SU149421A1 - The method of producing acetaldehyde - Google Patents
The method of producing acetaldehydeInfo
- Publication number
- SU149421A1 SU149421A1 SU732414A SU732414A SU149421A1 SU 149421 A1 SU149421 A1 SU 149421A1 SU 732414 A SU732414 A SU 732414A SU 732414 A SU732414 A SU 732414A SU 149421 A1 SU149421 A1 SU 149421A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- acetaldehyde
- acetic acid
- producing acetaldehyde
- hydrolysis
- diethylene glycol
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Известны способы получени ацетальдегида гидролизом виниловых эфиров гликолей, например диэтиленгликол . Однако получаемый при этом ацетальдегид требует дополнительной очистки перед окислением его в уксусную кислоту.Methods for the preparation of acetaldehyde by the hydrolysis of glycol vinyl ethers, for example diethylene glycol, are known. However, the resulting acetaldehyde requires additional purification before oxidizing it to acetic acid.
Предлагаемый способ отличаетс тем; что гидролиз ведут в слабом растворе уксусной кислоты. Это позвол ет получать более чистый ацетальдегид и упростить процесс окислени его в уксусную кислоту.The proposed method differs in that; that the hydrolysis of lead in a weak solution of acetic acid. This makes it possible to produce more pure acetaldehyde and simplify the process of oxidizing it to acetic acid.
При осуществлении способа гидролиз дивинилового эфира диэтиленгликол ведут в присутствии 5%-ного раствора уксусной кислоты с отгонкой целевого продукта -при температуре реакции 60-70°.In the process, the hydrolysis of diethylene glycol divinyl ether is carried out in the presence of a 5% aqueous solution of acetic acid and the desired product is distilled off at a reaction temperature of 60-70 °.
Пример. В трехгорлую колбу, снабженную мешалкой, обратным холодильником и термометром, загружают 750 мл 5%-ного раствора уксусной кислоты. Затем добавл ют 615 г дивинилового эфира диэтиленгликол , смешанного с водой в соотношении 2 мол воды на 1 моль эфира. Температуру реакции поддерживают равной 60-70°.Example. In a three-necked flask equipped with a stirrer, a reflux condenser, and a thermometer, 750 ml of a 5% acetic acid solution are charged. Then 615 g of diethylene glycol divinyl ether mixed with water in a ratio of 2 mol of water per 1 mol of ether is added. The reaction temperature is maintained at 60-70 °.
Образующийс ацетальдегид непрерывно вывод т через обратный холодильник из зоны реакции и собирают в емкости, охлаждаемые лед ной водой.The resulting acetaldehyde is continuously removed through a reflux condenser from the reaction zone and collected in containers cooled with ice water.
Выход 96%-ного ацетальдегида - 94% (от теоретического).The yield of 96% acetaldehyde is 94% (from theoretical).
Примеси: вода - 3,9%, уксусна кислота - следы.Impurities: water - 3.9%, acetic acid - traces.
Предмет изобретени Subject invention
Способ получени ацетальдегида гидролизом виниловых - эфиров гликолей, например диэтиленгликол , с отгонкой ацетальдегида из реакционной смеси при температуре реакции, отличающийс тем, что, дл упрощени последующего процесса окислени ацетальдегида в уксусную кислоту, гидролиз ведут в слабом растворе уксусной кислоты.A method of producing acetaldehyde by hydrolyzing vinyl esters of glycols, such as diethylene glycol, with distillation of acetaldehyde from the reaction mixture at a reaction temperature, characterized in that, to simplify the subsequent oxidation of acetaldehyde to acetic acid, hydrolysis is carried out in a weak acetic acid solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU732414A SU149421A1 (en) | 1961-05-30 | 1961-05-30 | The method of producing acetaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU732414A SU149421A1 (en) | 1961-05-30 | 1961-05-30 | The method of producing acetaldehyde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU149421A1 true SU149421A1 (en) | 1961-11-30 |
Family
ID=48304548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU732414A SU149421A1 (en) | 1961-05-30 | 1961-05-30 | The method of producing acetaldehyde |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU149421A1 (en) |
-
1961
- 1961-05-30 SU SU732414A patent/SU149421A1/en active
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