GB977233A - Isomerization - Google Patents
IsomerizationInfo
- Publication number
- GB977233A GB977233A GB562963A GB562963A GB977233A GB 977233 A GB977233 A GB 977233A GB 562963 A GB562963 A GB 562963A GB 562963 A GB562963 A GB 562963A GB 977233 A GB977233 A GB 977233A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrogen halide
- bromide
- ethylbutadiene
- methylpentadiene
- steam
- 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
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/22—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by isomerisation
- C07C5/23—Rearrangement of carbon-to-carbon unsaturated bonds
- C07C5/25—Migration of carbon-to-carbon double bonds
- C07C5/2506—Catalytic processes
- C07C5/2525—Catalytic processes with inorganic acids; with salts or anhydrides of acids
- C07C5/2543—Acids of halogen; Salts thereof
- C07C5/255—Metal halides; Complexes thereof with organic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
2-ethylbutadiene-1,3 is obtained by isomerisation of 3-methylpentadiene-1,3 at 400 DEG -1,000 DEG C. and 10 mm.-300 p.s.i.g. for 0.001-2 seconds in the presence of a hydrogen halide or substance yielding a hydrogen halide under the reaction conditions. The catalyst may be used in amounts of 1-50% by weight of the hydrocarbon feed. Suitable hydrogen halide precursors include ethyl bromide, propyl bromide, carbon tetrachloride, carbon tetrabromide, benzyl chloride or bromide, chlorine, bromine, iodine or fluorine. A diluent is preferably added e.g. carbon dioxide, methane, nitrogen, ethane, propane, benzene or toluene or steam or a mixture of steam with any of the other mentioned diluents, in a total amount of 1-15 mols. of diluent per mol. of hydrocarbon feed. Product ethylbutadiene may be separated and unconverted methylpentadiene recycled.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19597162A | 1962-05-18 | 1962-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB977233A true GB977233A (en) | 1964-12-02 |
Family
ID=22723592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB562963A Expired GB977233A (en) | 1962-05-18 | 1963-02-12 | Isomerization |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB977233A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4762962A (en) * | 1987-06-08 | 1988-08-09 | The Goodyear Tire & Rubber Company | Process for the isomerization of branched dienes |
-
1963
- 1963-02-12 GB GB562963A patent/GB977233A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4762962A (en) * | 1987-06-08 | 1988-08-09 | The Goodyear Tire & Rubber Company | Process for the isomerization of branched dienes |
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