Promoted Disappearance of CO2 Hydrate Self-Preservation Effect by Surfactant SDS

The capture, storage and utilization of CO2 through hydrate-related technology is a promising approach to addressing the global warming issue. Dissociation required after transportation gas in form self-preserving hydrate. In order investigate dissociation behaviors as self-preservation effect removed, hydrates were frozen, then was removed uniform heating. An evident dependence hydrate duration on initial rates losing preservation observed. results silica gel powder sodium dodecyl sulphate solution showed significant reductions temperatures slight decrease when compared with those pure water. former 2.88, 2.89, 5.73 °C gel, sulphate, combination two, respectively, while latter 0.12, 0.16 mmol/min, respectively. As are inconsistent conventional mechanism elucidating effect, ice shell theory hence further supplemented by introducing innovative contribution factors—nonenclathrated liquid water molecules dissolved inside. These findings expected provide references for usage effect.