Raw data of CO2 hydrate equilibrium conditions measurements in the CO2 – H2O – dimethyl sulfoxide system

Published: 9 May 2022| Version 1 | DOI: 10.17632/5xjdgvjb84.1
Anton Semenov


The raw data is a file with the .dat extension for each separate experiment, containing the values of time, temperature (°C) and gauge pressure (bar) in the autoclave, obtained by measuring the equilibrium conditions for the carbon dioxide hydrate formation in the CO2 - H2O - dimethyl sulfoxide (DMSO) system at concentrations of organic solute in the aqueous phase from 0 to 50 mass%. The raw data are associated with the articles: [1] Semenov, A., Mendgaziev, R., Stoporev, A., Istomin, V., Sergeeva, D., Tulegenov, T., Vinokurov, V., 2022. Dataset for the dimethyl sulfoxide as a novel thermodynamic inhibitor of carbon dioxide hydrate formation. Data Br. In Press. [2] A.P. Semenov, R.I. Mendgaziev, A.S. Stoporev, V.A. Istomin, D. V. Sergeeva, T.B. Tulegenov, V.A. Vinokurov, Dimethyl sulfoxide as a novel thermodynamic inhibitor of carbon dioxide hydrate formation, Chem. Eng. Sci. 255 (2022) 117670. https://doi.org/10.1016/j.ces.2022.117670. The point number in the file name for each experiment corresponds to the point number in Table 2 (column III) of ref. [1].


Steps to reproduce

Convert gauge pressure (bar) to absolute pressure (bar) by adding 1 to all gauge pressures. Plot the dependence of the pressure in the autoclave on the temperature (Temperature (ーC) Bath). By approximating the segments before and after hydrate decomposition with straight lines, determine the coordinates of the endpoint of the CO2 hydrate dissociation, in which there is an abrupt decrease in the slope of the dependence of pressure on temperature during slow heating (0.1 K/h) and intensive stirring of the system (600 rpm). The obtained values of the equilibrium temperature (°C) are converted to °K, the values of the equilibrium absolute pressure (bar) are converted to MPa.


Rossijskij gosudarstvennyj universitet nefti i gaza imeni I M Gubkina


Physical Chemistry, Gas Hydrate, Phase Equilibrium Experimental Data