Study of the distribution and interaction of components in Ni-Cu/SiO/sub 2/ catalysts by thermoprogrammed reduction

Journal Article · Sat Aug 01 00:00:00 EDT 1987 · Kinet. Catal. (Engl. Transl.); (United States)

OSTI ID:5675764

Litvin, E E; Slinkin, A A; Arkhipov, P P; Lyubomilova, M V; Pimenov, V G

Thermoprogrammed reduction (TPR) has been used to investigate the reduction and post-reduction of passivated samples of nickel-oxide and nickel-copper-oxide systems, applied to SiO/sub 2/. It has been demonstrated that in the oxide systems the applied phases react differently with the support, whereby the surface and bulk Ni hydrosilicates are most difficult to reduce. The introduction of Cu has no effect on the reduction of these compounds. The formation of nickel-oxygen structures in the case of mild passivation is accompanied by a decrease in the reduction temperature. A promoting influence of Cu is observed in the reduction of nickel-copper-oxide phases that react weakly with the support.

• Research Organization: N.D. Zelinskii Institute of Organic Chemistry, Moscow, USSR
• OSTI ID: 5675764
• Journal Information: Kinet. Catal. (Engl. Transl.); (United States), Vol. 28:1; Other Information: Translated from Kinet. Katal.; 28: No. 1, 221-224(Jan-Feb 1987)
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CATALYSTS
MATERIALS TESTING
COPPER OXIDES
CATALYTIC EFFECTS
REDOX POTENTIAL
REDUCTION
TEMPERATURE EFFECTS
NICKEL OXIDES
CATALYST SUPPORTS
DEACTIVATION
HETEROGENEOUS CATALYSIS
HYDROCARBONS
PASSIVATION
PROMOTERS
SILICA
SPECTRA
CATALYSIS
CHALCOGENIDES
CHEMICAL REACTIONS
COPPER COMPOUNDS
MINERALS
NICKEL COMPOUNDS
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
TESTING
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties