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Fan S.,South China University of Technology | Yang L.,South China University of Technology | Wang Y.,South China University of Technology | Wang Y.,The Key Laboratory of Fuel Cell Technology of Guangdong Province | And 3 more authors.
Chemical Engineering Science

Surfactant dry solution (DS) was prepared by mixing sodium dodecyl sulfate (SDS) solution, hydrophobic silica nanoparticles and air in a high speed blender. Flour-like SDS-DS combines the advantages of dispersed dry water and active SDS solution. Methane storage in clathrate hydrates using SDS-DS was investigated in a stainless steel vessel without stirring under the condition of 5.0MPa and 273.2K. The results demonstrated that highly dispersed SDS-DS could significantly enhance formation kinetics and storage capacity of methane hydrate. SDS-DS exhibited about the same methane storage capacity (172.96m3m-3) as dry water, but faster storage rates than dry water. Compared to SDS solution, SDS-DS had similar storage rates (7.44m3m-3min-1) and higher methane storage capacity under the relative low pressure. However, the aggregation of partial SDS-DS powders destroyed its original dispersive property after hydrate dissociation. © 2013 Elsevier Ltd. Source

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