2023
DOI: 10.1021/acssuschemeng.2c05655
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Experimental Study on the Mechanism of Enhanced CO2 Hydrate Generation by Thermodynamic Promoters

Abstract: CO 2 capture by hydrates is attracting worldwide research interest. In particular, the mechanisms of various additives are being actively studied. In this study, static hydrate formation experiments were performed at pressures of 2.5 and 3.5 MPa and at 0.5 °C using three thermodynamic promoters. The results revealed that 39 wt % TBAB and the CP system could enhance hydrate formation and CO 2 capture at the two experimental pressures. The same effect was observed for the THF system at 3.5 MPa, and all systems e… Show more

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Cited by 10 publications
(8 citation statements)
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“…The crystal morphology of the additive systems was denser, with stronger gas storage capacity. As per Liu et al 56 TBAB, THF, and CP significantly lower the surface tension for CO 2 hydrate formation. The decrease in surface tension indicates that these additives improve the movement of gas within the liquid phase, making it easier for CO 2 to dissolve and form hydrates more rapidly.…”
Section: Advanced Imaging Techniquessupporting
confidence: 60%
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“…The crystal morphology of the additive systems was denser, with stronger gas storage capacity. As per Liu et al 56 TBAB, THF, and CP significantly lower the surface tension for CO 2 hydrate formation. The decrease in surface tension indicates that these additives improve the movement of gas within the liquid phase, making it easier for CO 2 to dissolve and form hydrates more rapidly.…”
Section: Advanced Imaging Techniquessupporting
confidence: 60%
“…47 Thermodynamic promoters have been shown to induce a three-stage hydrate formation process: the creation of promoter hydrates, the adjustment of crystal size, and the induction of CO 2 hydrate formation. 56 Nanoparticles such as silica (SiO 2 ) have been found to enhance CO 2 storage efficiency by promoting these mechanisms. 20 Furthermore, altering the water chemistry has significant consequences on the microfabric and micromechanical properties of sediments, influencing their capacity to support hydrate formation.…”
Section: Surface Roughening (Sr)mentioning
confidence: 99%
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