Process for separating 1,4 cineoles from 1,8 cineoles

Details Process for separating 1,4 cineoles from 1,8 cineoles Process for separating 1,4 cineoles from 1,8 cineoles

1981-05-11

1982-08-31

Chan, Nicky

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549463, C07D31102, C07D30777

Patent

active

043471897

ABSTRACT:
A method of separating 1,4 cineole from a mixture containing 1,4 and 1,8 cineoles wherein the mixture is contacted with a zeolite having a constraint index of from 0.2 to 12 and having port sizes of approximately 6.7-7.0 angstroms. This causes the 1,4 cineole to be sorbed into the zeolite while the 1,8 cineole is excluded. The zeolite is then separated from the 1,8 cineole so that the 1,4 cineole may be desorbed from the zeolite. This desorbtion may be accomplished by heating the zeolite to a temperature above the boiling point of the cineole or by liquid phase displacement.

REFERENCES:
patent: 2315986 (1943-04-01), Scrutchfield
patent: 3923837 (1975-12-01), Davis
patent: 4096163 (1978-06-01), Chang et al.
Sand, Molecular Sieves, Society of Chemical Industry, 1968, pp. 71-77.

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