Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Patent
1992-08-10
1993-08-24
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
502 22, 502 31, 502 32, 502155, 502164, 549507, 549539, B01J 3140, B01J 3868, B01J 3848, C07D30728
Patent
active
052388891
ABSTRACT:
Disclosed is a process for the recovery of catalyst values from mixtures of catalyst compounds and oligomeric materials. The process provides for the separation of (i) an onium iodide compound, (ii) an organotin iodide compound, or (iii) a mixture thereof from a mixture thereof in an oligomer of a .gamma.,.delta.-epoxy-alkene by the steps of (1) intimately contacting the mixture with an extraction solvent selected from hydrocarbons having about 5 to 12 carbon atoms; (2) allowing the mixture of step (1) to separate into 2 phases; and (3) recovering the extraction solvent phase containing iodide compounds (i) and (ii). The oligomer mixture of compounds (i) and/or (ii) is formed during the manufacture of 2,5-dihydrofurans by the isomerization of .gamma.,.delta.-epoxyalkenes.
REFERENCES:
patent: 2680109 (1954-06-01), Stevens et al.
patent: 4946817 (1990-08-01), Bertram et al.
patent: 5082956 (1992-01-01), Monnier et al.
Falling Stephen N.
Godleski Stephen A.
McGarry Lynda W.
Eastman Kodak Company
Heath, Jr. William P.
Konopka Paul E.
Thomsen J. Frederick
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