GB977146A - Process for dehydrogenating hydrocarbons - Google Patents
Process for dehydrogenating hydrocarbonsInfo
- Publication number
- GB977146A GB977146A GB2230461A GB2230461A GB977146A GB 977146 A GB977146 A GB 977146A GB 2230461 A GB2230461 A GB 2230461A GB 2230461 A GB2230461 A GB 2230461A GB 977146 A GB977146 A GB 977146A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrocarbon
- bromine
- mol
- total pressure
- metal
- 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
- C07C5/42—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor
- C07C5/54—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor with an acceptor system containing at least two compounds provided for in more than one of the sub-groups C07C5/44 - C07C5/50
- C07C5/56—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor with an acceptor system containing at least two compounds provided for in more than one of the sub-groups C07C5/44 - C07C5/50 containing only oxygen and either halogens or halogen-containing compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Hydrocarbons containing a >CH-CH< group are dehydrogenated by heating to 400-800 DEG C. in the vapour phase with at least 1/4 mol. of oxygen per mol. of hydrocarbon and an amount of a bromine-liberating material sufficient to provide more than 0.001 mol. of bromine per mol. of hydrocarbon, the partial pressure of the hydrocarbon being less than half the total pressure at a total pressure of one atmosphere or more and less than 10 inches mercury at a total pressure below one atmosphere, and in the presence of a metal, other than silver, gold or trans-uranic element, or an oxide, hydroxide or salt thereof. Preferred hydrocarbons are butenes and methylbutenes which yield butadiene and isoprene. The molar ratio of oxygen to hydrocarbon may be 0.25-5: 1 and of bromine 0.001-0.5: 1, the bromine-liberating material being bromine, hydrogen bromide or an organic bromide. Flow rates of hydrocarbon of 0.25-4 vol/vol/hour and contact times of 0.01 second to several minutes are used. Many catalysts are specified, metal halides and phosphates are particularly preferred. Where the catalyst is a metal, e.g. stainless steel, this may form the reaction chamber walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2230461A GB977146A (en) | 1961-06-20 | 1961-06-20 | Process for dehydrogenating hydrocarbons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2230461A GB977146A (en) | 1961-06-20 | 1961-06-20 | Process for dehydrogenating hydrocarbons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB977146A true GB977146A (en) | 1964-12-02 |
Family
ID=10177220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2230461A Expired GB977146A (en) | 1961-06-20 | 1961-06-20 | Process for dehydrogenating hydrocarbons |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB977146A (en) |
-
1961
- 1961-06-20 GB GB2230461A patent/GB977146A/en not_active Expired
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