CAYALYTIC AND PHYSICOCHEMICAL PROPERTIES OF LA1-XSRXCOO3 PEROVSKITES

Authors
ISUPOVA LA SADYKOV VA IVANOV VP RAR AA TSYBULYA SV ANDRIANOVA MP KOLOMILCHUK VN PETROV AN KONONCHUK OF
Citation
La. Isupova et al., CAYALYTIC AND PHYSICOCHEMICAL PROPERTIES OF LA1-XSRXCOO3 PEROVSKITES, Reaction kinetics and catalysis letters, 53(1), 1994, pp. 223-229
Citations number
8
Categorie Soggetti
Chemistry Physical
Journal title
Reaction kinetics and catalysis letters → ACNP
ISSN journal
01331736
Volume
53
Issue
1
Year of publication
1994
Pages
223 - 229
Database
ISI
SICI code
0133-1736(1994)53:1<223:CAPPOL>2.0.ZU;2-D
Abstract
Catalytic properties of strontium-substituted lanthanum cobaltites La1 -xSrxCoO3 in the reaction of CO oxidation were compared with the data about chemical composition of the surface and bulk defect structure. I t was found that (1) the initial catalytic activity correlates with th e cobalt concentration on the surface; (2) surface composition differs from the bulk one; (3) the steady-state activity is proportional to t he density of bulk extended defects. Under our experimental conditions no role of point defects was noted.