GB996898A - Improvements in or relating to the production of acrylic acid - Google Patents
Improvements in or relating to the production of acrylic acidInfo
- Publication number
- GB996898A GB996898A GB2553363A GB2553363A GB996898A GB 996898 A GB996898 A GB 996898A GB 2553363 A GB2553363 A GB 2553363A GB 2553363 A GB2553363 A GB 2553363A GB 996898 A GB996898 A GB 996898A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reaction product
- stage
- acrolein
- propylene
- acrylic acid
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
- C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
- C07C45/33—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
- C07C45/34—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds
- C07C45/35—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds in propene or isobutene
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Acrylic acid is prepared by reacting in a first stage propylene with molecular oxygen at an elevated temperature in the vapour phase over an oxide composition containing tin and antimony to give a reaction product containing acrolein, separating unreacted propylene from said reaction product, and passing the remainder of the reaction product substantially free from propylene into a second stage in which acrolein is reacted with molecular oxygen at an elevated temperature in the vapour phase over a catalyst comprising cobalt molybdate to produce acrylic acid. The separation of unreacted propylene from the gaseous reaction product of the first stage can be effected by condensing said reaction product to separate acrolein as a liquid phase or by washing the reaction product with water to form an aqueous solution containing acrolein and subsequent fractional distillation of said solution to recover acrolein as a concentrated overhead fraction. In a preferred ebodiment the propylene separated from the first stage reaction product is recycled to the first reaction stage and the remainder of the reaction product is fractionally distilled to remove materials having a lower boiling point than acrolein, the base product of said fractionation being passed together with additional oxygen, and steam or other diluent if desired, to the second reaction stage. Reference has been directed by the Comptroller to Specifications 864,660, 878,802 and 953,763.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2553363A GB996898A (en) | 1963-06-27 | 1963-06-27 | Improvements in or relating to the production of acrylic acid |
| BE649732A BE649732A (en) | 1963-06-27 | 1964-06-25 | |
| FR979747A FR1399498A (en) | 1963-06-27 | 1964-06-26 | Acrylic acid production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2553363A GB996898A (en) | 1963-06-27 | 1963-06-27 | Improvements in or relating to the production of acrylic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB996898A true GB996898A (en) | 1965-06-30 |
Family
ID=10229219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2553363A Expired GB996898A (en) | 1963-06-27 | 1963-06-27 | Improvements in or relating to the production of acrylic acid |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE649732A (en) |
| GB (1) | GB996898A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0293224A1 (en) * | 1987-05-27 | 1988-11-30 | Nippon Shokubai Co., Ltd. | Process for production of acrylic acid |
| EP0442156A1 (en) | 1990-02-14 | 1991-08-21 | Luis Antonio Ruiz | Automatic corneal shaper |
| US5218146A (en) * | 1987-05-27 | 1993-06-08 | Nippon Shokubai Kagaku Kogyo Co., Ltd. | Process for production of acrylic acid |
-
1963
- 1963-06-27 GB GB2553363A patent/GB996898A/en not_active Expired
-
1964
- 1964-06-25 BE BE649732A patent/BE649732A/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0293224A1 (en) * | 1987-05-27 | 1988-11-30 | Nippon Shokubai Co., Ltd. | Process for production of acrylic acid |
| US5218146A (en) * | 1987-05-27 | 1993-06-08 | Nippon Shokubai Kagaku Kogyo Co., Ltd. | Process for production of acrylic acid |
| EP0442156A1 (en) | 1990-02-14 | 1991-08-21 | Luis Antonio Ruiz | Automatic corneal shaper |
Also Published As
| Publication number | Publication date |
|---|---|
| BE649732A (en) | 1964-10-16 |
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