HNCO adsorption monitored by FT-IR spectroscopy was performed over a wide range of oxides from various acid-base and redox properties: SiO2, Al2O3, TiO2, ZrO2, CeO2, CeO2-ZrO2, WO3/CeO2-ZrO2. HNCO adsorbed dissociatively in the whole studied samples. A correlation with pyridine via wavenumbers revealed that HNCO dissociation mainly involved weak Lewis acid sites (LAS) location. The significant isocyanate adsorption capacity of titania and zirconia was evidenced. HNCO hydrolysis reaction was also investigated. Among the various studied samples, CeO2-ZrO2 and WO3/CeO2-ZrO2 presented the higher HNCO hydrolysis rate, with ammonia formation from room temperature. For all studied samples, -NCO groups were evidenced as intermediate species of HNCO hydrolysis.