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CO 2 Hydrate Formation Promoted by a Natural Amino Acid l ‐Methionine for Possible Application to CO 2 Capture and Storage
Author(s) -
Cai Yuanhao,
Chen Yulong,
Li Qijie,
Li Liang,
Huang Haoxin,
Wang Suying,
Wang Weixing
Publication year - 2017
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201600731
Subject(s) - hydrate , methionine , chemistry , clathrate hydrate , amino acid , chemical engineering , biochemistry , organic chemistry , engineering
We demonstrate that l ‐methionine, a natural amino acid, can be used to dramatically enhance CO 2 uptake kinetics in the formation of CO 2 hydrate without the use of energy‐intensive mixing technologies or environmentally harmful chemicals. To the best of our knowledge, l ‐methionine is the most effective promoter to enhance CO 2 hydrate formation (at a concentration of 0.2 wt %, the gravimetric capacity reached up to 356 mg g −1 in 1000 min, and t 90 (the time to achieve 90 % of this capacity) was only 15 min). We also present a tentative explanation for the promotion mechanism of l ‐methionine in the formation of CO 2 hydrate from the point of view of structure–property relationship that will help search for more effective promoters. Our results may offer the possibility of practical application of hydrate‐based CO 2 capture and storage technology.