Untersuchungen on Thoriumoxid-Katalysatoren. II [8] Über den Einfluß Oberflächenchemischer Eigenschaften von ThO2− Katalysatoren auf die selektive Dehydratisierung von 2-Butanol

Studies on Thoria Catalysts. II. On the Influences of Surfacechemical Properties Tho₂-Catalysts on the Selective Dehydration of 2-Butanol Acid and basic properties as well as the interaction of 2-butanol with the surfaces of some ThO₂catalysts were studied. Sites of low acidity and basic sites of medium strength were found on the catalysts. After CO₂ adsorption we have shown by i.r. spectroscopy the formation of monodentate and bidentate carbonate as well as hydrocarbonate. There were indications of Lewis-type acid sites. Bands of alcoxide and carboxylate structure were observed in the i.r. spectra by interaction with 2-butanol and thoria. A mechanism is proposed for dehydration of 2-butanol.