Kinetic model of the reduction of a vanadium-molybdenum oxide catalyst with allyl alcohol

Journal Article · Sun May 01 04:00:00 EDT 1988 · Kinet. Catal. (Engl. Transl.); (United States)

OSTI ID:6046809

Makarova, M A; Rozentuller, B V; Krylov, O V

The kinetics of the reduction of V-MoO/sub 3/ catalyst with allyl alcohol is studied by a relaxation method. It is shown that after relaxation the reduction rate rises because of an increase of the concentration of reactive oxygen in the near-surface layer. A kinetic model of the reduction of the catalyst that takes into consideration diffusion of oxygen to the surface is offered. The model is in agreement with experiment. Kinetic parameters of the diffusion of oxygen and surface relaxation are determined. It is shown that diffusion is characterized by high rates under the reaction conditions. The vacancy concentration gradient that is formed in the course of reduction is calculated, along with the time needed for it to even out during relaxation of the catalyst.

• Research Organization: Institute of Chemical Physics, Moscow (USSR)
• OSTI ID: 6046809
• Journal Information: Kinet. Catal. (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (Engl. Transl.); (United States) Vol. 28:6; ISSN KICAA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACROLEIN
ACTIVATION ENERGY
ALCOHOLS
ALDEHYDES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DIFFUSION
ELEMENTS
ENERGY
HYDROXY COMPOUNDS
KINETICS
MATHEMATICAL MODELS
METALS
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
POINT DEFECTS
REACTION KINETICS
REDUCTION
REFRACTORY METAL COMPOUNDS
RELAXATION TIME
THERMODYNAMICS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VACANCIES
VALENCE
VANADIUM