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US 4,270,014 AGranted
Production of high energy fuel
AssigneeAshland Oil, Inc.
InventorsRichard V. Norton, Steven C. Howe
Life of this patent
Estimating the term…
Abstract
A method for converting endo-tetrahydrodicyclopentadiene to the corresponding exo isomeric form which is advantageously carried out in the presence of aluminum chloride catalyst and the spent nickel hydrogenation catalyst utilized in hydrogenating an endo dimer of cyclopentadiene to provide said tetrahydro derivative thereof.
Claims5
A process for the production of exo-tetrahydrodicyclopentadiene which comprises:
- (a) hydrogenating the endo dimer of cyclopentadiene containing a dispersed nickel hydrogenation catalyst to provide a crude endo-tetrahydrodicyclopentadiene derivative having a melting point of at least about 70.degree. C,;
- (b) contacting the crude product of (a) containing said catalyst with aluminum chloride and maintaining the contacted crude at a temperature of from about 100.degree.-150.degree. C. to effect the substantially complete conversion of said endo isomer to the corresponding exo isomer form;
- and
- (c) separating said exo isomer from the sludge component of the isomerization reaction mixture.
1 more element
Dependencies are inferred from the claim text.