Semi-clathrate hydrate phase stability conditions for methane + TetraButylAmmonium Bromide (TBAB)/TetraButylAmmonium Acetate (TBAA) + water system: Experimental measurements and thermodynamic modeling | Oil & Gas Science and Technology

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Table 4

The structural parameter (β) for TBAB and TBAA at various mass fractions.

Quaternary ammonium salt	Mass fraction	β/K·MPa⁻¹	Calculation method
TBAB	0.0350	8.1324	Extrapolated using Figure 2
	0.0490	6.8749	Extrapolated using Figure 2
	0.1500	3.9326	Interpolated using Figure 2
TBAA	0.0990	4.5000	Optimized in this work

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