Catalytic properties of ZrO2-SiO2 (14% molar) for cyclohexene conversion (skeletal isomerization and hydrogen transfer) have been studied. Textural and morphological properties were correlated to explain catalytic behavior. XRD, DTA-TGA, N-2 adsorption, DRIFT, and acidity measurements by pyridine and dimethylpyridine chemisorption were used to characterize samples, The effect of the sulfation process upon surface structure as well on catalytic activity/selectivity has also been studied. It has been shown that catalytic activities are increased on sulfated samples, but at the same time products of the hydrogen transfer reaction seem to be increased too, lowering the selectivity of the reaction; isomerization always predominates, Sulfation transforms this compound to a relatively selective isomerization catalyst exhibiting greater catalytic activity.