GB855189A - Process for preparing aldehydes by isomerization of alpha-olefine oxides - Google Patents
Process for preparing aldehydes by isomerization of alpha-olefine oxidesInfo
- Publication number
- GB855189A GB855189A GB358/57A GB35857A GB855189A GB 855189 A GB855189 A GB 855189A GB 358/57 A GB358/57 A GB 358/57A GB 35857 A GB35857 A GB 35857A GB 855189 A GB855189 A GB 855189A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oxide
- olefine
- acid
- reactor
- reaction
- 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
- C07C47/00—Compounds having —CHO groups
- C07C47/02—Saturated compounds having —CHO groups bound to acyclic carbon atoms or to hydrogen
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C47/00—Compounds having —CHO groups
- C07C47/20—Unsaturated compounds having —CHO groups bound to acyclic carbon atoms
- C07C47/21—Unsaturated compounds having —CHO groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C47/00—Compounds having —CHO groups
- C07C47/20—Unsaturated compounds having —CHO groups bound to acyclic carbon atoms
- C07C47/21—Unsaturated compounds having —CHO groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
- C07C47/22—Acryaldehyde; Methacryaldehyde
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Aldehydes are manufactured by the isomerization of a -olefine oxides at elevated temperature in the presence of a weakly acid catalyst, the a -olefine oxide used being diluted with the corresponding aldehyde to dissipate the heat of reaction. The process may be carried out continuously by mixing some of the aldehyde product with fresh olefine oxide and recirculating the mixture to the reactor. Olefine oxides which may be used as starting materials are, for example, ethylene oxide, propylene oxide 1.2-butylene oxide and styrene oxide. Preferably the proportion of oxide to aldehyde in the mixture entering the reactor is between 1 : 4 and 1 : 20 by weight. Suitable catalysts are, for example, potassium bisulphate, acid salts of phosporic acid or molybdenic acid, silica, alumina, alums or other double salts having an acid reaction such as potassium aluminium sulphate, sodium iron sulphate or potassium magnesium sulphate. The preferred temperature range for the reaction is 150 DEG -450 DEG C. If the cycled quantity of aldeyhyde is below that which corresponds to the total amount of heat to be dissipated some water may be introduced into the reactor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE855189X | 1956-01-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB855189A true GB855189A (en) | 1960-11-30 |
Family
ID=6789034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB358/57A Expired GB855189A (en) | 1956-01-05 | 1957-01-03 | Process for preparing aldehydes by isomerization of alpha-olefine oxides |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB855189A (en) |
-
1957
- 1957-01-03 GB GB358/57A patent/GB855189A/en not_active Expired
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