An innovative approach to enhance methane hydrate formation kinetics with leucine for energy storage application

Investigation of kinetics of tetrabutylammonium chloride (TBAC) + CH4 semiclathrate hydrate formation

“…Different from the calculation of NGC with moles of consumed gas and water reported in refs, 46,47 the calculation of NGC in the present study was proposed due to the fact that the amount of TBAC was the main factor affecting the hydrate forming amount in our systems. According to the structural parameters (10D$5TBAC$150H 2 O, V ¼ 7.048 Â 10 À27 m 3 ) reported by Rodionova et al, 3 the storage capacity of (TBAC + CH 4 ) hydrate should be 2 molCH 4 mol À1 TBAC (namely 52.768 m À3 CH 4 m 3 SCH) 48 with TS-I structure.…”

Methane Hydrate in Confined Spaces: An Alternative Storage System

“…Mori et al., [29] supported by several works have stated that the major mechanism of the hydrate‐formation enhancement is the capillary‐driven supply of water into porous hydrates layer growing on the walls of the hydrate‐forming chambers and not the formation of micelles which, in any case, would retard the hydrate formation . In contrast to the various emulsion and suspension techniques, and the different surfactants, that have successfully been used to increase nucleation kinetic, inhibitors have also been widely investigated to prevent the crystals from agglomeration and subsequently pipeline blockage . Current practices are to avoid hydrate blockages by injecting an alcohol‐ or glycol‐based thermodynamic hydrate inhibitor (THI) .…”

“…This is due to the limited gas‐liquid interphase (interfacial phenomena) that inhibits appropriate methane dissolution/diffusion (mass transfer resistance) in bulk water to reach the critical concentration required to initiate the nucleation. Furthermore, the bulk process is also limited by the agglomeration of hydrate crystals at the interface, so that the formation rate is inversely proportional to the thickness of the hydrate film ,. However, these limitations can be overcome through the incorporation of a solid surface able to improve/promote the contact area between water and methane, thus speeding‐up the nucleation kinetics.…”

The Role of Natural Gas Hydrate During Natural Gas Transportation

“…The fast formation of gas hydrates and its storage are necessary because the induction time of gas hydrate formation is high and the kinetic of gas hydrate formation is slow [56,82]. In the study of Veluswamy et al [83], as kinetic promoter, amino acid (leucine) was suggested to speed up hydrate formation without stirring or with stirring. Fast hydrate formation was observed when hybrid method was applied.…”