Luminescence and optical spectroscopic study of the interaction of palladium and cerium in catalysts

Journal Article · Sun Jun 01 04:00:00 EDT 1986 · Kinet. Catal. (Engl. Transl.); (United States)

OSTI ID:6962410

Sass, A S; Kazanskii, V B; Kuznetsov, A V; Popova, N M; Savel'eva, G A; Shuets, V A

Luminescence and diffuse reflection spectroscopic methods established the presence of incompletely coordinated Ce/sup 3 +/ ions on the surface of reduced Ce/Al/sub 2/O/sub 3/ and CePd/Al/sub 2/O/sub 3/ catalysts capable of stabilizing H/sub 2/O, CO/sub 2/, and CO molecules in their coordination sphere. An interaction of cerium and palladium affecting their oxidation-reduction properties was detected in the Ce-Pd/Al/sub 2/O/sub 3/ catalysts. Palladium additives significantly reduce the temperature for the onset of the reduction of Ce/sup 4 +/ to Ce/sup 3 +/ ions by CO relative to Ce/Al/sub 2/O/sub 3/. The rate of reduction of Pd/sup 2 +/ ions is reduced in the presence of cerium.

• Research Organization: N.D. Zelinskii Institute of Organic Chemistry, Academy of Sciences of the USSR, Moscow
• OSTI ID: 6962410
• Journal Information: Kinet. Catal. (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (Engl. Transl.); (United States) Vol. 26:6; ISSN KICAA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTRA
ADSORPTION
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC EFFECTS
CERIUM
CERIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
LUMINESCENCE
METALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PALLADIUM
PHOTOLUMINESCENCE
PLATINUM METALS
RARE EARTH COMPOUNDS
RARE EARTHS
REDOX POTENTIAL
REDUCTION
SORPTION
SPECTRA
TRANSITION ELEMENTS