Process for producing allyl acetate
View Patent ↗A process for producing allyl acetate is disclosed. The process comprises reacting a feed comprising propylene, acetic acid, oxygen, and carbon dioxide in the presence of a supported palladium catalyst. The feed comprises from 2 to 6 mole percent carbon dioxide, which improves the selectivity to allyl acetate.
1. A process for producing allyl acetate, comprising reacting a feed comprising propylene, acetic acid, oxygen, and carbon dioxide in the presence of a supported palladium catalyst, wherein the feed comprises from 2 to 6 mol % carbon dioxide, further wherein the concentration of the carbon dioxide in the feed is controlled at a constant concentration.
2. The process of claim 1 wherein the feed comprises from 3 to 6 mol % carbon dioxide.
3. The process of claim 1 wherein the feed comprises from 4 to 6 mol % carbon dioxide.
4. The process of claim 1 wherein the feed comprises 1 to 4 mol % water.
5. The process of claim 1 wherein the feed comprises greater than 50 mol % propylene.
6. The process of claim 1 wherein the feed comprises an inert gas selected from the group consisting of propane, argon, nitrogen, and mixtures thereof.
7. The process of claim 6 wherein the feed comprises 10 to 55 mol % inert gas.
8. The process of claim 1 wherein the feed comprises 8 to 20 mol % acetic acid.
9. The process of claim 1 wherein the feed comprises from 2 to 8 mol % of oxygen.
10. The process of claim 1 wherein the concentration of the carbon dioxide is controlled by absorption.
11. The process of claim 1 wherein the concentration of the carbon dioxide is controlled by scrubbing.
12. The process of claim 1 wherein the concentration of the carbon dioxide is controlled by purge.
13. The process of claim 1 wherein propylene has a purity of at least 90 mol %.
14. A process for producing allyl acetate, comprising reacting a feed comprising propylene, acetic acid, oxygen, and carbon dioxide in the presence of a supported palladium catalyst, wherein the feed comprises from 2 to 6 mol % carbon dioxide, further wherein the concentration of the carbon dioxide in the feed is controlled at a constant concentration, wherein the selectivity to allyl acetate is improved when compared to a process wherein less than 2 mol % carbon dioxide is presented in the feed.
15. A process for producing allyl acetate, comprising reacting a feed comprising propylene, acetic acid, oxygen, and carbon dioxide in the presence of a supported palladium catalyst, wherein the feed comprises from 2 to 6 mol % carbon dioxide, further wherein the concentration of the carbon dioxide in the feed is controlled at a constant concentration, wherein the formation of carbon dioxide is suppressed when compared to a process wherein less than 2 mol % carbon dioxide is present in the feed.
16. The process of claim 1 wherein the palladium catalyst further comprises gold, copper, silver, or mixtures thereof.
17. The process of claim 1 wherein the palladium catalyst further comprises an activator.
18. The process of claim 17 wherein the activator is selected from the group consisting of a potassium salt, a cesium salt, and combinations thereof.
19. The process of claim 1 wherein the palladium catalyst further comprises a carrier.
20. The process of claim 19 wherein the carrier is alumina, silica, titania, carbon, or a mixture thereof.