Ternary mixtures of n-docosane, n-tricosane and n-tetracosane

摘要

Binary phase diagrams of the systems: n-docosane: n-tricosane (C_22H_46:C_23H_48), n-tricosane: n0tetracosane (C_23H_48:C_24H_50) and n-docosane: n-tetracosane (C_22H_46:C_24H_50) have been established by means of structural and differential scanning calorimetry analyses. On the basis of these results and of X-ray examination of forty one ternary mixtures, it is proposed the ternary phase diagram (C_22H_46: C_23H_48:C_24H_50) at room temperature. This work has indicated the existence of limited terminal solid solutions near the three pure n-alkanes and three domains of orthorhombic intermediate phases (noted β'_1, β＂_1, β＂_2) identical to those observed in the binary systems.