Formation and occurrence characteristics of methane hydrate in the complex system of sodium dodecyl sulfate and porous media ...

• Main Authors: Qin, Yue, Bao, Ruixin, Shang, Liyan, Zhou, Li, Meng, Lingxin, Zhu, Wenhao, Zhu, Jian, Chen, Yong
• Format: Text
• Language: unknown
• Published: Taylor & Francis 2022
• Subjects: Biochemistry; Space Science; Cell Biology; Physiology; FOS Biological sciences; Chemical Sciences not elsewhere classified; Science Policy; Methane hydrate
• Online Access: https://dx.doi.org/10.6084/m9.figshare.18866076; https://tandf.figshare.com/articles/journal_contribution/Formation_and_occurrence_characteristics_of_methane_hydrate_in_the_complex_system_of_sodium_dodecyl_sulfate_and_porous_media/18866076

In recent years, porous media have attracted a lot of attention due to the enhanced kinetics of hydrate formation. However, how porous media promote hydrate formation is still an open topic. In this study, two different porous media, activated alumina and glass beads (average particle size 1, 3, 5 mm), were mixed with sodium dodecyl sulfate (SDS) to promote methane hydrate formation (275.15 K, 6 MPa). The smaller the particle size is, the better the promoting effect of porous media is, corresponding to faster formation kinetics and higher gas consumption. The average hydrate formation rate (2.3 mmol/min) and T 90 (136 min) in the 1 mm activated alumina system was 2.6 and 0.4 times higher than the average hydrate formation rate (0.9 mmol/min) and T 90 (349 min) in the 3 mm activated alumina system, respectively. Better performance of activated alumina particles than that of glass beads because of its rich micropores and unique electric double layer distribution in solution. The gas storage density of hydrate ...