GB841747A - Production of conjugated diolefines - Google Patents
Production of conjugated diolefinesInfo
- Publication number
- GB841747A GB841747A GB1129458A GB1129458A GB841747A GB 841747 A GB841747 A GB 841747A GB 1129458 A GB1129458 A GB 1129458A GB 1129458 A GB1129458 A GB 1129458A GB 841747 A GB841747 A GB 841747A
- Authority
- GB
- United Kingdom
- Prior art keywords
- methylbutene
- olefine
- formaldehyde
- aldehyde
- conjugated diolefines
- 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
- C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
- C07C2/86—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon
- C07C2/862—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon the non-hydrocarbon contains only oxygen as hetero-atoms
- C07C2/867—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon the non-hydrocarbon contains only oxygen as hetero-atoms the non-hydrocarbon is an aldehyde or a ketone
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- C07C2527/14—Phosphorus; Compounds thereof
- C07C2527/16—Phosphorus; Compounds thereof containing oxygen
- C07C2527/167—Phosphates or other compounds comprising the anion (PnO3n+1)(n+2)-
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Conjugated diolefines are prepared by the condensation in the vapour phase, of a monoolefine of up to 6 carbon atoms with formaldehyde or acetaldehyde in the presence of a phosphate of a Group II element. The olefine is preferably tertiary; suitable are isobutene, 2-methylbutene-2 and 2-methylbutene-1. The molar ratio of olefine to aldehyde may be between 1:1 and 20:1. Up to 95% by volume of the reactants may be an inert diluent, e.g. steam, nitrogen, carbon dioxide or a lower hydrocarbon, or by using formalin as the source of formaldehyde. The temperature may be 150-400 DEG C. and the space velocity 0,1-50 moles of aldehyde per litre of catalyst per hour. The preferred catalyst is cadmium phosphate supported on alumina or silica which may be regenerated by oxidation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1129458A GB841747A (en) | 1958-04-09 | 1958-04-09 | Production of conjugated diolefines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1129458A GB841747A (en) | 1958-04-09 | 1958-04-09 | Production of conjugated diolefines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB841747A true GB841747A (en) | 1960-07-20 |
Family
ID=9983586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1129458A Expired GB841747A (en) | 1958-04-09 | 1958-04-09 | Production of conjugated diolefines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB841747A (en) |
-
1958
- 1958-04-09 GB GB1129458A patent/GB841747A/en not_active Expired
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