GB573531A - Improvements in or relating to the reduction of the peracid content of oxidation reaction products - Google Patents
Improvements in or relating to the reduction of the peracid content of oxidation reaction productsInfo
- Publication number
- GB573531A GB573531A GB958741A GB958741A GB573531A GB 573531 A GB573531 A GB 573531A GB 958741 A GB958741 A GB 958741A GB 958741 A GB958741 A GB 958741A GB 573531 A GB573531 A GB 573531A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oxidation
- temperature
- oxygen
- reduced
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In the oxidation of acetaldehyde to acetic anhydride, the quantity of per-compounds present in the reaction mixture is p reduced to below 3 per cent by interrupting the oxidation, reducing the oxygen pressure, and raising the temperature above the oxidation temperature and within the limits 25-50 DEG C. If oxygen is the oxidizing atmosphere, the atmosphere during the reducing stage may be air or nitrogen. The oxidation may be effected continuously, a portion of the reaction mixture being withdrawn, reduced and returned to the reaction. In an example, a mixture of paraldehyde, vanadic acid (as depolymerizing agent) and p-toluene sulphonic acid is oxidized with oxygen at 33 DEG C. and 10 lb. pressure; after a time, the oxygen pressure is reduced and air admitted, the temperature being passed to 40 DEG C. In another example, nitrogen is used instead of air, the temperature being 43 DEG C. Specifications 443,151 and 446,259 are referred to. When the reaction product is worked up, remaining per-compounds may be removed by manganese salts or reducing agents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB958741A GB573531A (en) | 1941-07-28 | 1941-07-28 | Improvements in or relating to the reduction of the peracid content of oxidation reaction products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB958741A GB573531A (en) | 1941-07-28 | 1941-07-28 | Improvements in or relating to the reduction of the peracid content of oxidation reaction products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB573531A true GB573531A (en) | 1945-11-26 |
Family
ID=9874874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB958741A Expired GB573531A (en) | 1941-07-28 | 1941-07-28 | Improvements in or relating to the reduction of the peracid content of oxidation reaction products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB573531A (en) |
-
1941
- 1941-07-28 GB GB958741A patent/GB573531A/en not_active Expired
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