora, ed. (Plenum, New York, 1985), pp. 85–179.
[CrossRef]

Weitz, D. A.

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal reaction-limited colloid aggregation,” Phys. Rev. A 41, 2005–2020 (1990).
[CrossRef] [PubMed]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal diffusion-limited colloid aggregation,” J. Phys. Condens. Matter 2, 3093–3113 (1990).
[CrossRef]

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality of fractal aggregates probed by light scattering,” Proc. R. Soc. London Ser. A 423(1864), 71–87 (1989).

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality in colloid aggregation,” Nature 339(6223), 360–362 (1989).

P. N. Pusey, J. G. Rarity, R. Klein, D. A. Weitz, “Comment on ‘Hydrodynamic behavior of fractal aggregates,’ ” Phys. Rev. Lett. 59, 2122 (1987).
[CrossRef]

D. A. Weitz, M. Y. Lin, “Dynamic scaling of cluster-mass distributions in kinetic colloid aggregation,” Phys. Rev. Lett. 57, 2037–2040 (1986).
[CrossRef] [PubMed]

D. A. Weitz, J. S. Huang, M. Y. Lin, J. Sung, “Limits of the fractal dimension for irreversible kinetic aggregation of gold colloids,” Phys. Rev. Lett. 54, 1416–1419 (1985).
[CrossRef] [PubMed]

Wiltzius, P.

P. Wiltzius, “Hydrodynamic behavior of fractal aggregates,” Phys. Rev. Lett. 58, 710–713 (1987).
[CrossRef] [PubMed]

Yudin, I. K.

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, V. I. Kosov, V. R. Melikyan, E. L. Markhashov, D. Frot, Y. Briolant, “Mechanism of asphaltene aggregation in toluene–heptane mixtures,” J. Pet. Sci. Eng. 20, 297–301 (1998).
[CrossRef]

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, E. L. Markhashov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “Crossover kinetics of asphaltene aggregation in hydrocarbon solutions,” Physica A 251, 235–244 (1998).
[CrossRef]

I. K. Yudin, G. L. Nikolaenko, V. I. Kosov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “A compact photon-correlation spectrometer for research and education,” Int. J. Thermophys. 18, 1237–1248 (1997).
[CrossRef]

I. K. Yudin, Y. G. Burya, V. A. Dechabo, E. E. Gorodetskii, V. I. Kosov, M. A. Anisimov, “Aggregation phenomena in petroleum colloids studied by dynamic light scattering,” in Photon Correlation and Scattering, Postconference Digest, Vol. 47 of OSA Trends in Optics and Photonics (Optical Society of America, Washington, D.C., 2000), pp. 30–32.

Int. J. Thermophys. (1)

I. K. Yudin, G. L. Nikolaenko, V. I. Kosov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “A compact photon-correlation spectrometer for research and education,” Int. J. Thermophys. 18, 1237–1248 (1997).
[CrossRef]

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[CrossRef]

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I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, V. I. Kosov, V. R. Melikyan, E. L. Markhashov, D. Frot, Y. Briolant, “Mechanism of asphaltene aggregation in toluene–heptane mixtures,” J. Pet. Sci. Eng. 20, 297–301 (1998).
[CrossRef]

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Nature (1)

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universality in colloid aggregation,” Nature 339(6223), 360–362 (1989).

Phys. Rev. A (1)

M. Y. Lin, H. M. Lindsay, D. A. Weitz, R. C. Ball, R. Klein, P. Meakin, “Universal reaction-limited colloid aggregation,” Phys. Rev. A 41, 2005–2020 (1990).
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Physica A (1)

I. K. Yudin, G. L. Nikolaenko, E. E. Gorodeskii, E. L. Markhashov, V. A. Agayan, M. A. Anisimov, J. V. Sengers, “Crossover kinetics of asphaltene aggregation in hydrocarbon solutions,” Physica A 251, 235–244 (1998).
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[CrossRef]

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Figures (10)

Fig. 1
Fig. 1

Light-scattering geometries: (a) backscattering and (b) corner scattering.

Fig. 2
Fig. 2

Mean radius of the aggregates plotted as a function of time for initial asphaltene solutions of 1 g/l (squares), 10 g/l (circles), and 5 g/l (triangles) in toluene on adding the near-threshold amount of n-heptane.

Fig. 3
Fig. 3

Scaled mean number of particles in an aggregate plotted as a function of the scaled time t* for the DLA (dashed curve), the RLA (solid curve), and the crossover (dotted curve) in a 5-g/l asphaltene solution.

Fig. 4
Fig. 4

Viscosity of crude oil–n-heptane mixtures of SkyBlue oil (squares) and Swanson River oil (circles) at constant temperature.

Fig. 5
Fig. 5

Size of the aggregates plotted as a function of the monitoring time in Unocal’s Swanson River crude oil. The squares represent the first run, and the circles the second run.

Fig. 6
Fig. 6

Mean radius of the aggregates plotted as a function of the monitoring time in Unocal’s Swanson River oil mixtures with different precipitant concentrations: 25% n-heptane (filled squares), 18% n-heptane (filled triangles), 9% n-heptane (open diamonds), 5% n-heptane (open circles).

Fig. 7
Fig. 7

Exponential growth of the aggregation rate plotted as a function of the precipitant volume concentration for Unocal’s Swanson River oil–precipitant mixtures.

Fig. 8
Fig. 8

Mean radius of the asphaltene aggregates plotted versus the monitoring time for Unocal’s Swanson River oil with 5% by volume of the precipitant. Two dynamic processes, power-law growth and exponential growth, can clearly be seen in the double-logarithmic scale.

Fig. 9
Fig. 9

(a) Mean radius and (b) light-scattering (LS) intensity for SkyBlue oil with 44% by volume of the precipitant n-heptane plotted as a function of the monitoring time.

Fig. 10
Fig. 10

Average size of the asphaltene particles for various concentrations of the precipitant n-heptane. The squares represent small asphaltene aggregates in SkyBlue oil; the circles represent large aggregates of asphaltenes in SkyBlue oil; the triangles represent aggregates of asphaltenes in Mars A12 oil.

Tables (1)

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Table 1 Representative SARA Values for the Crude Oil Samples

Equations (7)

Equations on this page are rendered with MathJax. Learn more.

D=1/2tck2,
D=kBT/6πηR,
N=1+t/τD,  R=R01+t/τD1/df,
N=expt/τR,  R=R0 expt/τRdf,
dN/dt=N/τDγN+τR,
N-1τDγ/τR+ln N=t/τR,
τDR/R0Ddf+τRdf lnR/R0R=t.

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