Promoting Methane Hydrate Formation for Natural Gas Storage over Chabazite Zeolites

• Main Authors: Shurraya Denning (7846451), Ahmad AA Majid (9641119), James M. Crawford (3126645), Moises A. Carreon (1489657), Carolyn A. Koh (1286730)
• Format: Other Non-Article Part of Journal/Newspaper
• Language: unknown
• Published: 1753
• Subjects: Biochemistry; Molecular Biology; Physiology; Ecology; Sociology; Cancer; Inorganic Chemistry; Computational Biology; Space Science; Environmental Sciences not elsewhere classified; Chemical Sciences not elsewhere classified; water contact area; restrict water activity; hydrophobic nature resulting; higher methane adsorption; high surface area; 8 ± 1; 3 ± 0; 34 increased water; natural gas storage; 5 %; respectively; 4 ± 1; chabazite zeolites ssz; zeolites enlarging; study investigates; structural integrity; orientation ); lower electrostaticity; hydrate growth; hydrate formation; hydrate conversion; average 2; 6 times; 34 due; Methane hydrate
• Online Access: https://doi.org/10.1021/acsaem.1c02902.s001

Gas hydrates are a promising methane storage method. This study investigates the potential for zeolites to overcome hydrate formation limitations. The chabazite zeolites SSZ-13 and SAPO-34 increased water-to-hydrate conversion from 5.8 ± 1.4% to 91.3 ± 0.5% and 38.4 ± 1.5%, respectively, due to the high surface area of the zeolites enlarging the gas-to-water contact area. SSZ-13 promoted on average 2.6 times more hydrate growth than SAPO-34 due to SSZ-13’s more hydrophobic nature resulting in higher methane adsorption (can be consumed in hydrate formation) and lower electrostaticity (does not restrict water activity/orientation). Overall, SSZ-13 maintains its structural integrity and exhibits reproducible hydrate formation promotion results.