GB572821A - Improvements in and relating to the conversion of olefines into diolefines - Google Patents

Improvements in and relating to the conversion of olefines into diolefines

Info

Publication number
GB572821A
GB572821A GB135942A GB135942A GB572821A GB 572821 A GB572821 A GB 572821A GB 135942 A GB135942 A GB 135942A GB 135942 A GB135942 A GB 135942A GB 572821 A GB572821 A GB 572821A
Authority
GB
United Kingdom
Prior art keywords
space velocity
litres
diolefines
conversion
starting material
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
Application number
GB135942A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB135942A priority Critical patent/GB572821A/en
Publication of GB572821A publication Critical patent/GB572821A/en
Expired legal-status Critical Current

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
    • C07C5/32—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
    • C07C5/327—Formation of non-aromatic carbon-to-carbon double bonds only
    • C07C5/333—Catalytic processes
    • C07C5/3335—Catalytic processes with metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)

Abstract

Butylenes and pentenes are converted to diolefines by catalytic reaction in gaseous or vapour form in presence of a metallic hydrogenation-dehydrogenation catalyst at a space velocity of 0.3 to 1.0 litres of the starting material in its liquid state per litre active catalyst volume per hour under atmospheric pressure at 550-700 DEG C. If sub-atmospheric pressure is used or a non-reactive gas such as nitrogen, helium, steam, or methane is added, the minimum space velocity is 0.05 litre, the maximum space velocity still remaining at 1.0 litres as above for a partial pressure of the starting material of 100 mm. of mercury. The catalyst may be copper which has been oxidized and subsequently reduced. The first Provisional Specification refers to the conversion of trimethylethylene to isoprene and cyclopentene to cyclopentadiene. Specifications 307,945, [Class 2 (iii)], and 532,942 are referred to.
GB135942A 1942-02-02 1942-02-02 Improvements in and relating to the conversion of olefines into diolefines Expired GB572821A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB135942A GB572821A (en) 1942-02-02 1942-02-02 Improvements in and relating to the conversion of olefines into diolefines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB135942A GB572821A (en) 1942-02-02 1942-02-02 Improvements in and relating to the conversion of olefines into diolefines

Publications (1)

Publication Number Publication Date
GB572821A true GB572821A (en) 1945-10-25

Family

ID=9720644

Family Applications (1)

Application Number Title Priority Date Filing Date
GB135942A Expired GB572821A (en) 1942-02-02 1942-02-02 Improvements in and relating to the conversion of olefines into diolefines

Country Status (1)

Country Link
GB (1) GB572821A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1290134B (en) * 1963-06-06 1969-03-06 Monsanto Co Process for the production of olefins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1290134B (en) * 1963-06-06 1969-03-06 Monsanto Co Process for the production of olefins

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