Promoting Methane Hydrate Formation for Natural Gas Storage over Chabazite Zeolites

被引:26
作者
Denning, Shurraya [1 ]
Majid, Ahmad A. A. [1 ]
Crawford, James M. [1 ]
Carreon, Moises A. [1 ]
Koh, Carolyn A. [1 ]
机构
[1] Colorado Sch Mines, Chem & Biol Engn Dept, Golden, CO 80401 USA
基金
美国国家科学基金会;
关键词
gas hydrates; chabazite zeolites; gas storage; natural gas; hydrophobicity; hydrate promoter; SAPO-34; MEMBRANES; SSZ-13; CH4; CO2;
D O I
10.1021/acsaem.1c02902
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
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.
引用
收藏
页码:13420 / 13424
页数:5
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