TEMPERATURE-PROGRAMMED GAS-CHROMATOGRAPHY OF ALCOHOLS ON CELLULOSE TRIBENZOATE

Cellulose tribenzoate (CTB) has some desirable operational properties and special interactions with alcohols. When chromatographic separatio n is carried out at 150 degrees C, the C1-C4 alcohols have enhanced re tention and other alcohols are eluted rapidly. Some probe molecules we re used to characterize the chromatographic behavior of CTB by calcula ting the adsorption enthalpy (-Delta Ha) between the sample and statio nary phase. Separation of aliphatic alcohols was successfully performe d on a packed column with a support (GDX) coated with CTB and temperat ure programming improved the separation of these alcohols.