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Research Article Open access CC BY 3.0

Viscosity Reduction with Self-Assembly of Cationic Surfactant on Tetra-n-butyl Ammonium Bromide Semi-Clathrate Hydrate Aqueous Slurry

Shunsuke Hashimoto, Kazushi Kawamura

Chemical Science International Journal · pp. 69–85 · Published 18 Aug 2012

10.9734/ACSJ/2012/1616

Abstract

Aims: To utilize hydrate slurry for phase change refrigerants, the rheological properties are essential. In the present study, the viscosity characteristics of hydrate slurry are investigated. Additionally, the effect of cationic surfactant on viscosity is also evaluated. Study Design: Experimental and analytical study. Place and Duration of Study: Division of Chemical Engineering, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, between December 2010 and October 2011. Methodology: Tetra-n-butyl ammonium bromide (TBAB) semi-clathrate hydrate aqueous slurry was adopted. The viscosity of solutions and slurries was measured at various concentrations of solution and various solid fractions by use of stress-control-type rheometer. The measurements were performed in the both case without and with cationic surfactant. Additionally, the size and shape and aggregation property of hydrate particles in slurry were evaluated by means of direct observation and zeta potential analysis. Results: The apparent viscosity of both TBAB solution and hydrate slurry increases as the temperature decreases, which is caused by the increase of solid fraction in slurry. The TBAB hydrate slurry behaves like pseudo-plastic fluid. In addition, the effect of minimal surfactant on rheological characteristics of TBAB hydrate slurry was investigated. A very small amount of surfactant drastically reduces the apparent viscosity of TBAB hydrate slurry, and then the morphology of TBAB hydrate particle does not change regardless of the existence of surfactant. From the measurement on zeta potential of the surface of TBAB hydrate particle, the viscosity reduction effect may be caused by the electric repulsion of surfactant-adsorbed hydrate particles. Conclusion: A very small amount of surfactant drastically reduces the apparent viscosity of TBAB hydrate slurry, which is due to the electric repulsion among surfactant-adsorbed hydrate particles.

Semi-clathrate hydrate slurry viscosity self-assembly surfactant tetra-n-butyl ammonium bromide.

References (23)

  1. 1 Clathrate Hydrates of Natural Gases [DOI]
  2. 2 Phase diagram, latent heat, and specific heat of TBAB semiclathrate hydrate crystals [DOI]
  3. 3 Surfactant systems for drag reduction: Physico-chemical properties and rheological behaviour [DOI]
  4. 4 Rheological study of TBAB hydrate slurries as secondary two-phase refrigerants [DOI]
  5. 5 Tetra-n-butylammonium bromide–water (1/38) [DOI]
  6. 6 Separation of Gas Molecule Using Tetra-n-butyl Ammonium Bromide Semi-Clathrate Hydrate Crystals [DOI]
  7. 7 Thermodynamic and Raman spectroscopic studies on H2+tetrahydrofuran+water and H2+ tetra-n-butyl ammonium bromide+water mixtures containing gas hydrates [DOI]
  8. 8 Thermodynamic stability of hydrogen + tetra-n-butyl ammonium bromide mixed gas hydrate in nonstoichiometric aqueous solutions [DOI]
  9. 9 Chemical and Rheological Characterization of Drag-Reducing Cationic Surfactant Systems [DOI]
  10. 10 Clathrate Hydrate Formation from Cyclopentane-in-Water Emulsions [DOI]
  11. 11 Hydrates of the Tetra n-butyl and Tetra i-amyl Quaternary Ammonium Salts [DOI]
  12. 12 Clathrate Hydrates of Tetrabutylammonium and Tetraisoamylammonium Halides [DOI]
  13. 13 Forced flow and convective melting heat transfer of clathrate hydrate slurry in tubes [DOI]
  14. 14 Rheology of Hydrate Forming Emulsions [DOI]
  15. 15 Experimental investigation on TBAB clathrate hydrate slurry flows in a horizontal tube: Forced convective heat transfer behaviors [DOI]
  16. 16 Adsorption of Surfactants on Two Different Hydrates [DOI]
  17. 17 Development of High-density Cold Latent Heat with Clathrate Hydrate
  18. 18 Experimental study on the flow and heat transfer characteristics of a tetra-n-butyl ammonium bromide hydrate slurry (first report: Flow characteristics) [DOI]
  19. 19 Raman Spectroscopic Study on the Hydration Structures of Tetraethylammonium Cation in Water [DOI]
  20. 20 Rheological characteristics of trimethylolethane hydrate slurry treated with drag-reducing surfactants [DOI]
  21. 21 Pressure drops and loss coefficients of a phase change material slurry in pipe fittings [DOI]
  22. 22 Drag reduction characteristics of trimethylolethane hydrate slurries treated with surfactants [DOI]
  23. 23 Experimental Investigation of the Pressure-Drop of Clathrate Hydrate Slurry (CHS) Flow of Tetra Butyl Ammonium Bromide (TBAB) in Straight Pipe

Cited by 6

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P. Zhang, Z.W. Ma, Z.Y. Bai · Energy · 2016

Study of tetra-n-butylammonium bromide and tetrahydrofuran hydrate formation kinetics as a cold storage material for air conditioning system

Badri Mahmoudi, Parisa Naeiji, Farshad Varaminian · Journal of Molecular Liquids · 2016

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