Intermetallic compounds LaNi/sub 5/- /SUB x/ Cu /SUB x/ and their hydrides in the sorption of hydrogen and the hydrogenation of olefins
Journal Article
·
· Kinet. Catal. (Engl. Transl.); (United States)
OSTI ID:7222537
This paper studies the sorptive and catalytic properties of the intermetallic compounds (IMC) LaNi /SUB 5-x/ Cu /SUB x/ and also of their hydrides in the hydrogenation of propylene. The existence of an inverse dependence between the bond strength in the IMC-H system and the rate of formation of the alpha-phase of the hydrides was established. It was shown that the observed extremal dependence of the specific catalytic activity of the hydrides on composition is determined by the optimum value of the bond energy of the hydrogen in the IMC matrix. It was found that the rate of hydrogenation of an olefin on IMC hydrides follows a rate equation zero-order in hydrogen and first-order in olefin. In the case of the same IMC, on the contrary, the rate is first-order in H/sub 2/ and zero-order in C/sub 3/H/sub 6/. It is proposed that the sorptive and catalytic properties of the catalysts show the effect of the structure on the surface active center - a cluster.
- Research Organization:
- N.D. Zelinskii Institute of Organic Chemistry, Acad. of Sci., Moscow
- OSTI ID:
- 7222537
- Journal Information:
- Kinet. Catal. (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (Engl. Transl.); (United States) Vol. 26:2,PT.1; ISSN KICAA
- Country of Publication:
- United States
- Language:
- English
Similar Records
The adsorption, catalytic and structural characteristics of LaNi /SUB 5-x/ Co /SUB x/ intermetallic compounds and their hydrides -
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Journal Article
·
Wed Oct 01 00:00:00 EDT 1986
· Kinet. Catal. (Engl. Transl.); (United States)
·
OSTI ID:6962490
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Journal Article
·
Tue Jan 31 23:00:00 EST 1989
· Kinet. Catal. (Engl. Transl.); (United States)
·
OSTI ID:5914606
Catalytic and sorptional properties of LnNi/sub 5/ intermetallic compounds
Journal Article
·
Wed Dec 31 23:00:00 EST 1980
· Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States)
·
OSTI ID:5318776
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKENES
ALLOYS
BINDING ENERGY
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISORPTION
COPPER ALLOYS
COPPER COMPOUNDS
COPPER HYDRIDES
CRYSTAL STRUCTURE
ELEMENTS
ENERGY
HYDRIDES
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGENATION
INTERMETALLIC COMPOUNDS
KINETICS
LANTHANUM ALLOYS
LANTHANUM COMPOUNDS
LANTHANUM HYDRIDES
NICKEL ALLOYS
NICKEL COMPOUNDS
NICKEL HYDRIDES
NONMETALS
ORGANIC COMPOUNDS
PROPYLENE
RARE EARTH ALLOYS
RARE EARTH COMPOUNDS
REACTION KINETICS
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
400201* -- Chemical & Physicochemical Properties
ALKENES
ALLOYS
BINDING ENERGY
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISORPTION
COPPER ALLOYS
COPPER COMPOUNDS
COPPER HYDRIDES
CRYSTAL STRUCTURE
ELEMENTS
ENERGY
HYDRIDES
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGENATION
INTERMETALLIC COMPOUNDS
KINETICS
LANTHANUM ALLOYS
LANTHANUM COMPOUNDS
LANTHANUM HYDRIDES
NICKEL ALLOYS
NICKEL COMPOUNDS
NICKEL HYDRIDES
NONMETALS
ORGANIC COMPOUNDS
PROPYLENE
RARE EARTH ALLOYS
RARE EARTH COMPOUNDS
REACTION KINETICS
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS