Inhibition synergism of glycine (an amino acid) and [BMIM][BF4] (an ionic liquid) on the growth of CH4 hydrate

Lee, Dongyoung; Go, Woojin; Ko, Gyeol; Seo, Yongwon

doi:10.1016/j.cej.2020.124466

Cited by 20 publications

(8 citation statements)

References 43 publications

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“…[332] As a molecule involved in forming supramolecular complexes with water and hydrocarbons, glycine can be used to prevent the formation of gas hydrates, what has enormous importance for preventing blocking of gas pipes. [333][334][335][336] Interacting with the outer and inner surfaces, self-assembling at the surfaces, and penetrating into the bulk of inorganic host structures it can produce new materials for various applications from semiconductors to biocoatings. [337][338][339][340][341][342] In particular, one can fine-tune the energy gap in semiconducting materials by inducing lattice strain when amino acids, including also glycine, are incorporated into the host structure.…”

Section: Glycine and Its Ability To Form Solid Complexes With Other C...mentioning

confidence: 99%

Glycine: The Gift that Keeps on Giving

Boldyreva

2021

Israel Journal of Chemistry

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Glycine is a small molecule. It cannot change its conformation and is achiral. Despite the apparent simplicity, glycine shows endless diversity in its behavior over many phenomena. It was the first amino acid for which polymorphism was reported, first on crystallization and then on hydrostatic compression. The polymorphs differ in their physical properties and their biological activity. Glycine clusters persist in solution, leading to "solution memory". Phenomena at interfaces are critically important for crystal growth, dissolution, and for physical properties, which can be at times unexpected, like polarity in centrosymmetric αpolymorph. It is a great pleasure to remind of these remarkable phenomena in a special issue honoring professors Meir Lahav and Leslie Leiserowitz, who pioneered the study of the behavior of this unique molecule in many respects, and showed how complex and non-trivial phenomena can be at interfaces: between phases and between research fields.

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Section: Glycine and Its Ability To Form Solid Complexes With Other C...mentioning

confidence: 99%

Glycine: The Gift that Keeps on Giving

Boldyreva

2021

Israel Journal of Chemistry

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“…The authors explained the kinetic inhibition effect of the amino acids through a perturbation mechanism, which simply proposed that the amino acids with lower hydrophobicity were able to disrupt the hydrogen bonding of water molecules that would originally make up the hydrate cages, thus delaying nucleation and inhibiting hydrate formation. On the other hand, the amino acids with higher hydrophobicity simply strengthen the local water ordering, as the water molecules in the vicinity of the solution zones containing the hydrophobic amino acid would want to move away from the source of hydrophobicity (long alkyl side chains of the amino acids), thus resulting in a more consolidated water structure. , There have been several more studies to add to the ones mentioned above, where amino acids have been observed to function as hydrate inhibitors (THIs/KHIs) for various gas hydrate systems; ,− however, a detailed review of these is beyond the scope of the current manuscript. For a more exhaustive compilation on the application of amino acids as inhibitors for gas hydrate formation, one may refer the recent review article published by Bavoh et al 2019 …”

Section: Introductionmentioning

confidence: 99%

Amino Acids as Kinetic Promoters for Gas Hydrate Applications: A Mini Review

2021

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Gas hydrates are viewed as a potential process enabler for several critical technological applications such as methane storage, hydrogen storage, gas separation, desalination, carbon dioxide capture and sequestration, etc. Hydrate based technological applications almost always require rapid hydrate formation along with high gas uptake to be economically viable. One possible approach to achieve the same is the introduction of particular additives into the system. These additives which are known as kinetic hydrate promoters (KHPs) either reduce the time required for hydrate nucleation or enhance the rate of hydrate growth or both. In recent times, amino acids, which are essential components of the human diet and thus ecofriendly materials, have emerged as a highly effective class of KHPs and unlike surfactants (traditional KHP molecules) promise a clean mode of kinetic action, i.e., no foam formation. Here we review the application of amino acids as KHPs for gas hydrate formation thus far and present perspectives on the mechanism of action for the same.

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“…The 41 articles studied about 247 IL systems at varying concentrations (up to 50 wt %) in different gas systems and/or mixed/synergistic studies of ILs, commercial inhibitors (MeOH, EtOH, etc. ), and amino acids (glycine). ,, However, 28 out of the 41 articles were published post the last review on ILs as gas hydrate inhibitors by Tariq et al The 28 articles consist of 163 IL systems with the methane hydrate phase boundary being the most studied. ,,,,,− Followed by CO 2 ,, and mixed CH 4 + CO 2 systems, , other authors have also studied the effect of ILs on natural gas hydrate compositions. , Generally, two main types of methods and apparatuses are used to determine the hydrate phase boundary conditions of ILs. The widely used method is the isochoric pressure search technique ,,,,,− or the T-cycle method; ,,, this method is mostly used in high-pressure autoclave cells, ,,,, rocking cells, ,, and hydreval .…”

Section: Gas Hydrate Mitigation Using Ionic Liquidsmentioning

confidence: 99%

Ionic Liquids as Gas Hydrate Thermodynamic Inhibitors

Bavoh

Nashed

Rehman

et al. 2021

Ind. Eng. Chem. Res.

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Ionis liquids (ILs) are promising novel thermodynamic gas hydrate inhibitors (THIs) that have gained an ongoing experimental and modeling research prospect over a decade. In view of this, the path to developing desirable ionic liquids THIs depends on understanding the state-of-the-art methods of ILs hydrate inhibition impacts and factors that influence their performance. This review provides a holistic summary of the use of ILs as THIs. Almost all the available thermodynamic hydrate inhibition data of different gas systems in the presence of ILs at varying concentrations were critically reviewed and analyzed. Also, all ILs hydrate-related phase behavior modeling studies and their prediction accuracies are discussed in this work. The hydrate phase boundary inhibition effects of each IL are provided alongside factors that affect their inhibition performance. The study showed that IL cations, anions, and chain length characteristics control their hydrate inhibition impacts. By far, a narrow hydrate suppression temperature window below 3 K at 10 wt % IL concentration has been achieved with accurate predictions using various models. This narrow THI performance window could be enhanced by exploring novel IL families with low molecular weights, well-optimized cation–anion interactions, and active hydrogen bonding interactive functionalities. The findings presented in this work are relevant for future IL-related breakthrough research in hydrate inhibition technologies.

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Inhibition synergism of glycine (an amino acid) and [BMIM][BF4] (an ionic liquid) on the growth of CH4 hydrate

Cited by 20 publications

References 43 publications

Glycine: The Gift that Keeps on Giving

Glycine: The Gift that Keeps on Giving

Amino Acids as Kinetic Promoters for Gas Hydrate Applications: A Mini Review

Ionic Liquids as Gas Hydrate Thermodynamic Inhibitors

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