GB935600A - Production of conjugated diolefines - Google Patents

Production of conjugated diolefines

Info

Publication number
GB935600A
GB935600A GB1577961A GB1577961A GB935600A GB 935600 A GB935600 A GB 935600A GB 1577961 A GB1577961 A GB 1577961A GB 1577961 A GB1577961 A GB 1577961A GB 935600 A GB935600 A GB 935600A
Authority
GB
United Kingdom
Prior art keywords
stage
cooling
effected
stages
catalyst
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
GB1577961A
Inventor
David James Hadley
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.)
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
Distillers Co Yeast Ltd
Distillers Co Ltd
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 Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical Distillers Co Yeast Ltd
Priority to GB1577961A priority Critical patent/GB935600A/en
Publication of GB935600A publication Critical patent/GB935600A/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
    • C07C5/42—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor
    • C07C5/48—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor with oxygen as an acceptor

Landscapes

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

Abstract

In the production of diolefins by reacting a mono-olefin having a chain of at least four carbon atoms in the vapour phase with oxygen over a catalyst, the reaction is effected in a plurality of stages with inter-stage cooling, excessive temperature rise being prevented by control of the amount of catalyst in each stage and/or the inlet temperature of each stage. Cooling is effected by cooling coils or by direct spraying with water. Butenes form butadiene and 2-methylbutene-2 forms isoprene in the presence of bismuth molybdate or phosphotungstate or tin antimonate which may be supported on silica. Steam, nitrogen, carbon dioxide or paraffins may be present as diluents. In an example a butene/air/steam mixture is preheated to 372 DEG C. and passed through three stages; the outlet temperature of the first is 422 DEG C. and the reactants are cooled to 339 DEG C., the outlet of the second is 426 DEG C. and gases are cooled to 318 DEG C. and the final temperature is 408 DEG C. Specification 902,952 is referred to.
GB1577961A 1961-05-02 1961-05-02 Production of conjugated diolefines Expired GB935600A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1577961A GB935600A (en) 1961-05-02 1961-05-02 Production of conjugated diolefines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1577961A GB935600A (en) 1961-05-02 1961-05-02 Production of conjugated diolefines

Publications (1)

Publication Number Publication Date
GB935600A true GB935600A (en) 1963-08-28

Family

ID=10065319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1577961A Expired GB935600A (en) 1961-05-02 1961-05-02 Production of conjugated diolefines

Country Status (1)

Country Link
GB (1) GB935600A (en)

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