Experimental studies on hydrogen hydrate with tetrahydrofuran by differential scanning calorimeter and in-situ Raman

Abstract

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A novel stirred microcalorimetric cell for DSC measurements applied to the study of ice slurries and clathrate hydrates

“…Calorimetry techniques are essential for investigating the thermodynamic properties of hydrates and obtaining phase equilibrium data (Sum et al, 2009). A huge number of articles can be found in the literature concerning the use of DSC and -DSC techniques applied to gas hydrates, such as the study of hydrate nucleation (Davies et al, 2009), effect of additives (Daraboina et al, 2011), cold storage in air-conditioning systems (Li et al, 2010), gas separation (Zhong et al, 2018), and hydrogen storage (Cai et al, 2019).…”

The potential of hydrogen hydrate as a future hydrogen storage medium

“…Cai et al. ( Cai et al, 2019 ) and Veluswamy et al. ( Veluswamy and Linga, 2013 ) studied the effect of simultaneous change in temperature and pressure in a system with THF promotor.…”

“…Cai et al. ( Cai et al, 2019 ) compared the hydrate dissociation process in hydrate systems prepared in fresh water and memory water. The results indicated that memory effect has no significant influence on thermal state of hydrate.…”

“…For example, every promotor works the best at specific temperatures or pressures and variation in temperature and/or pressure of the system can significantly affect the effectiveness of the promotor; hence, not a single promotor can be recommended for all conditions. Cai et al (Cai et al, 2019) and Veluswamy et al (Veluswamy and Linga, 2013) studied the effect of simultaneous change in temperature and pressure in a system with THF promotor. They reported that decreasing the temperature from 278 K to 273 K while increasing the pressure from 10.8 MPa to 14.3 MPa resulted in an overall enhancement of 21% in the formation rate.…”

Molecular Insights into Cage Occupancy of Hydrogen Hydrate: A Computational Study

“…On the other hand, high pressures are needed to form pure hydrogen hydrates, which is not economically feasible and leads to the research of the mixed hydrogen hydrates at lower pressures [28][29][30][31][32][33]. For example, Florusse et al [34] suggested that tetrahydrofuran can stabilize the hydrogen hydrates at 5.0 MPa and 279.6 K, and Lee's group [7] reported that the storage capacity is about 4.0 wt% at 12 MPa for the binary hydrogen hydrate.…”