Process for manufacturing acrolein/acrylic acid
US-9296676-B2 · Mar 29, 2016 · US
Production of acrolein or acrylic acid from iso-propanol with high yeild and low cost
US2024228417A9 · US · A9
| Field | Value |
|---|---|
| Publication number | US-2024228417-A9 |
| Application number | US-202218547716-A |
| Country | US |
| Kind code | A9 |
| Filing date | Mar 2, 2022 |
| Priority date | Mar 4, 2021 |
| Publication date | Jul 11, 2024 |
| Grant date | — |
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Abstract
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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.
First claim
Opening claim text (preview).
1 . 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 acrolein, wherein the first mixed metal oxide catalyst comprises oxides of molybdenum and bismuth. 2 . The method according to claim 1 , wherein a mass ratio of propionic acid to acrolein is less than 0.002. 3 . The method according to claim 1 , further comprising selectively oxidizing the acrolein over a second mixed metal oxide catalyst in the presence of oxygen in the vapor phase, wherein the second mixed metal oxide catalyst has a different composition from the first mixed metal oxide catalyst. 4 . The method according to claim 3 , wherein the second mixed metal oxide catalyst comprises oxides of molybdenum and vanadium. 5 . The method according to claim 4 , wherein the second mixed metal oxide catalyst further comprises at least one additional element selected from the group consisting of tungsten, copper, iron, antimony, and phosphorus. 6 . The method according to claim 1 , wherein the first mixed metal oxide catalyst further comprises at least one additional element selected from the group consisting of iron, cobalt, and nickel. 7 . The method according to claim 1 , wherein the oxygen is present in the form of purified oxygen, air, or lattice oxygen of the mixed metal oxide. 8 . The method according to claim 1 , wherein the iso-propanol is produced from biomass-derived feedstock. 9 . The method according to claim 1 , wherein the acrolein has a ratio of 14 C: 12 C of a least 0.5×10 −13 . 10 . The method according to claim 3 , wherein a mass ratio of propionic acid to acrylic acid is less than 0.001. 11 . The method according to claim 1 , wherein selectively oxidizing the iso-propanol occurs in the presence of steam. 12 . The method according to claim 3 , wherein selectively oxidizing the acrolein occurs in the presence of steam. 13 . The method according to claim 1 , further comprising recovering acrolein by one or more techniques selected from absorption using water or an organic solvent, extraction, fractional distillation, and melt crystallization. 14 . The method according to claim 3 , further comprising recovering acrylic acid by one or more techniques selected from absorption using water or an organic solvent, extraction, fractional distillation, and melt crystallization.
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Classifications
by distillation · CPC title
of propene, butenes, acrolein or methacrolein · CPC title
Nickel · CPC title
Cobalt · CPC title
Iron · CPC title
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- What does patent US2024228417A9 cover?
- 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 meta…
- Who is the assignee on this patent?
- Rohm & Haas
- What technology area does this patent fall under?
- Primary CPC classification C07C45/38. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jul 11 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A9). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).