Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Gas or vapor treating
Reexamination Certificate
2006-05-02
2006-05-02
Griffin, Walter D. (Department: 1764)
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Gas or vapor treating
C502S052000, C502S034000
Reexamination Certificate
active
07037871
ABSTRACT:
A process is disclosed for regenerating a hydrocarbon conversion catalyst comprising zeolite L with ozone. The catalyst is contacted with ozone at a temperature of from about 20 to about 250° C. and a concentration of ozone of from about 0.1 to about 5 mol-%. The catalyst may contain coke. The process at least partially restores the activity of the catalyst. The process is particularly useful for reforming and dehydrocyclodimerization catalysts.
REFERENCES:
patent: 2684927 (1954-07-01), Bergstrom
patent: 2868721 (1959-01-01), Bergstrom
patent: 4133743 (1979-01-01), Boret et al.
patent: 4218338 (1980-08-01), Huin et al.
patent: 4507397 (1985-03-01), Buss
patent: 4810683 (1989-03-01), Cohn et al.
patent: 5155075 (1992-10-01), Innes et al.
patent: 5183789 (1993-02-01), Boyle
patent: 5330736 (1994-07-01), Wu et al.
patent: 5365009 (1994-11-01), Uppal et al.
patent: 5756414 (1998-05-01), Huang et al.
patent: 5883031 (1999-03-01), Innes et al.
patent: 6040259 (2000-03-01), Mohr et al.
patent: 4436656 (1996-04-01), None
patent: 03224633 (1991-10-01), None
C. L. Pieck et al., “Influence of O2 and O3 regeneration on the metallic phase of the Pt-Re/Al2O3 catalyst”, Applied Catalysis A: General 165 (1997) 207-218.
Carlos A. Querini, “Isobutane/butane alkylation: regeneration of solid acid catalysts”, Catalysis Today 62 (2000) 135-143.
Copperthwaite, R.G. et al. Regeneration of Pentasil Zeolite Catalysts Using Ozone and OxygenJ. Chem. Soc., Faraday Trans. 1, 1986, 82, pp. 1007-1017.
Pieck, C.L. et al. Regeneration of Coked Pt-Re/Al2O3Catalyst by Burning with Oxygen and OzoneCatalyst Deactivation 1994, Studies in Surface Science and Catalysis, vol. 88 pp. 289-295 1994 Elsevier Science B.V., The Netherlands ISBN-0-444-81682-8.
Querini, C.A. et al Isobutane Alkylation with C4Olefins: Low Temperature Regeneration of Solid Acid Catalysts with OzoneCatalyst Deactivation 1997, Proceedings of the 7thInternational Symposium, Cancun, Mexico, Oct. 5-8, 1997Studies in Surface Science and Catalyst, vol. 111, pp. 407-414 1997 Elsevier Science B.V.
Pieck, C.L. et al. Differential Effect of Coke Burning with Oxygen or Ozone on Pt-Re Interaction on Pt-Re/Al2O3Catalyst Deactivation 1997, Proceedings of the 7thInternational Symposium, Cancun, Mexico, Oct. 5-8, 1997Studies in Surface Science and Catalysis, vol. 111 pp. 433-438 1997 Elsevier Science B.V.
Galperin Leonid B.
Stine Laurence O.
Stine Margaret A.
Voskoboinikov Timur V.
Griffin Walter D.
Moore Michael A.
Tolomei John G.
UOP LLC
LandOfFree
Low-temperature regeneration of zeolite L using ozone does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low-temperature regeneration of zeolite L using ozone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-temperature regeneration of zeolite L using ozone will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3525625