Nanoparticles That Encourage Gas Storage Could Help Trap CO2: ACS_AMI gas GasStorage nanoparticles nanotechnology nanomaterials carbondioxide co2
By Bhavna KavetiJul 25 2022Reviewed by Susha Cheriyedath, M.Sc. Hydrate-based gas separation is used for sequestration of carbon dioxide . However, the requirement for high-performing additives to combat its low gas storage capacity makes this method expensive and environmentally unfriendly.
During methane hydrate formation, [email protected]3O4 nanoparticles served as an efficient promoter and reduced the induction time by one-third compared to the commonly used promoter sodium dodecyl sulfate . Additionally, gas storage capacity has increased up to 155 volume-by-volume . Gas Storage Using Gas Hydrates Related StoriesDue to the demand for greenhouse gas treatment and clean energy requirements, there has been an increasing need for gas storage and transportation at the industrial level. Moreover, laying pipelines for long-distance gas transportation is a costly and risky process with the natural geological hazards affecting the gas pipelines leading to corrosion and blockage.
Introducing surfactants can improve the gas storage capacity and formation kinetics of gas hydrates along with an increased number of nucleation sites. Although MOFs can promote methane hydrate formation using promoters like sodium polystyrene sulfonate and SDS results in foam formation during hydrate decomposition.
The experimental results revealed that compared to SDS samples with a concentration of 500 milligrams per liter, the induction time of gas hydrate formation in the PNS-0.4 sample reduced from 243.7 ± 27.8 minutes to 151 ± 14.4 minutes. Here, 0.4 represents the mass ratio of sodium p-styrene sulfonate. Hence, PNS-0.4 showed good gas storage capacity.
The isothermal hydrate formation test revealed that PNS-0.4 showed a 30% reduced induction time compared to the traditional SDS solution. Moreover, the methane gas storage capacity was increased by 20%. Furthermore, PNS mimicked the marine sediment in terms of CO2 gas storage.
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