NMR and Theoretical Study of Acid Sites Formed by Adsorption of SO3 onto Oxide Surfaces

✍ Scribed by Jinhua Zhang; John B. Nicholas; James F. Haw

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 179 KB
• Volume: 39
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/1521-3773(20000915)39:18<3302::aid-anie3302>3.0.co;2-t

✦ Synopsis

The structure and function of acid sites formed by the treatment of oxide surfaces with sulfur compounds is a current problem in heterogeneous catalysis. [1] While many studies have considered hydrogen sulfate surface complexes as the locus of solid acidity in such materials, other acidic surface sites have also been proposed, including those formed from adsorbed SO 3 . Haase and Sauer recently reported a periodic ab initio theoretical study of sulfuric acid adsorbed on lowindex surfaces of ZrO 2 . [2] One of the stable structures they found on ZrO 2 (001) was a tridentate-adsorbed SO 3 species. This conclusion was consistent with an experimental study of Babou and co-workers, who on the basis of infrared studies