Hydrate dissociation conditions are reported for the following systems: CO2 + tetra-n-butyl ammonium acetate (TBAA) + water, CO2 + tetra-n-butyl ammonium fluoride (TBAF) + water, CO2 + tetra-n-butyl ammonium bromide (TBAB) + cyclopentane + water, Ar + tetrabutylphosphonium bromide (TBPB) + water, Ar + tetrabutyl ammonium nitrate (TBANO(3)) + water, and methane + TBAB + cyclopentane + water. The measurements were performed using an isochoric pressure-search method in the temperature range of (276.1-302.7) K and the pressure range of (0.31-9.90) MPa. The results show that TBAF and TBAA have a promotion effect on CO2 hydrates, and TBPB and TBANO(3) promote Ar hydrate formation. Furthermore, the addition of cyclopentane to 0.05 mass fraction TBAB aqueous solution results in a significant promotion effect.