GB916057A - Improvements in and relating to the hydrogenation of acetylenes - Google Patents
Improvements in and relating to the hydrogenation of acetylenesInfo
- Publication number
- GB916057A GB916057A GB2276459A GB2276459A GB916057A GB 916057 A GB916057 A GB 916057A GB 2276459 A GB2276459 A GB 2276459A GB 2276459 A GB2276459 A GB 2276459A GB 916057 A GB916057 A GB 916057A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stage
- acetylenes
- catalyst
- hydrogen
- olefins
- 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
- C07C5/02—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation
- C07C5/08—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation of carbon-to-carbon triple bonds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
- C07C2521/02—Boron or aluminium; Oxides or hydroxides thereof
- C07C2521/04—Alumina
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
- C07C2523/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals of the platinum group metals
- C07C2523/44—Palladium
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)
- Catalysts (AREA)
Abstract
The selective hydrogenation of acetylenes in a gas mixture containing olefins e.g. ethylene and propylene is effected in a first stage with hydrogen in excess of that required to hydrogenate the acetylenes to olefins over a catalyst comprising palladium supported on alumina having a mean pore radius (method of determination described) not less than 100 the hydrogen content of the mixture is then adjusted to 2-3 moles per mole of acetylene and the mixture passed in a second stage over palladium supported on active alumina. The first stage catalyst preferably has a pore radius below 1400 and a surface area of 5-65 square metres per gram and is made as described in Specification 916,056 e.g. by heating active alumina at 800-1300 DEG C. for 2-6 hours. Each catalyst may contain up to 5% palladium e.g. 0.01-0.4%, the first stage catalyst preferably containing less than the second. The feed preferably contains less than 2% of acetylenes and 0.5% C4 and higher olefins and in the first stage may contain a considerable excess of hydrogen. The feed to the second stage preferably contains less than 0.1% acetylenes and the hydrogen content may be adjusted by removing the hydrogen after the first stage and adding the required amount. Suitable conditions are 15-500 p.s.i.g., 1,000-15,000 litres of gas (20 DEG C. and atmospheric pressure) per litre of catalyst filled space per hour and 40-200 DEG C., preferably lower in the second than the first stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2276459A GB916057A (en) | 1959-06-02 | 1959-06-02 | Improvements in and relating to the hydrogenation of acetylenes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2276459A GB916057A (en) | 1959-06-02 | 1959-06-02 | Improvements in and relating to the hydrogenation of acetylenes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB916057A true GB916057A (en) | 1963-01-16 |
Family
ID=10184708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2276459A Expired GB916057A (en) | 1959-06-02 | 1959-06-02 | Improvements in and relating to the hydrogenation of acetylenes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB916057A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1290930B (en) * | 1965-03-18 | 1969-03-20 | Basf Ag | Process for the removal of small amounts of acetylene from hydrocarbon mixtures consisting essentially of ethylene by selective hydrogenation |
| FR2458524A1 (en) * | 1979-06-08 | 1981-01-02 | Inst Francais Du Petrole | METHOD FOR SELECTIVE HYDROGENATION OF A FRACTION OF HYDROCARBONS CONTAINING 2 OR 3 CARBON ATOMS BY MOLECULE |
-
1959
- 1959-06-02 GB GB2276459A patent/GB916057A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1290930B (en) * | 1965-03-18 | 1969-03-20 | Basf Ag | Process for the removal of small amounts of acetylene from hydrocarbon mixtures consisting essentially of ethylene by selective hydrogenation |
| FR2458524A1 (en) * | 1979-06-08 | 1981-01-02 | Inst Francais Du Petrole | METHOD FOR SELECTIVE HYDROGENATION OF A FRACTION OF HYDROCARBONS CONTAINING 2 OR 3 CARBON ATOMS BY MOLECULE |
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