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1. (WO2013118011) SEPARATING XYLENE ISOMERS

Pub. No.:    WO/2013/118011    International Application No.:    PCT/IB2013/050593
Publication Date: Fri Aug 16 01:59:59 CEST 2013 International Filing Date: Fri Jan 25 00:59:59 CET 2013
IPC: C07C 7/152
C07C 15/08
C07F 15/04
Applicants: STELLENBOSCH UNIVERSITY
Inventors: LUSI, Matteo
BARBOUR, Leonard J
Title: SEPARATING XYLENE ISOMERS
Abstract:
A process is provided for the separation of at least one xylene isomer from a mixture with at least one other xylene isomer. The process involves the sorption of xylene as a guest into a host complex and desorption therefrom whereby at least a primary separation of the isomers is achieved. The host complex includes at least one solid octahedral metal complex of the general formula (Formula I) (I) in which M is a divalent metal, the four substituents R are selected independently of each other to provide the octahedral metal complex with required ligand properties, and X is one or more coordinating anions that may be the same or different. Contacting is carried out with the octahedral metal complex in a solid state and the xylene isomer mixture in the vapour phase.