Catalytic activity for the oxidation of methanol and the acid-base properties of metal oxides

Journal Article · Fri Oct 13 00:00:00 EDT 1978 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(78)90090-8· OSTI ID:6928324

Ai, M

The activity for the oxidation of 2.5 mole Vertical Bar3< methanol in air and the selectivity for formaldehyde was tested for numerous mixed metal oxides whose acid-base properties were characterized in previous publications by Ai. The results show that acidic oxides such as V/sub 2/O/sub 5/, MoO/sub 3/, WO/sub 3/, and U/sub 3/O/sub 8/ and various mixtures of them were active and selective, and that basic oxides such as TiO/sub 2/, SnO/sub 2/, Fe/sub 2/O/sub 3/, Bi/sub 2/O/sub 3/, ZnO, NiO, and Co/sub 3/O/sub 4/ and various mixtures of them were active but yielded primarily carbon dioxide. An analysis of the results suggested that acidity is a necessary but not sufficient condition for formaldehyde selectivity, since acid catalysts of low oxidation activity, e.g., WO/sub 3//P/sub 2/O/sub 5/, catalyzed mainly dehydration to dimethyl ether. On catalysts of very high acid strength, e.g., MoO/sub 3//SnO/sub 2/, the formaldehyde was oxidized further to yield significant amounts of formic acid and methyl formate.

• Research Organization: Tokyo Inst. of Technol.
• OSTI ID: 6928324
• Journal Information: J. Catal.; (United States), Vol. 54:33
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
METALS
CHEMICAL PROPERTIES
METHANOL
OXIDATION
OXIDES
CATALYSTS
CHEMICAL REACTION YIELD
MIXTURES
PH VALUE
TESTING
ALCOHOLS
CHALCOGENIDES
CHEMICAL REACTIONS
DISPERSIONS
ELEMENTS
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
YIELDS
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400301 - Organic Chemistry- Chemical &amp; Physicochemical Properties- (-1987)
400201 - Chemical &amp; Physicochemical Properties