Raw data from measurements of gas hydrate equilibrium conditions in the CO2–H2O and CO2–H2O–dimethyl sulfoxide systems

The folder named 'Raw data CO2+H2O+DMSO' contains the raw data for the measurements of the hydrate equilibrium conditions in the carbon dioxide–water and carbon dioxide–water–dimethyl sulfoxide (DMSO) system. The three-phase vapor–aqueous solution–gas hydrate equilibrium for CO2–H2O and CO2–H2O–DMSO systems was measured at various pressures and temperatures (243–283 K, 1–4.5 MPa, 0–50% DMSO) and the results are described in [1,2]. The non-invariant four-phase vapor–aqueous solution–ice–gas hydrate equilibrium for the CO2–H2O system was directly measured for the first time (T = 271.60 ± 0.01 K and P = 1.044 ± 0.002 MPa, lower quadruple point Q1, see [3] for details).
Forty-six points of three-phase vapor–aqueous solution–gas hydrate equilibrium were measured. For each one there is a separate file with the extension .dat (or .xlsx) containing the values of time, temperature (°C) and gauge pressure (bar), stirrer speed (rpm) in the GHA350 autoclave. The column labeled 'Temperature (ｰC) Bath' contains the measured temperature values in the autoclave at each time point. The file name represents the point number, which is from Table 2 of the data paper [2]. Six independent measurements of the four-phase vapor–aqueous solution–ice–gas hydrate equilibrium were made.

The raw data is linked to the papers:
[1] Anton P. Semenov, Rais I. Mendgaziev, Andrey S. Stoporev, Vladimir A. Istomin, Daria V. Sergeeva, Timur B.Tulegenov, Vladimir A.Vinokurov (2022) Dimethyl sulfoxide as a novel thermodynamic inhibitor of carbon dioxide hydrate formation // Chemical Engineering Science, 255, 117670 DOI: 10.1016/j.ces.2022.117670
[2] Anton P. Semenov, Rais I. Mendgaziev, Andrey S. Stoporev, Vladimir A. Istomin, Daria V. Sergeeva, Timur B. Tulegenov, Vladimir A.Vinokurov (2022) Dataset for the dimethyl sulfoxide as a novel thermodynamic inhibitor of carbon dioxide hydrate formation // Data in Brief, 42, 108289 DOI: 10.1016/j.dib.2022.108289
[3] Anton Semenov, Rais Mendgaziev, Andrey Stoporev, Vladimir Istomin, Timur Tulegenov, Murtazali Yarakhmedov, Andrei Novikov, Vladimir Vinokurov (2023) Direct Measurement of the Four-Phase Equilibrium Coexistence Vapor–Aqueous Solution–Ice–Gas Hydrate in Water–Carbon Dioxide System // International Journal of Molecular Sciences, 24(11), 9321 DOI: 10.3390/ijms24119321

名为"Raw data CO2+H2O+DMSO"的文件夹，存储了二氧化碳-水体系与二氧化碳-水-二甲基亚砜（dimethyl sulfoxide, DMSO）体系的水合物平衡条件实测原始数据。针对CO₂-H₂O与CO₂-H₂O-DMSO体系的气-水溶液-气体水合物三相平衡，我们在多组压力与温度条件（243~283 K、1~4.5 MPa、DMSO浓度0~50%）下完成了测定，相关研究结果详见文献[1,2]。本研究首次直接测定了CO₂-H₂O体系的非不变气-水溶液-冰-气体水合物四相平衡，其对应的低压四重点Q1参数为T=271.60±0.01 K、P=1.044±0.002 MPa，详细信息请参见文献[3]。

本次共计完成46组气-水溶液-气体水合物三相平衡测定点。每组测定点对应一个独立数据文件，文件扩展名为.dat（或.xlsx），文件内记录了GHA350高压釜内的时间、温度（单位：℃）、表压（单位：bar）以及搅拌速率（单位：rpm）等参数。其中标注为"Temperature (℃) Bath"的列，对应每个时间点下高压釜内的实测温度值。文件名对应测定点编号，该编号取自文献[2]的数据论文表2。此外，本研究完成了6组气-水溶液-冰-气体水合物四相平衡独立测定。

本原始数据集关联的学术论文如下：
[1] Anton P. Semenov、Rais I. Mendgaziev、Andrey S. Stoporev等，2022年，《二甲基亚砜作为二氧化碳水合物生成的新型热力学抑制剂》，载于《化学工程科学（Chemical Engineering Science）》，第255卷，文章编号117670，DOI: 10.1016/j.ces.2022.117670
[2] Anton P. Semenov、Rais I. Mendgaziev、Andrey S. Stoporev等，2022年，《二氧化碳水合物生成新型热力学抑制剂二甲基亚砜相关数据集》，载于《数据简报（Data in Brief）》，第42卷，文章编号108289，DOI: 10.1016/j.dib.2022.108289
[3] Anton Semenov、Rais Mendgaziev、Andrey Stoporev等，2023年，《水-二氧化碳体系中气-水溶液-冰-气体水合物四相平衡共存的直接测定》，载于《国际分子科学杂志（International Journal of Molecular Sciences）》，第24卷第11期，文章编号9321，DOI: 10.3390/ijms24119321