Method for product isolation and catalyst recovery in aluminum c

Details Method for product isolation and catalyst recovery in aluminum c Method for product isolation and catalyst recovery in aluminum c

1981-09-18

1983-01-04

Gantz, Delbert E.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By isomerization

585317, 585318, 585360, C07C 522

Patent

active

043673600

ABSTRACT:
A method is disclosed for extracting sym-octahydroanthracene (s-OHA) from a product isomer mixture formed by the aluminum chloride catalyzed isomerization of sym-octahydrophenanthrene (s-OHP). Isolation of the s-OHA product isomer is accomplished by contacting the reaction product mixture with a specified liquid hydrocarbon solvent into which the s-OHA product isomer and unconverted s-OHP isomer dissolve and separate from a residue. The undissolved residue comprises a complex made up of aluminum chloride catalyst and small amounts of the s-OHA and s-OHP isomers. This catalyst complex may be recycled into a fresh starting mixture of s-OHP isomer for catalysis of a subsequent s-OHP isomerization reaction.

REFERENCES:
patent: 3295922 (1967-01-01), Walker
patent: 3396203 (1968-08-01), Bushick
patent: 3637882 (1972-01-01), Bushick
Arnold et al., J. Am. Chem. Soc., 66, 960 (1944).

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