Effects of interaction of disperse metal particles with support in catalysts prepared with the use of organometallic compounds. III. Comparison of properties of Ni/TiO/sub 2/ and (Ni + Ti)/SiO/sub 2/

Journal Article · Mon Feb 01 00:00:00 EST 1988 · Kinet. Catal. (Engl. Transl.); (United States)

OSTI ID:6773746

Ryndin, Yu A; Alekseev, O S; Vasileva, M N; Zaikovskii, V I; Ermakov, Yu I

A study has been made of the state of the components and the catalytic properties of (Ni + Ti)/SiO/sub 2/ obtained by decomposition of anchored Ni and Ti complexes. According to the results obtained in chemisorption measurements and electron microscopic examination, these catalysts contain nickel particles smaller than 10 A and also surface Ti/sup n+/ ions (n = 2-3). The activity in hydrogenation of CO and the selectivity in forming higher hydrocarbons are considerably higher for the (Ni + Ti)/SiO/sub 2/ and Ni/TiO/sub 2/ in comparison with Ni/SiO/sub 2/; this difference can be attributed to interaction of a certain fraction of the nickel atoms with titanium ions, forming Ni-Ti/sup n/sup +// bonds. Preoxidation breaks these bonds, and the activity drops off sharply.

• Research Organization: Institute of Catalysis, Novosibirsk (USSR)
• OSTI ID: 6773746
• Journal Information: Kinet. Catal. (Engl. Transl.); (United States), Vol. 28:4; Other Information: Translated from Kinet. Katal; 28: No. 4, 900-907(Jul-Aug 1987)
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BENZENE
HETEROGENEOUS CATALYSIS
HYDROGENATION
CARBON MONOXIDE
NICKEL
CATALYTIC EFFECTS
SILICON OXIDES
TITANIUM
TITANIUM OXIDES
BINDING ENERGY
CATALYST SUPPORTS
CATALYSTS
CHEMISORPTION
DEACTIVATION
ELECTRON MICROSCOPY
ETHANE
HYDROCARBONS
MATERIALS TESTING
NICKEL COMPLEXES
ORGANOMETALLIC COMPOUNDS
SORPTIVE PROPERTIES
TITANIUM COMPLEXES
ALKANES
AROMATICS
CARBON COMPOUNDS
CARBON OXIDES
CATALYSIS
CHALCOGENIDES
CHEMICAL REACTIONS
COMPLEXES
ELEMENTS
ENERGY
METALS
MICROSCOPY
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SILICON COMPOUNDS
SORPTION
SURFACE PROPERTIES
TESTING
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
400201* - Chemical & Physicochemical Properties