Enhanced formation of methane hydrate from active ice with high gas uptake.

ABSTRACT: Gas hydrates provide alternative solutions for gas storage & transportation and gas separation. However, slow formation rate of clathrate hydrate has hindered their commercial development. Here we report a form of porous ice containing an unfrozen solution layer of sodium dodecyl sulfate, here named active ice, which can significantly accelerate gas hydrate formation while generating little heat. It can be readily produced via forming gas hydrates with water containing very low dosage (0.06 wt% or 600 ppm) of surfactant like sodium dodecyl sulfate and dissociating it below the ice point, or by simply mixing ice powder or natural snow with the surfactant. We prove that the active ice can rapidly store gas with high storage capacity up to 185 V_g V_w^-1 with hea

SUBMITTER: Xiao P 

PROVIDER: S-EPMC10700304 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature