Advanced pre-combustion CO2 capture by clathrate hydrate formation with water-to-gas molar ratio optimization

Perspectives on facilitating natural gas and hydrogen storage in clathrate hydrates under a static system

“…[33][34][35][36][37][38] Depending on the sizes and properties of guest molecules, hydrates of different crystal structures are formed, and the well-known structures include structure I (sI), structure II (sII), and structure H (sH). 39,40 While the initial studies of hydrates were related to harvesting NG hydrates from nature [41][42][43][44] or inhibiting hydrate formation in the delivery systems, [45][46][47][48][49][50][51][52] their unique physicochemical properties have led to the artificial synthesis of hydrates for various industrial applications, including gas separation, [53][54][55][56][57][58] desalination, [59][60][61] cold energy storage, [62][63][64] carbon sequestration, [65][66][67] and gas storage. [68][69][70][71][72] In particular, hydratebased gas storage systems have garnered significant attention as potential replacements for conventional technologies due to several desirable characteristics.…”

Promotion Effects of Hydrophobic Amino Acids on CO2 Hydrate Formation Kinetics under Isochoric/Isobaric and Stirred/Nonstirred Conditions

“…Formation conditions of clathrate hydrates (phase equilibria) greatly depend on the guest species and their compositions, and thus it would be possible to use hydrates for capturing CO 2 from the CO 2containing gas mixtures, implying the hydrate-based CO 2 capture such as precombustion and postcombustion capture. 6,7 In addition, clathrate hydrates primarily consist of water (∼85%) and do not produce any harmful byproducts, indicating great benefits when applying them for energy and environmental applications. 8,9 To improve the process efficiency and economic feasibility of hydrate-based carbon capture and sequestration, the use of proper hydrate additives is a highly promising strategy.…”

“…Hydrates pose several advantages to be applied to carbon capture and sequestration applications. Formation conditions of clathrate hydrates (phase equilibria) greatly depend on the guest species and their compositions, and thus it would be possible to use hydrates for capturing CO 2 from the CO 2 -containing gas mixtures, implying the hydrate-based CO 2 capture such as precombustion and postcombustion capture. , In addition, clathrate hydrates primarily consist of water (∼85%) and do not produce any harmful byproducts, indicating great benefits when applying them for energy and environmental applications. , …”