Investigation on methane hydrate formation in silica gel particles below the freezing point

Abstract

Herein, methane hydrate formation in silica gel was studied in the temperature and pressure range of 253.1–268.1 K and 4.0–6.0 MPa, respectively.

Methane and hydrogen storage in clathrate hydrates

“…Furthermore, experiments at 276 K (Figure A4.5) also showed a similar trend as observed at 269 K and 274 K, with higher gas uptake at 130% pore-volume saturation (73.5 mmol CH4/mol H2O) than at 200% pore-volume saturation (72.9 mmol CH4/mol H2O). As anticipated, the CH4 uptake decreased with an increase in temperature from 269 K to 276 K, which indicates the influence of the driving force, and a similar trend was also observed in porous silica gel particles [178]. However, it is also important to mention that the experiments with 70% and 100% pore-volume saturations at 276 K failed to nucleate despite having a driving force of 2.7 MPa.…”

“…Another alternative approach to enhance the kinetics of CH4 hydrate formation rate is by employing a fixed bed porous column without stirring and some of the existing research has already shed light on suitable fixed bed packings to enhance water-to-hydrate conversion and to boost the hydrate growth [127,168,170,175,177,178,180,181,184,186,187,190,191,193,194,196,197,219,228,229,266,370,. Developing a synthetic porous material with high storage capacity, high chemical, mechanical, and thermal stability is assumed to be vital for a successful and efficient storage process.…”

Experimental study on the formation characteristics of CO2 hydrate in porous media below the freezing point: Influence of particle size and temperature on the formation process and storage capacity

“…When the ice particles are wrapped by the hydrate shell, the hydrate formation process turns to the diffusion control stage, and the shell surface forms bulges during the hydrate formation process and gradually thickens 43 . This causes the pore channels between the ice powder to become smaller and cement gradually 44 . These results demonstrated that, the agglutination among the smaller particle size ice powder hindered the diffusion process of gas in the mixture system of quartz sand and ice powder.…”

“…43 This causes the pore channels between the ice powder to become smaller and cement gradually. 44 These results demonstrated that, the agglutination among the smaller particle size ice powder hindered the diffusion process of gas in the mixture system of quartz sand and ice powder. The smaller the particle size of ice powder was, the more serious the effect would be.…”

Enhanced methane gas storage in the form of hydrates: role of the confined water molecules in silica powders

“…Additionally, morphological and physical properties of the host sediments could inuence the kinetics of hydrate formation and dissociation. [38][39][40][41][42][43] The formation kinetics and ability of conned water into hydrates under the gas-rich environment is studied.…”