GB841746A - Production of conjugated diolefins - Google Patents
Production of conjugated diolefinsInfo
- Publication number
- GB841746A GB841746A GB1129358A GB1129358A GB841746A GB 841746 A GB841746 A GB 841746A GB 1129358 A GB1129358 A GB 1129358A GB 1129358 A GB1129358 A GB 1129358A GB 841746 A GB841746 A GB 841746A
- Authority
- GB
- United Kingdom
- Prior art keywords
- olefine
- methylbutene
- formaldehyde
- mono
- aldehyde
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Conjugated diolefines are prepared by reaction in the vapour phase between a mono-olefine containing up to 6 carbon atoms and formaldehyde or acetaldehyde in the presence of a phosphate of an element of Group IIIB of the periodic table. The mono-olefine is preferably tertiary and may be isobutene, 2-methylbutene-2, or 2-methylbutene-1. The molar proportion of olefine to aldehyde may be 1 to 20:1. An inert diluent, amounting to up to 95% by volume of the gas mixture may be used, such as steam, nitrogen, carbon dioxide or a lower paraffin, e.g. by using formalin as a 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. Preferred catalysts are boron and aluminium phosphates supported if desired on silica, alumina, kieselguhr or surface active clays and may be regenerated by oxidation. Specifications 826,545 and 826,546 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1129358A GB841746A (en) | 1958-04-09 | 1958-04-09 | Production of conjugated diolefins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1129358A GB841746A (en) | 1958-04-09 | 1958-04-09 | Production of conjugated diolefins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB841746A true GB841746A (en) | 1960-07-20 |
Family
ID=9983569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1129358A Expired GB841746A (en) | 1958-04-09 | 1958-04-09 | Production of conjugated diolefins |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB841746A (en) |
-
1958
- 1958-04-09 GB GB1129358A patent/GB841746A/en not_active Expired
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