The author of 《Experimental and computational investigation of methane hydrate inhibition in the presence of amino acids and ionic liquids》 were Lee, Dongyoung; Go, Woojin; Seo, Yongwon. And the article was published in Energy (Oxford, United Kingdom) in 2019. Category: imidazoles-derivatives The author mentioned the following in the article:
Amino acids (glycine and alanine) and ionic liquids ([BMIM][BF4] and [BMIM][I]) were examined for their inhibition elects on CH4 hydrates with exptl. and computational approaches. Both amino acids and ionic liquids functioned well as thermodn. hydrate inhibitors, by shifting equilibrium curves of CH4 hydrates toward harsh conditions. However, powder X-ray diffraction patterns indicated that amino acids and ionic liquids did not alect the hydrate structure because they were not included in the hydrate cages due to their large mol. size. Gas uptake measurements showed that the conversion of water into gas hydrates and the formation rates of CH4 hydrate were significantly influenced by inhibitors. D. functional theory calculations indicated that [BMIM][BF4] had a larger potential than glycine to inhibit gas hydrate formation by giving a more neg. interaction energy between a cage and an inhibitor mol. The time-dependent Raman spectra collected during CH4 hydrate formation demonstrated that [BMIM][BF4] hindered CH4 mols. from occupying small (512) cages, whereas glycine had a strong influence on large (51262) cages of sI hydrates. The exptl. and computational results provide a better understanding of inhibition mechanisms of gas hydrates and thus can contribute to the improved control of hydrate formation in oil and gas pipelines. The experimental part of the paper was very detailed, including the reaction process of 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6Category: imidazoles-derivatives)
3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6) is a member of lonic liquids. Actually, lonic liquids as innovative fluids have received wide attention only during the past two decades. The number of SCI papers published on lonic liquids has exponentially increased from a few in 1996 to >5000 in 2016, exceeding the annual growth rates of other popular scientific areas. Category: imidazoles-derivatives
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem