Zwitterionic polymeric hydrogels promote CO2 hydrate formation kinetics: An experimental study

被引:0
作者
Zhang, Yuxuan [1 ]
Thanusing, Moki [2 ]
Rahaman, Md Saifur [2 ]
Wang, Fei [3 ]
Alexander, Katia [1 ]
Connal, Luke A. [2 ]
Zhang, Fengyuan [1 ]
Wang, Xiaolin [1 ]
机构
[1] Australian Natl Univ, Sch Engn, Canberra, ACT 2601, Australia
[2] Australian Natl Univ, Res Sch Chem, Canberra, ACT 2601, Australia
[3] Qingdao Univ Sci & Technol, Coll Electromech Engn, Shandong Engn Lab Preparat & Applicat High perform, Qingdao 266061, Peoples R China
基金
澳大利亚研究理事会;
关键词
Hydrate-based carbon capture; Hydrate formation kinetics; Polymeric superabsorbent hydrogel; CO2 gas hydrate; GAS HYDRATE; METHANE HYDRATE; PHASE-EQUILIBRIUM; STORAGE; CARBON; CAPTURE; GROWTH; WATER;
D O I
10.1016/j.fuel.2025.135329
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Hydrogels are appealing support structures for the promotion of clathrate hydrate by increasing the gas-liquid contact surface area. However, due to their soft and adhesive nature, the current hydrogel materials cannot independently support the formation of hydrates. In this work, we used free radical polymerisation to develop a set of hydrogels with varied functionality and density, and investigated the effect of hydrogel composition on its reusability and ability to promote CO2 hydrate formation kinetics. The hydrogels demonstrate better recyclability than those reported in literature and the sample with the composition methacrylic acid: [2-(methacryloyloxy) ethyl] trimethylammonium chloride:ethylene glycol dimethacrylate = 47.5:47.5:5 exhibits optimal performance, with a normalised CO2 hydrate growth rate during the initial 30 min (NR30) of 187.23 mol m-3 min-1, and an 8hour water-to-hydrate conversion rate (CR8h) of 86.3 %. This study demonstrates the ability for molecular engineering of the hydrogel structure to enhance gas hydrate formation kinetics for the practical realization of hydrate-based carbon capture technology.
引用
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页数:13
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