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Methane Hydrate Formation and Dissociation in Synperonic PE/F127, CTAB, and SDS Surfactant Solutions

Formation and dissociation conditions for methane hydrates were investigated in the presence of aqueous solutions of a no-ionic triblock copolymer synperonic PE/F127 (PE/F127) at 377, 710, 1530 ppm with the aim of evaluating the promotion activity. A cationic cetyltrimethylammonium bromide (CTAB) an...

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Published in:Journal of chemical and engineering data 2018-07, Vol.63 (7), p.2477-2485
Main Authors: Pérez-López, Hugo I, Elizalde-Solis, Octavio, Avendaño-Gómez, Juan Ramon, Zúñiga-Moreno, Abel, Sanchez-Minero, Felipe
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cited_by cdi_FETCH-LOGICAL-a317t-7d5a7f215ffc4b31f8cc76800df4d3b80601e553dbe69d32024c6c6379bc09f13
cites cdi_FETCH-LOGICAL-a317t-7d5a7f215ffc4b31f8cc76800df4d3b80601e553dbe69d32024c6c6379bc09f13
container_end_page 2485
container_issue 7
container_start_page 2477
container_title Journal of chemical and engineering data
container_volume 63
creator Pérez-López, Hugo I
Elizalde-Solis, Octavio
Avendaño-Gómez, Juan Ramon
Zúñiga-Moreno, Abel
Sanchez-Minero, Felipe
description Formation and dissociation conditions for methane hydrates were investigated in the presence of aqueous solutions of a no-ionic triblock copolymer synperonic PE/F127 (PE/F127) at 377, 710, 1530 ppm with the aim of evaluating the promotion activity. A cationic cetyltrimethylammonium bromide (CTAB) and an anionic sodium dodecyl sulfate (SDS) surfactant were also tested and conducted at 356, 705, 1500 ppm and 376, 701, 1510 ppm respectively. Experiments with the three surfactants were carried out in an isochoric autoclave under the same conditions: near the ice normal melting point (273.15 K), as the cooling temperature of the autoclave, and five initial pressures stated from 3.5 to 12.0 MPa. Performance of these surfactants was assessed by reporting hydrate–liquid water–vapor (H–L–V) phase equilibria, enthalpies of dissociation estimated using the Clausius–Clapeyron equation, induction times, crystallization temperatures, growth rates and theoretical methane consumptions. In brief, the obtained induction time for PE/F127 was higher than CTAB but lower than SDS, the growth rate between PE/F127 and SDS were similar at lower concentrations, and the maximum gas consumption for PE/F127 was reached at 1530 ppm but this methane uptake was far from those results using SDS.
doi_str_mv 10.1021/acs.jced.7b01009
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title Methane Hydrate Formation and Dissociation in Synperonic PE/F127, CTAB, and SDS Surfactant Solutions
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