THE NATURE OF ELECTRON-TRANSFER IN OXIDE CATALYSTS .3. PECULIARITIES OF FORMATION AND DECAY OF SUPEROXIDE IONS ON PALLADIUM-CONTAINING YTTRIUM-OXIDE

Authors
FILIMONOV IN LOGINOV AY
Citation
In. Filimonov et Ay. Loginov, THE NATURE OF ELECTRON-TRANSFER IN OXIDE CATALYSTS .3. PECULIARITIES OF FORMATION AND DECAY OF SUPEROXIDE IONS ON PALLADIUM-CONTAINING YTTRIUM-OXIDE, Kinetics and catalysis, 34(6), 1993, pp. 962-966
Citations number
23
Categorie Soggetti
Chemistry Physical
Journal title
Kinetics and catalysis → ACNP
ISSN journal
00231584
Volume
34
Issue
6
Year of publication
1993
Pages
962 - 966
Database
ISI
SICI code
0023-1584(1993)34:6<962:TNOEIO>2.0.ZU;2-3
Abstract
Preliminary reduction of the Pd/Y2O3 surface accelerates the formation of adsorbed superoxide ions upon oxygen adsorption as a result of cha rge transfer from Pd+ to the oxygen molecule. The formation of more re duced oxygen species may proceed due to subsequent electron transfer f rom Pd+. Electron transfer occurs at low temperatures in the matrix of an insulator. The kinetics of adsorbed superoxide-ion decay in hydrog en (or Pd+ ions in oxygen at 77 K) is described well by the equations for tunnel recombination of electron donors and acceptors.