Morphology of molybdena supported on various oxides and its activity for methanol oxidation
- Nagoya Univ. (Japan)
This paper describes a method of benzaldehyde-ammonia titration (BAT) that can distinguish surfaces of supports and loaded oxides. Such a method has been found to be effective in examining the morphology of molybdena when held on a variety of supports; the results achieved are corroborated by spectroscopic and electron microscopic studies. A molybdena monolayer of tetrahedral or octahedral coordination was loaded at a surface concentration of < 7 nm{sup {minus}2}, with {le} 80% coverage, irrespective of the kind of support. On further loading, however, the MoO{sub 3} was not piled on the surface molybdate to form a multilayer but collected in the macropores of the support. Methanol oxidation to formaldehyde and methyl formate was then investigated with use of these catalysts, and the turnover frequency (TOF) was given on the basis of the discriminated surface area of the loaded oxide.
- OSTI ID:
- 6715765
- Journal Information:
- Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:4; ISSN 0022-3654; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
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& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400200 -- Inorganic
Organic
& Physical Chemistry
ALCOHOLS
CALCULATION METHODS
CATALYST SUPPORTS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DATA ANALYSIS
EXPERIMENTAL DATA
HYDROXY COMPOUNDS
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
METHANOL
MOLYBDENUM COMPOUNDS
MORPHOLOGY
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS