Clustering of metal atoms in organic media. 9. High-activity Ni/MgO catalysts prepared by metal vapor methods. Surface area and particle size effects
Journal Article
·
· J. Catal.; (United States)
A metal vapor method was employed to prepare highly dispersed Ni metal catalysts (solvated metal atom dispersed = SMAD catalyst) supported on MgO. Compared with conventional Ni/MgO compositions, the SMAD catalysts showed much greater activities for all reactions studied (hydrogenolysis of methylcyclopentane, MCP; hydrogenation/hydrogenolysis of toluene, TOL; methanation of carbon monoxide, CO; dehydration of isopropyl alcohol, IPA). These high activities for the SMAD catalysts are attributed to the high surface area of Ni on MgO and the high percentage of this Ni in a zero-valent state (reduction degree). Conventional methods for preparing Ni/MgO catalysts did not yield nearly such favorable surface areas or reduction degrees. Nickel particle size effects were observed during hydrogenolysis studies of MCP and hydrogenation studies of TOL. These phenomena are explained by assuming the size of an active Ni particle to be largest for hydrogenolysis of MCP > hydrogenation of TOL > methanation of CO approx. = dehydrogenation of IPA. 8 figures, 2 tables.
- Research Organization:
- Kansas State Univ., Manhattan
- OSTI ID:
- 5711535
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 73:2; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Clustering of metal atoms in organic media. II. Effect of support on nickel catalysts prepared by solvated metal atom dispersion (SMAD)
Pt/MgO as catalyst for hydrogenolysis reactions of C[sub 5] and C[sub 6] hydrocarbons: Evidence for metal-support interactions
Reactions of n-hexane and methylcyclopentane over dispersed cobalt-rhodium catalysts: synergism in catalysis by alloys
Journal Article
·
Thu Feb 25 23:00:00 EST 1982
· J. Org. Chem.; (United States)
·
OSTI ID:5741470
Pt/MgO as catalyst for hydrogenolysis reactions of C[sub 5] and C[sub 6] hydrocarbons: Evidence for metal-support interactions
Journal Article
·
Wed Sep 01 00:00:00 EDT 1993
· Journal of Catalysis; (United States)
·
OSTI ID:5548180
Reactions of n-hexane and methylcyclopentane over dispersed cobalt-rhodium catalysts: synergism in catalysis by alloys
Journal Article
·
Fri Sep 01 00:00:00 EDT 1978
· Ind. Eng. Chem., Prod. Res. Dev.; (United States)
·
OSTI ID:6971170
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
ALCOHOLS
ALKALINE EARTH METAL COMPOUNDS
ALKANES
AROMATICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CYCLOALKANES
DEHYDRATION
ELEMENTS
FLUIDS
GASES
HYDROCARBONS
HYDROGENATION
HYDROXY COMPOUNDS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
METALS
METHANATION
NICKEL
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PROPANOLS
SIZE
SOLID CLUSTERS
SURFACE AREA
SURFACE PROPERTIES
SYNTHESIS
TOLUENE
TRANSITION ELEMENTS
VAPORS
400102* -- Chemical & Spectral Procedures
ALCOHOLS
ALKALINE EARTH METAL COMPOUNDS
ALKANES
AROMATICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CYCLOALKANES
DEHYDRATION
ELEMENTS
FLUIDS
GASES
HYDROCARBONS
HYDROGENATION
HYDROXY COMPOUNDS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
METALS
METHANATION
NICKEL
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PROPANOLS
SIZE
SOLID CLUSTERS
SURFACE AREA
SURFACE PROPERTIES
SYNTHESIS
TOLUENE
TRANSITION ELEMENTS
VAPORS