GB912826A - Improvements in or relating to the production of isoprene-containing material - Google Patents

Improvements in or relating to the production of isoprene-containing material

Info

Publication number
GB912826A
GB912826A GB1060261A GB1060261A GB912826A GB 912826 A GB912826 A GB 912826A GB 1060261 A GB1060261 A GB 1060261A GB 1060261 A GB1060261 A GB 1060261A GB 912826 A GB912826 A GB 912826A
Authority
GB
United Kingdom
Prior art keywords
isomerisation
effected
fraction
isoprene
demethanised
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
GB1060261A
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.)
BP PLC
Original Assignee
BP PLC
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 BP PLC filed Critical BP PLC
Priority to GB1060261A priority Critical patent/GB912826A/en
Publication of GB912826A publication Critical patent/GB912826A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C11/00—Aliphatic unsaturated hydrocarbons
    • C07C11/12—Alkadienes
    • C07C11/173—Alkadienes with five carbon atoms
    • C07C11/18—Isoprene
    • 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
    • C07C2/02—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons
    • C07C2/04—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation
    • C07C2/06—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation of alkenes, i.e. acyclic hydrocarbons having only one carbon-to-carbon double bond
    • C07C2/08—Catalytic processes
    • 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
    • C07C2521/18—Carbon
    • 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
    • C07C2523/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the alkali- or alkaline earth metals or beryllium
    • C07C2523/04—Alkali metals
    • 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
    • C07C2527/20—Carbon compounds
    • C07C2527/22—Carbides

Landscapes

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

Abstract

Isoprene is obtained by demethanising a C6 fraction, or a C6 fraction derived therefrom, obtained by dimerising propylene in the presence of a catalyst consisting of or comprising a lamellar complex of an alkali metal and carbon. The dimerisation is effected as described in Specifications 912,822, 912,823, 912,824 and 912,825. The product is fractionated to separate 2-methylpentene-2 which is demethanised. Alternatively the C6 product or a fraction thereof is isomerised and the isomerisate demethanised; unconverted C6 material is separated by distillation and recycled to the isomerisation or the isomerisate is fractionated to remove 4-methylpentene-2 which is returned to the isomerisation. Isomerisation is effected over silica/alumina or clays at 150-300 DEG C., over sodium on alumina at -150 to 150 DEG C., over phosphoric acid or pumice at 150-300 DEG C. or with heteropoly acids at 50-300 DEG C. Demethanisation is effected by pyrolysis at 600-1,000 DEG C. for 0.001-1 second in the presence of up to 10 mols of steam per mol of feed.
GB1060261A 1960-03-23 1960-03-23 Improvements in or relating to the production of isoprene-containing material Expired GB912826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1060261A GB912826A (en) 1960-03-23 1960-03-23 Improvements in or relating to the production of isoprene-containing material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1060261A GB912826A (en) 1960-03-23 1960-03-23 Improvements in or relating to the production of isoprene-containing material

Publications (1)

Publication Number Publication Date
GB912826A true GB912826A (en) 1962-12-12

Family

ID=9970875

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1060261A Expired GB912826A (en) 1960-03-23 1960-03-23 Improvements in or relating to the production of isoprene-containing material

Country Status (1)

Country Link
GB (1) GB912826A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006005252B4 (en) * 2006-02-02 2010-10-28 Thyssenkrupp Vdm Gmbh Molded part made of an iron-nickel-cobalt alloy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006005252B4 (en) * 2006-02-02 2010-10-28 Thyssenkrupp Vdm Gmbh Molded part made of an iron-nickel-cobalt alloy

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