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US 9,517,451 B2Granted
Preparation of propane oxidation catalysts
AssigneeRohm and Haas Company
InventorLeonard E. Bogan, Jr.
Life of this patent
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Abstract
A process for preparing a propane oxidation catalyst, the process comprising pre-calcining the catalyst precursor in an oxygen-containing gas at a temperature of less than 330° C. until the weight of the precursor stabilizes to obtain a pre-calcined precursor; then calcining the pre-calcined precursor to obtain the catalyst.
Claims9
A process for preparing a propane oxidation catalyst, the process comprising:
- (a) preparing a catalyst precursor;
- (b) pre-calcining the catalyst precursor in an oxygen-containing gas at a temperature of less than 330° C. until the weight of the precursor stabilizes to obtain a pre-calcined precursor;
- then (c) calcining the pre-calcined precursor to obtain the catalyst, wherein step (b) is maintained for at least 5 hours, and wherein the catalyst comprises an orthorhombic phase M1 and a pseudo-hexagonal phase M2, and wherein the amount of phase M2 in the catalyst is less than 12%.
Dependencies are inferred from the claim text.