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US 5,493,052 AGranted
Multimetal oxide compositions
AssigneeBASF SE
InventorsAndreas Tenten, Peter Weidlich
Life of this patent
Estimating the term…
Abstract
Multimetal oxide compositions which comprise, as basic constituents, the elements Mo, V, W, Cu and Ni in oxidic form in certain molar ratios, and the preparation of these multimetal oxide compositions, and their use as catalysts for the gas-phase catalytical oxidation of acrolein to acrylic acid.
Claims6
In a process for gas-phase catalytic oxidization of acrolein to acrylic acid, the improvement comprising using a multimetal oxide composition which comprises, as basic constituents, the elements Mo, V, W, Cu and Ni in oxidic form, with the proviso that the following molar ratios exist between the elements:
- Mo:V=12:1 to 2:1,
- Mo:W=60:1 to 3:1,
- Mo:Cu=24:1 to 2:1, and
- Cu:Ni=5:1 to 1:3.
1 more element
Dependencies are inferred from the claim text.