Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent
Reexamination Certificate
2005-12-20
2010-06-08
Mayes, Melvin C (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
C502S150000, C502S027000, C502S022000, C502S031000, C502S029000, C423S484000, C423S488000, C585S723000, C585S724000, C585S730000, C585S809000
Reexamination Certificate
active
07732363
ABSTRACT:
A process for regenerating a used acidic catalyst which has been deactivated by conjunct polymers by removing the conjunct polymers so as to increase the activity of the catalyst is disclosed. Methods for removing the conjunct polymers include hydrogenation, addition of a basic reagent and alkylation. The methods are applicable to all acidic catalysts and are described with reference to certain ionic liquid catalysts.
REFERENCES:
patent: 4098833 (1978-07-01), Wristers
patent: 4122245 (1978-10-01), Nardi et al.
patent: 4463071 (1984-07-01), Gifford et al.
patent: 4463072 (1984-07-01), Gifford et al.
patent: 5104840 (1992-04-01), Chauvin et al.
patent: 5304522 (1994-04-01), Jalkian et al.
patent: 5731101 (1998-03-01), Sherif et al.
patent: 6096680 (2000-08-01), Park
patent: 6392109 (2002-05-01), O'Rear et al.
patent: 6797853 (2004-09-01), Houzvicka et al.
patent: 2004/0077914 (2004-04-01), Zavilla et al.
patent: 2004/0133056 (2004-07-01), Liu et al.
patent: 2007/0142211 (2007-06-01), Elomari et al.
patent: 2007/0142214 (2007-06-01), Elomari et al.
patent: 2007/0142215 (2007-06-01), Harris et al.
patent: 2007/0142217 (2007-06-01), Elomari et al.
patent: 2007/0142218 (2007-06-01), Harris et al.
patent: 2007/0249486 (2007-10-01), Elomari et al.
Adams et al (Journal: Steroselective hydrogenation reaction in chloroaluminate (III) ionic liquids: a new method for the reduction of aromatic compounds, Chem. Commun., 1999 pp. 1043-1044).
Christopher J. Adams, et al., Stereoslective hydogenation reacations in chloroaluminate (III) ionic liquids: a new method for the reduction of aromatic compounds, Institute of Applied Catalysis, Schoold of Chemistry, 1999, 1043-1044, Received in Cambridge, UK) 15thFeb. 1999, Accepted Apr. 19th1999.
Adams, Christopher J. et al., Friedel-Crafts reactions in room temperature ionic liquids, 1998, 2097-2098, Chem. Commun.
Elomari Saleh
Harris Thomas V.
Abernathy Susan M.
Chevron U.S.A. Inc.
Mayes Melvin C
Patel Smita
Roth Steven H.
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