Skip to main content
SpringerLink
Log in

Influence of molecular association on the solubility of methylxanthines in supercritical solvent CO2–methanol

  • Published:
Russian Journal of Physical Chemistry B Aims and scope Submit manuscript

Abstract

Analysis of the experimental data on the solubility of methylxanthines (theophylline and theobromine) in supercritical (SC) solvent CO2–methanol at various concentrations of methanol within the framework of the ASL model (Associated Solution + Lattice) based on molecular association theory and the simple lattice model is presented. Hetero-association of methylxanthines with the molecules of methanol is studied by means of 1H NMR spectroscopy at 313 K. The contribution of molecular association to the solubility of methylxanthines in the mixed SC solvent CO2–methanol is analyzed. It is shown that the presence of NH group in the molecule of methylxanthine, when passing from caffeine to theophylline or theobromine, leads to an increase of the contribution of the component related to molecular association to solubility.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. M. Johannsen and G. Brunner, J. Chem. Eng. Data 40, 431 (1995).

    Article  CAS  Google Scholar 

  2. U. Kopcak and R. S. Mohamed, J. Supercrit. Fluids 34, 209 (2005).

    Article  CAS  Google Scholar 

  3. S. N. Reddy and G. Madras, Fluid Phase Equilib. 310, 207 (2011).

    Article  CAS  Google Scholar 

  4. M. Yu. Nikiforov, V. A. Golubev, G. M. Mamardashvili, and G. A. Alper, J. Struct. Chem. 52, 304 (2011).

    Article  CAS  Google Scholar 

  5. T. Tassaing, J.-C. Soetens, I. Vyalov, M. Kiselev, and A. Idrissi, J. Chem. Phys. 133, 214505 (2010).

    Article  CAS  Google Scholar 

  6. D. S. Bulgarevich, T. Sako, T. Sugeta, K. Otake, Y. Takebayashi, C. Kamizawa, Y. Horikawa, and M. Kato, Ind. Eng. Chem. Res. 41, 2074 (2002).

    Article  CAS  Google Scholar 

  7. V. A. Durov, in Concentrated and Saturated Solutions, Ed. by A. M. Kutepov (Nauka, Moscow, 2002) [in Russian].

  8. M. Yu. Nikiforov, E. D. Totchasov, and G. A. Alper, Russ. J. Phys. Chem. A 81, 1623 (2007).

    Article  Google Scholar 

  9. M. Yu. Nikoforov, E. D. Totchasov, and G. A. Alper, J. Struct. Chem. 48, 474 (2007).

    Article  Google Scholar 

  10. V. A. Golubev, M. Yu. Nikiforov, and G. A. Alper, Russ. J. Phys. Chem. B 9, 1054 (2015).

    Article  CAS  Google Scholar 

  11. A. Gordon and R. Ford, The Chemist’s Companion, A Handbook of Practical Data. Techniques and References (Wiley, New York, 1972).

    Google Scholar 

  12. M. Maiwald, H. Li, T. Schnabel, K. Braun, and H. Hasse, J. Supercrit. Fluids 43, 267 (2007).

    Article  CAS  Google Scholar 

  13. V. Brandani and F. Evangelista, Fluid Phase Equilib. 17, 281 (1984).

    Article  CAS  Google Scholar 

  14. J. H. Vera, S. G. Sayegh, and G. A. Ratcliff, Fluid Phase Equilib. 1, 113 (1977).

    Article  CAS  Google Scholar 

  15. A. J. Bondi, Phys. Chem. 68, 441 (1964).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo, 153045, Russia

    V. A. Golubev, M. Yu. Nikiforov, G. A. Alper & R. D. Oparin

Authors
  1. V. A. Golubev
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. Yu. Nikiforov
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. G. A. Alper
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. R. D. Oparin
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to V. A. Golubev.

Additional information

Original Russian Text © V.A. Golubev, M.Yu. Nikiforov, G.A. Alper, R.D. Oparin, 2015, published in Sverkhkriticheskie Flyuidy. Teoriya i Praktika, 2015, Vol. 35, No. 3, pp. 63–69.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Golubev, V.A., Nikiforov, M.Y., Alper, G.A. et al. Influence of molecular association on the solubility of methylxanthines in supercritical solvent CO2–methanol. Russ. J. Phys. Chem. B 10, 1166–1170 (2016). https://doi.org/10.1134/S1990793116070083

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S1990793116070083

Keywords

Search

Navigation