摘要：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 VgVw-1 with heat release of similar to 18 kJ mol(-1) CH4 and the active ice can be easily regenerated by depressurization below the ice point. The active ice undergoes cyclic ice-hydrate-ice phase changes during gas uptake/release, thus removing most critical drawbacks of hydrate-based technologies. Our work provides a green and economic approach to gas storage and gas separation and paves the way to industrial application of hydrate-based technologies.

ISSN号： 2041-1723

卷、期、页：卷14期1

发表日期：2023-12-06

影响因子：0.000000

期刊分区（SCI为中科院分区）：一区

收录情况：SCI（科学引文索引印刷版）,SCIE（科学引文索引网络版）

发表期刊名称：NATURE COMMUNICATIONS

参与作者：庞维新,Linga, Praveen

通讯作者：李娟娟,陈婉,彭晓婉,谢炎,朱玉洁

第一作者：肖朋,王晓辉,邓春,孙长宇,刘蓓,彭云雷,陈光进

论文类型：期刊论文

论文概要：肖朋,李娟娟,陈婉,庞维新,彭晓婉,谢炎,王晓辉,邓春,孙长宇,刘蓓,朱玉洁,彭云雷,Linga, Praveen,陈光进，Enhanced formation of methane hydrate from active ice with high gas uptake，NATURE COMMUNICATIONS，2023，卷14期1

论文题目：Enhanced formation of methane hydrate from active ice with high gas uptake