Molybdate and tungstate catalysts for methanol oxidation

Conference · Thu Sep 01 04:00:00 EDT 1983 · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)

OSTI ID:5410939

Machiels, C J; Chowdhry, U; Sleight, A W

Ferric, chromium and aluminium molybdates, as well as complete series of solid solutions of iron-chromium and iron-aluminium molybdates were synthesized using a solution technique. The homogeneity of the materials was confirmed by the use of transmission electron microscopy. Ferric tungstate was also synthesized. The crystalline pattern indicates the material is isomorphous with ferric molybdate and is monoclinic at room temperature. Ferric molybdate was found to be the most active catalyst for methanol oxidation. Experiments with oxygen 18 labelled compounds indicate that the reaction is of a redox type and that oxygen for O/sub 2/ and methanol does not readily exchange with the catalyst surface. The results show that water and formaldehyde exchange with the catalyst surface. On passing H/sub 2/ /sup 18/O at 300/sup 0/C over a mixture of molybdenum oxide and ferric molybdate, the /sup 18/O exchanged with bulk lattice oxygen of ferric molybdate. This result was confirmed by laser Raman spectroscopy. 1 figure.

• Research Organization: E.I. du Pont de Nemours and Co., Wilmington, DE
• OSTI ID: 5410939
• Report Number(s): CONF-830814-Vol.2
• Conference Information: Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 28:5
• Country of Publication: United States
• Language: English

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ALCOHOLS
ALDEHYDES
ALUMINIUM COMPOUNDS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
COHERENT SCATTERING
COMPARATIVE EVALUATIONS
DATA
DIFFRACTION
ELECTRON MICROSCOPY
ELEMENTS
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FORMALDEHYDE
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
IRON COMPOUNDS
ISOTOPES
ISOTOPIC EXCHANGE
KINETICS
LABELLING
LIGHT NUCLEI
METHANOL
MICROSCOPY
MOLYBDATES
MOLYBDENUM COMPOUNDS
NONMETALS
NUCLEI
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXYGEN
OXYGEN 18
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
RAMAN SPECTRA
REACTION KINETICS
SCATTERING
SPECTRA
STABLE ISOTOPES
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
TUNGSTATES
WATER
X-RAY DIFFRACTION
YIELDS