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Skiba SS, Larionov EG, Manakov AY, et al. Investigation of hydrate formation in the system H2-CH4-H2O at a pressure up to 250 MPa. J Phys Chem B. 2007;111(38):11214-20doi: 10.1021/jp072821x.
Skiba, S. S., Larionov, E. G., Manakov, A. Y., Kolesov, B. A., & Kosyakov, V. I. (2007). Investigation of hydrate formation in the system H2-CH4-H2O at a pressure up to 250 MPa. The journal of physical chemistry. B, 111(38), 11214-20. https://doi.org/10.1021/jp072821x
Skiba, Sergei S, et al. "Investigation of hydrate formation in the system H2-CH4-H2O at a pressure up to 250 MPa." The journal of physical chemistry. B vol. 111,38 (2007): 11214-20. doi: https://doi.org/10.1021/jp072821x
Skiba SS, Larionov EG, Manakov AY, Kolesov BA, Kosyakov VI. Investigation of hydrate formation in the system H2-CH4-H2O at a pressure up to 250 MPa. J Phys Chem B. 2007 Sep 27;111(38):11214-20. doi: 10.1021/jp072821x. Epub 2007 Sep 06. PMID: 17803298.
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J Phys Chem B. 2007 Sep 27;111(38):11214-20. doi: 10.1021/jp072821x. Epub 2007 Sep 06.

Investigation of hydrate formation in the system H2-CH4-H2O at a pressure up to 250 MPa.

The journal of physical chemistry. B

Sergei S Skiba, Eduard G Larionov, Andrey Y Manakov, Boris A Kolesov, Viktor I Kosyakov

Affiliations

  1. Nikolaev Institute of Inorganic Chemistry SB RAS, Akad. Lavrentiev Avenue 3, Novosibirsk 630090, Russian Federation.

PMID: 17803298 DOI: 10.1021/jp072821x

Abstract

Phase equilibria in the system H2-CH4-H2O are investigated by means of differential thermal analysis within hydrogen concentration range 0-70 mol % and at a pressure up to 250 MPa. All the experiments were carried out under the conditions of gas excess. With an increase in hydrogen concentration in the initial gas mixture, decomposition temperature of the formed hydrates decreased. X-ray diffraction patterns and Raman spectra of the quenched hydrate samples obtained at a pressure of 20 MPA from a gas mixture containing 40 mol % hydrogen were recorded. It turned out that the hydrate has cubic structure I under these conditions. The Raman spectra showed that hydrogen molecules are not detected in the hydrate within the sensitivity of the method, that is, almost pure methane hydrate is formed. The general view of the phase diagram of the investigated system is proposed. A thermodynamic model was proposed to explain a decrease in hydrate decomposition temperature in the system with an increase in the concentration of hydrogen in the initial mixture.

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