ROLE OF SOLID-STATE INTERACTIONS IN THE GENESIS OF ACID-BASE PROPERTIES OF THE Y2O3-ZRO2 SURFACE

Authors
LUNIN VV KHARLANOV AN
Citation
Vv. Lunin et An. Kharlanov, ROLE OF SOLID-STATE INTERACTIONS IN THE GENESIS OF ACID-BASE PROPERTIES OF THE Y2O3-ZRO2 SURFACE, Kinetics and catalysis, 37(5), 1996, pp. 645-650
Citations number
21
Categorie Soggetti
Chemistry Physical
Journal title
Kinetics and catalysis → ACNP
ISSN journal
00231584
Volume
37
Issue
5
Year of publication
1996
Pages
645 - 650
Database
ISI
SICI code
0023-1584(1996)37:5<645:ROSIIT>2.0.ZU;2-3
Abstract
Acid-base properties of the surface of zirconia and zirconia modified with yttria are studied by diffuse-reflectance IR spectroscopy. Yttriu m cations supported on the ZrO2 surface by impregnation are shown to m igrate in the bulk. As a result, the tetragonal modification of zircon ia is formed in the subsurface layer. The concentration of Lewis acid sites on the surface of the modified ZrO2 system declines with increas ing yttria content. Simultaneously, electron-donor adsorption centers are formed.