SURFACE DYNAMICS IN TIN DIOXIDE-CONTAINING CATALYSTS .2. COMPETITION BETWEEN WATER AND OXYGEN-ADSORPTION ON POLYCRYSTALLINE TIN DIOXIDE

Authors
CALDARARU M SPRINCEANA D POPA VT IONESCU NI
Citation
M. Caldararu et al., SURFACE DYNAMICS IN TIN DIOXIDE-CONTAINING CATALYSTS .2. COMPETITION BETWEEN WATER AND OXYGEN-ADSORPTION ON POLYCRYSTALLINE TIN DIOXIDE, Sensors and actuators. B, Chemical, 30(1), 1996, pp. 35-41
Citations number
40
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
Journal title
Sensors and actuators. B, Chemical → ACNP
ISSN journal
09254005
Volume
30
Issue
1
Year of publication
1996
Pages
35 - 41
Database
ISI
SICI code
0925-4005(1996)30:1<35:SDITDC>2.0.ZU;2-Y
Abstract
The interaction of polycrystalline tin dioxide with traces of water co ntained in argon or in oxygen during repeated temperature cycling betw een 20 and 400 degrees C has been followed by measuring in situ a.c. e lectrical conductivity and by thermogravimetry. In an ambient with res idual humidity, water adsorption interferes with oxygen adsorption. Th e relative surface distribution of hydroxyl groups and oxygen species depends on the history of the sample.