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Table 5

Experimental data of methane semi-clathrate hydrate phase stability conditions in the presence of TBAB aqueous solutions.

P/MPaa T/Kb P/MPa T/K P/MPa T/K
wTBABc = 0.0350d wTBAB = 0.0490 wTBAB = 0.1500
1.91 281.9 1.59 282.3 1.31 286.5
2.11 282.1 1.84 283.0 1.57 287.0
2.37 282.6 1.99 283.3 1.73 287.3
2.81 283.4 2.41 284.0 2.11 287.9
3.25 283.9 2.86 284.7 2.84 289.0
3.83 284.7 3.88 285.7 3.35 289.5
4.36 285.2 4.34 286.2 4.07 290.1
4.56 285.4 5.10 287.0 4.77 290.7
4.81 285.6 5.90 287.4 5.36 291.2
5.14 285.9 6.77 288.0 6.11 291.7
5.54 286.1 6.84 288.1 6.99 292.2
5.96 286.5 – – 7.51 292.4
6.80 287.0 – – 7.61 292.4
a

The expanded uncertainties (Uc) in the reported pressures are about ±0.01 MPa.

b

The expanded uncertainties (Uc) in the reported temperatures are about ±0.1 K.

c

Mass fraction of TBAB in the aqueous solution.

d

The expanded uncertainties (Uc) in the reported mass fractions are about ±0.0001.

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