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US 12,679,795 B2Granted
Production of acrolein or acrylic acid from iso-propanol with high yeild and low cost
AssigneeRohm and Haas Company
InventorsJinsuo Xu, Daniel A. Bors
Life of this patent
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Abstract
Acrolein is produced by selectively oxidizing iso-propanol over a first mixed metal oxide catalyst in the presence of oxygen in the vapor phase. The first mixed metal oxide catalyst comprises oxides of molybdenum and bismuth. Acrylic acid is produced by selectively oxidizing the acrolein over a second mixed metal oxide catalyst in the presence of oxygen in the vapor phase. The second mixed metal oxide catalyst has a different composition from the first mixed metal oxide catalyst.
Claims11
A method comprising:
- selectively oxidizing iso-propanol over a first mixed metal oxide catalyst in the presence of oxygen in the vapor phase to produce a first product comprising acrolein wherein a mass ratio of propionic acid to acrolein is less than 0.002, and
- selectively oxidizing the first product over a second mixed metal oxide catalyst in the presence of oxygen in the vapor phase to produce a second product comprising acrylic acid, wherein the second mixed metal oxide catalyst has a different composition from the first mixed metal oxide catalyst;
- wherein the first mixed metal oxide catalyst comprises oxides of molybdenum and bismuth, and wherein the second mixed metal oxide catalyst comprises oxides of molybdenum and vanadium.
Dependencies are inferred from the claim text.