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Chemomectric study of turpentine oil hydration using zeolite beta as catalyst

Abstract:

A central composite design was implemented to study the influence of the composition of the reaction mixture on the hydration of turpentine oil. Acidic zeolites beta having different Si/Al ratios were used as catalyst. The composition of the reaction mixture was expressed by the following ratios: Water/solvent, water/terpene and terpene/catalyst. Each variable was investigated using high and low values, central and star for optimization purposes. The resulting design consists of 17 experiments for each of the solid used as catalyst. The yield on α-terpineol (Rα) was used as response in the experimental design. The chemiometric study showed that water/solvent ratio is the factor with the highest influence on (Rα). The effect is quadratic in the case of zeolite beta with the lowest Si/Al. In contrast, the effect of water/solvent is less significant in the catalyst with the highest Si/Al ratio.