Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2006-07-14
2010-11-16
Nguyen, Cam N (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S104000, C502S109000, C502S308000, C502S314000, C502S332000, C502S333000, C502S334000, C502S339000, C502S349000, C502S355000, C502S415000, C502S439000
Reexamination Certificate
active
07833933
ABSTRACT:
A process for preparation of a paraffin isomerization catalyst comprising a mixture of a Group IVB metal oxide, a Group VIB metal oxide, a Group IIIA metal oxide and a Group VIII metal. The process includes the steps of: a) contacting a hydroxide of the Group IVB metal with an aqueous solution of an oxyanion of the Group VIB metal to provide a mixture, (b) drying the mixture to provide a dry powder, (c) kneading the powder with a Group IIIA hydroxide gel and a polymeric cellulose ether compound to form a paste, (d) shaping the paste to form a shaped material, (e) calcining the shaped material to form a calcined material, (f) impregnating the calcined material with an aqueous solution of a Group VIII metal salt to provide the catalyst, and (g) calcining the catalyst.
REFERENCES:
patent: 4891348 (1990-01-01), Imanari et al.
patent: 5422327 (1995-06-01), Soled et al.
patent: 5453556 (1995-09-01), Chang et al.
patent: 5510309 (1996-04-01), Chang et al.
patent: 5608133 (1997-03-01), Chang et al.
patent: 5648589 (1997-07-01), Soled et al.
patent: 5710089 (1998-01-01), Khare
patent: 5780382 (1998-07-01), Chang et al.
patent: 5837641 (1998-11-01), Gosling et al.
patent: 5854170 (1998-12-01), Chang et al.
patent: 6080904 (2000-06-01), Chang et al.
patent: 6326328 (2001-12-01), Matsuzawa
patent: 6767859 (2004-07-01), Ying et al.
patent: 6818589 (2004-11-01), Gillespie
patent: 6977322 (2005-12-01), Gillespie
patent: 7414007 (2008-08-01), Gillespie et al.
patent: 2004/0059174 (2004-03-01), Houzvicka et al.
patent: 2004/0256289 (2004-12-01), Gillespie et al.
patent: 2005/0177009 (2005-08-01), Levin et al.
patent: 2005/0255994 (2005-11-01), Houzvicka et al.
E. Inglesia, et al., “Selective Isomerization of Alkanes on Supported Tungsten Oxide Acids,” 11th National Congress on Catalysis, Studies in Surface Science and Catalysis, vol. 101, 1996, pp. 533-542.
G. Larsen et al., “A Study of Platinum Supported on Tungstated Zirconia Catalysts,” Applied Catalysis A: General 139, 1996, pp. 201-211.
K. Arata et al., “Synthesis of Solid Superacid of Tungsten Oxide Supported on Zirconia and Its Catalytic Action,” Proceedings 9th International Congress on Catalysis, vol. 4, 1988, pp. 1727-1735.
Blom Niels Jørgen
Herbst Konrad
Knudsen Kim Grøn
Starch-Hytoft Glen
Stern Peter
Dickstein & Shapiro LLP
Haldor Topse A/S
Nguyen Cam N
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