The acidity of H-MTW-type zeolite has been investigated using infrared spectroscopy of adsorbed pyridine. Pore volume has been measured by nitrogen and n-hexane adsorption. The zeolite exhibits infrared signals at 3612 and 3580 cm(-1) tentatively attributed to bridging hydroxyl groups vibrating in the main channel and in the six-membered rings of the structure, respectively. Both hydroxyl groups possess high acid strength and are readily accessible to pyridine. H-MTW shows a n-hexane cracking activity at 350 degrees C comparable to that obtained with MFI and BEA-type materials with a product selectivity between medium and large pore structural types.