Hydrate phase equilibria of furan, acetone, 1,4-dioxane, TBAC and TBAF

•Experimental hydrate dissociation conditions are reported for CO2/methane + some water soluble/insoluble hydrate formers.•An isochoric pressure-search method was used to generate the experimental data.•The data are compared with the corresponding literature data in the presence of pure water.•The hydrate promotion effects of acetone, 1,4-dioxane, furan, TBAC and TBAF are discussed.

In this communication, we first report experimental hydrate dissociation pressures for the methane/carbon dioxide + furan/acetone/1,4-dioxane + water and the methane + tetra n-butyl ammonium chloride (TBAC) + water as well as the carbon dioxide + tetra n-butyl ammonium floride (TBAF) + water systems in the temperature ranges of (269.9 to 303.3) K. An isochoric pressure-search method was used to generate the experimental data. The hydrate dissociation data are compared with the corresponding literature data, if exists, and the literature data in the presence of pure water and acceptable agreement is observed. A discussion is made on hydrate promotion effects of acetone, 1,4-dioxane, furan, TBAC and TBAF.