Catalyst for producing methacrylic acid and preparation...

Details Catalyst for producing methacrylic acid and preparation... Catalyst for producing methacrylic acid and preparation...

2004-02-20

2010-11-02

Hailey, Patricia L (Department: 1793)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Phosphorus or compound containing same

C502S209000, C502S210000, C502S211000, C502S212000, C502S213000

Reexamination Certificate

active

07825061

ABSTRACT:
The object of the present invention is to provide a catalyst for producing methacrylic acid in high yield and highly selectively by subjecting methacrolein, isobutylaldehyde or isobutyric acid to gas phase catalytic oxidation, and the preparation method thereof. The catalyst contains Mo, V, P, Cu, Cs and NH4as the essential, active components, and the feature is to use for preparing the catalyst a cesium weak acid salt or cesium hydroxide as the Cs raw material and ammonium acetate as the NH4raw material. A coated catalyst of the present invention is obtainable by supporting the active component on an inert carrier of alumina or the like.

REFERENCES:
patent: 4180678 (1979-12-01), Wada et al.
patent: 4558028 (1985-12-01), Tsuneki et al.
patent: 4652673 (1987-03-01), Matsumoto et al.
patent: 4925980 (1990-05-01), Matsumoto et al.
patent: 5104844 (1992-04-01), Yamamoto et al.
patent: 6043184 (2000-03-01), Karmakar et al.
patent: 6458740 (2002-10-01), Kasuga et al.
patent: 6812188 (2004-11-01), Seo et al.
patent: 2001/0029233 (2001-10-01), Kasuga et al.
patent: 2007/0010394 (2007-01-01), Atsushi et al.
patent: 0 006 248 (1980-01-01), None
patent: 0 442 517 (1991-08-01), None
patent: 0 454 376 (1991-10-01), None
patent: 0454376 (1991-10-01), None
patent: 1 132 131 (2001-09-01), None
patent: 1 325 780 (2003-07-01), None
patent: 3-238052 (1991-10-01), None
patent: 11-226411 (1999-08-01), None
patent: 11-226412 (1999-08-01), None
patent: 11226412 (1999-08-01), None
patent: 2000-296336 (2000-10-01), None
patent: 2001-246260 (2001-09-01), None
patent: 2002-233760 (2002-08-01), None
patent: 1993-5306 (1993-06-01), None
patent: 10-2005-0098919 (2005-10-01), None
patent: 02/24328 (2002-03-01), None
patent: 0224328 (2002-03-01), None
Supplemental European Search Report dated Jan. 31, 2007.
International Search Report Jun. 1, 2004.
Chinese communication dated Jun. 8, 2007.
European communication dated Jul. 2, 2009.
Korean communication dated Feb. 27, 2010, with English translation in co-pending application (10-2005-7014828).
Taiwanese communication dated Jun. 14, 2010 in co-pending foreign application (TW093104115).

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