Kinetics and preparation of Fe/Mo catalysts for methanol oxidation to formaldehyde
Conference
·
· 72nd AIChE Annu. Meet. Prepr.; (United States)
OSTI ID:6275557
- Univ. Nac. Auton. Mex.
Oxidation of methanol to formaldehyde at 230/sup 0/ and 260/sup 0/C on a commercial Monsanto Co. catalyst containing 86.6% of molybdenum as an atomic ratio to the total content of molybdenum and iron was first order in methanol and zero in oxygen in a Notre Dame type spinning basket reactor. The rate expression obtained should be useful for reactor design and scale-up. Experimental catalysts prepared by coprecipitation from acid solutions of ferric chloride and ammonium heptamolybdate at 90/sup 0/C by adding the latter to the first contained two phases, molybdenum trioxide and ferric molybdate. Activity and selectivity profiles as a function of space velocity showed optimum performance for a catalyst containing 80.2% molybdenum with respect to total molybdenum and iron content and containing two moles of molybdenum oxide for one mole of ferric molybdate. Further heating of this sample at 440/sup 0/C for two hours in air improved selectivity from 68 to 96%.
- OSTI ID:
- 6275557
- Report Number(s):
- CONF-791108-
- Conference Information:
- Journal Name: 72nd AIChE Annu. Meet. Prepr.; (United States) Journal Volume: P-5E
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALCOHOLS
ALDEHYDES
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COMPLEXES
DATA
DESIGN
EXPERIMENTAL DATA
FORMALDEHYDE
HYDROXY COMPOUNDS
INFORMATION
IRON COMPLEXES
KINETICS
METHANOL
MOLYBDENUM COMPLEXES
NUMERICAL DATA
OPTIMIZATION
ORGANIC COMPOUNDS
OXIDATION
REACTION KINETICS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
400201 -- Chemical & Physicochemical Properties
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALCOHOLS
ALDEHYDES
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COMPLEXES
DATA
DESIGN
EXPERIMENTAL DATA
FORMALDEHYDE
HYDROXY COMPOUNDS
INFORMATION
IRON COMPLEXES
KINETICS
METHANOL
MOLYBDENUM COMPLEXES
NUMERICAL DATA
OPTIMIZATION
ORGANIC COMPOUNDS
OXIDATION
REACTION KINETICS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES