SU462812A1 - The method of joint production of phenol, acetone and methyl methyl styrene - Google Patents
The method of joint production of phenol, acetone and methyl methyl styreneInfo
- Publication number
- SU462812A1 SU462812A1 SU1764738A SU1764738A SU462812A1 SU 462812 A1 SU462812 A1 SU 462812A1 SU 1764738 A SU1764738 A SU 1764738A SU 1764738 A SU1764738 A SU 1764738A SU 462812 A1 SU462812 A1 SU 462812A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- methyl
- phenol
- acetone
- joint production
- styrene
- Prior art date
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
(54) СПОСОБ СОВМЕСТНОГО ПОЛУЧЕНИЯ И а-МЕТИЛСТИРОЛА ФЕНОЛА, АЦЕТОНА(54) METHOD OF JOINT PREPARATION AND a-METHYL-STYROL PHENOL, ACETONE
при кислотном разложении 90%-ной гидроперекиси изопропилбензола примерно через 1 мин.after acid decomposition of 90% isopropyl benzene hydroperoxide after about 1 minute.
Из реактора через сифон непрерывно со скоростью 200 мл/час вывод т реакционную смесь, причем длительность ее контакта с кислотой в реакторе 3 мин.A siphon from the reactor was continuously withdrawn at a rate of 200 ml / hour, the reaction mixture was removed, and the duration of its contact with the acid in the reactor was 3 minutes.
Полученную реакционную массу с температурой 60°С обрабатывают 2-2,3%-ным раствором щелочи до рН среды 6,5-7,0.The resulting reaction mass with a temperature of 60 ° C is treated with 2-2.3% alkali solution to a pH of 6.5-7.0.
Дл сравнени провод т процесс, как описано выше, но после контактировани с серной кислотой в течение 3 мин гор чую реакционную массу выдерживают при 60°С в течение 4 час, а затем нейтрализуют водным раствором едкого натра до рН 6,5-7,0. Реакционна масса, полученна по предлагаемому способу, содержит (в вес. %): фенол 52,7; хметнлстирол 4,2; кумилфенол отсутствует; диметилфенилкарбинол 2,5; гидроперекись елеДы . Реакционна масса, полученна по известному способу, имеет следующий состав (в вес. %): фенол 50,3; а-метилстирол 0,5; кумилфенол 5,6; диметилфенилкарбинол отсутствует , гидроперекись кумола 0,1.For comparison, the process is carried out as described above, but after contacting with sulfuric acid for 3 minutes, the hot reaction mass is maintained at 60 ° C for 4 hours, and then neutralized with an aqueous solution of sodium hydroxide to pH 6.5-7.0 . The reaction mass obtained by the proposed method contains (in wt.%): Phenol 52,7; hmetnstyryol 4,2; cumylphenol is absent; dimethylphenylcarbinol 2.5; hydroperoxide oil The reaction mass obtained by a known method has the following composition (in wt.%): Phenol 50.3; a-methylstyrene 0.5; cumylphenol 5.6; dimethylphenylcarbinol is absent, cumene hydroperoxide is 0.1.
Предмет изобретени Subject invention
Способ совместного получени фенола, ацетона и «-метилстирола разложением смеси гидроперекиси кумола и диметилфенилкарбинола при нагревании в присутствии катализатора - серной кислоты с применением охлаждени реакционной массы и нейтрализации присутствующей в ней серной кислоты с последующим выделением целевых продуктов известными приемами, отличающийс тем, что, с целью повыщени выхода фенола и а-метилстирола , гор чую реакционную массу нейтрализуют непосредственно через 2-3 мин после завершени процесса разложени с последующим ее охлаждением.The method of joint preparation of phenol, acetone and α-methylstyrene by decomposition of a mixture of cumene hydroperoxide and dimethylphenylcarbinol by heating in the presence of a catalyst — sulfuric acid, using cooling the reaction mass and neutralizing the sulfuric acid present in it, with the following In order to increase the yield of phenol and α-methylstyrene, the hot reaction mass is neutralized immediately after 2-3 minutes after completion of the decomposition process, followed by they cooled it.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1764738A SU462812A1 (en) | 1972-03-28 | 1972-03-28 | The method of joint production of phenol, acetone and methyl methyl styrene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1764738A SU462812A1 (en) | 1972-03-28 | 1972-03-28 | The method of joint production of phenol, acetone and methyl methyl styrene |
Publications (1)
Publication Number | Publication Date |
---|---|
SU462812A1 true SU462812A1 (en) | 1975-03-05 |
Family
ID=20508176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1764738A SU462812A1 (en) | 1972-03-28 | 1972-03-28 | The method of joint production of phenol, acetone and methyl methyl styrene |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU462812A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004058672A1 (en) * | 2002-12-16 | 2004-07-15 | Exxonmobil Chemical Patents Inc. | Co-production of phenol, acetone, alpha-methylstyrene and propylene oxide, and catalyst therefor |
-
1972
- 1972-03-28 SU SU1764738A patent/SU462812A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004058672A1 (en) * | 2002-12-16 | 2004-07-15 | Exxonmobil Chemical Patents Inc. | Co-production of phenol, acetone, alpha-methylstyrene and propylene oxide, and catalyst therefor |
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