GB778493A - Production of acrylic acid - Google Patents
Production of acrylic acidInfo
- Publication number
- GB778493A GB778493A GB498256A GB498256A GB778493A GB 778493 A GB778493 A GB 778493A GB 498256 A GB498256 A GB 498256A GB 498256 A GB498256 A GB 498256A GB 778493 A GB778493 A GB 778493A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acrylic acid
- catalyst
- inert gas
- vapour
- succinic anhydride
- 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
- C07C57/00—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
- C07C57/02—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
- C07C57/03—Monocarboxylic acids
- C07C57/04—Acrylic acid; Methacrylic acid
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
- C07C51/353—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by isomerisation; by change of size of the carbon skeleton
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Acrylic acid is produced by subjecting succinic anhydride vapour, either alone or together with an inert gas, to pyrolysis at 500-800 DEG C., preferably 650-750 DEG C. The reaction may take place in the presence of a catalyst such as iron filings, but generally no catalyst is required. It is preferred to employ a temperature of 700 DEG C. and a contact time of 1 to 2 seconds. In an example, succinic anhydride is pumped from a heated storage vessel to an evaporator and the vapour is mixed with an inert gas and passed through a vertical glass tube surrounded by a steel tube and heating element. Results show the conversion to acrylic acid at temperatures from 500-750 DEG C. and different contact times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB498256A GB778493A (en) | 1956-02-17 | 1956-02-17 | Production of acrylic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB498256A GB778493A (en) | 1956-02-17 | 1956-02-17 | Production of acrylic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB778493A true GB778493A (en) | 1957-07-10 |
Family
ID=9787515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB498256A Expired GB778493A (en) | 1956-02-17 | 1956-02-17 | Production of acrylic acid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB778493A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1195297B (en) * | 1962-01-25 | 1965-06-24 | Roehm & Haas Gmbh | Process for the production of acrylic acid esters by decarboxylating maleic and fumaric acid compounds |
-
1956
- 1956-02-17 GB GB498256A patent/GB778493A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1195297B (en) * | 1962-01-25 | 1965-06-24 | Roehm & Haas Gmbh | Process for the production of acrylic acid esters by decarboxylating maleic and fumaric acid compounds |
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