Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2003-07-03
2009-11-24
Ward, Jessica L (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S525000
Reexamination Certificate
active
07622418
ABSTRACT:
To provide a method for industrially efficiently producing an exhaust gas purifying catalyst containing a perovskite-type composite oxide which is stable and has a less reduced specific surface area and is also effectively prevented from decreasing in its catalytic performance even in endurance in high temperature oxidative reducing atmospheres, a pre-crystallization composition containing elementary components constituting a perovskite-type composite oxide containing a noble metal is prepared, is mixed with a powder of theta-alumina and/or alpha-alumina to prepare a mixture, and the mixture is heat treated. Thus, the resulting perovskite-type composite oxide supported by the powder of theta-alumina and/or alpha-alumina can keep its thermostability at a sufficient level thereby to effectively prevent the catalytic performance from decreasing. This method can industrially efficiently produce the exhaust gas purifying catalyst.
REFERENCES:
patent: 3905918 (1975-09-01), Mai et al.
patent: 4126580 (1978-11-01), Lauder
patent: 4182694 (1980-01-01), Lauder
patent: 4200554 (1980-04-01), Lauder
patent: 4237030 (1980-12-01), Noguchi et al.
patent: 4294726 (1981-10-01), Bozon et al.
patent: 4303552 (1981-12-01), Ernest et al.
patent: 4921829 (1990-05-01), Ozawa et al.
patent: 5139992 (1992-08-01), Tauster et al.
patent: 5212142 (1993-05-01), Dettling
patent: 5254519 (1993-10-01), Wan et al.
patent: 5380692 (1995-01-01), Nakatsuji
patent: 5439865 (1995-08-01), Abe et al.
patent: 5447705 (1995-09-01), Petit et al.
patent: 5462907 (1995-10-01), Farrauto et al.
patent: 5491120 (1996-02-01), Voss et al.
patent: 5622680 (1997-04-01), Monceaux et al.
patent: 5691263 (1997-11-01), Park et al.
patent: 5814576 (1998-09-01), Yamamoto
patent: 5837642 (1998-11-01), Tanaka et al.
patent: 5849659 (1998-12-01), Tanaka et al.
patent: 5990038 (1999-11-01), Suga et al.
patent: 6033632 (2000-03-01), Schwartz et al.
patent: 6261989 (2001-07-01), Tanaka et al.
patent: 6352955 (2002-03-01), Golden
patent: 6464946 (2002-10-01), Yamada et al.
patent: 6531425 (2003-03-01), Golden
patent: 6534031 (2003-03-01), Bedard
patent: 6569803 (2003-05-01), Takeuchi
patent: 6576200 (2003-06-01), Yamamoto et al.
patent: 6602479 (2003-08-01), Taniguchi et al.
patent: 6620762 (2003-09-01), Tan et al.
patent: 6682706 (2004-01-01), Yamamoto et al.
patent: 6800388 (2004-10-01), Kaneko et al.
patent: 6808687 (2004-10-01), Uenishi et al.
patent: 6864214 (2005-03-01), Uenishi et al.
patent: 6881384 (2005-04-01), Uenishi et al.
patent: 2001/0053467 (2001-12-01), Kaneko et al.
patent: 0 130 835 (1985-01-01), None
patent: 0525677 (1992-07-01), None
patent: 1 035 074 (2000-09-01), None
patent: 2 665 089 (1992-01-01), None
patent: S51-91890 (1976-08-01), None
patent: 51-104488 (1976-09-01), None
patent: 51-123792 (1976-10-01), None
patent: S60-025544 (1985-02-01), None
patent: 61-191518 (1986-08-01), None
patent: 61-232217 (1986-10-01), None
patent: S62-106845 (1987-05-01), None
patent: S632-241552 (1987-10-01), None
patent: 62-254845 (1987-11-01), None
patent: S62-262745 (1987-11-01), None
patent: 63-54940 (1988-03-01), None
patent: S63-302950 (1988-12-01), None
patent: H01-011643 (1989-01-01), None
patent: 1-168343 (1989-07-01), None
patent: H 2-265648 (1990-10-01), None
patent: H3-068451 (1991-03-01), None
patent: H3-186346 (1991-08-01), None
patent: H5-31367 (1993-02-01), None
patent: H5-76762 (1993-03-01), None
patent: H5-220395 (1993-08-01), None
patent: H5-245372 (1993-09-01), None
patent: H5-253484 (1993-10-01), None
patent: H5-509033 (1993-12-01), None
patent: H6-100319 (1994-04-01), None
patent: H6-210175 (1994-08-01), None
patent: H6-304449 (1994-11-01), None
patent: 07-080310 (1995-03-01), None
patent: 7-80310 (1995-03-01), None
patent: H7-68175 (1995-03-01), None
patent: H7-80311 (1995-03-01), None
patent: H7-116519 (1995-05-01), None
patent: H7-299360 (1995-11-01), None
patent: H7-308578 (1995-11-01), None
patent: H8-217461 (1996-08-01), None
patent: H8-224446 (1996-09-01), None
patent: 9-59022 (1997-03-01), None
patent: 09-059022 (1997-03-01), None
patent: 9-164332 (1997-06-01), None
patent: 10-101489 (1998-04-01), None
patent: H10-277389 (1998-10-01), None
patent: 11-019521 (1999-01-01), None
patent: H11-057471 (1999-03-01), None
patent: H11-57471 (1999-03-01), None
patent: H11-207183 (1999-08-01), None
patent: 11-262663 (1999-09-01), None
patent: H11-262663 (1999-09-01), None
patent: 2000-015097 (2000-01-01), None
patent: 2000-042368 (2000-02-01), None
patent: 2000-143251 (2000-05-01), None
patent: 2000-256017 (2000-09-01), None
patent: 2000-279814 (2000-10-01), None
patent: 2001-224963 (2001-08-01), None
patent: WO 2004/004899 (2004-01-01), None
Tanaka et al., “An Intelligent Catalyst” SAE Technical Paper Series, SAE 2001 World Congress, Detroit Michigan, Mar. 5-8, 2001.
Tanaka et al., “Regeneration of palladium subsequent to solid solution and segregation in a perovskite . . . ” Klower Academic/Plenum Publishers, vol. 16/17 Nos. 1-4 Sep. 2001.
Motohiro et al. “Time-resolved time-of-flight mass spectrometry with molecular-pulse-probes for analysis of dynamic (I) . . . ” Applied Surface Science 121/122 (1997) 319-322.
Motohiro et al. “Time-resolved time-of-flight mass spectrometry with molecular-pulse-probes for analysis of dynamic (II) . . . ” Applied Surface Science 121/122 (1997) 323-326.
Kajita et al. “Regeneratoin of precious metals in various designed intelligent perovskite . . . ” SAE Technical Paper Series, SAE World Congres, Detroit Michigan Mar. 4-7, 2002.
Nolven Guilhaume and Michael Primet, Three-Way Catalytic Activity and Oxygen Storage Capacity of Perovskite LaMn0.976Rh0.024O3+σ, 1997, p. 197-204, vol. 165.
Hirohisa Tanaka et al. “Perovskite Shokubai eno Kikinzou Tanji Koka” Shokubai Toronkai Toronkai A Yokoshu, vol. 88, 2001, p. 112.
Iseki Yoshikazu et al., “Analysis of Solid Solution Formation and Precipitation Phenomena of Pd in Pd Perovskite Catalyst”, Catalysts & Catalysts, 2002, vol. 44, No. 2 2002.
Kajita Nobuhiko
Narita Keiichi
Sato Noboru
Sato Yasunori
Tan Isao
Akerman & Senterfitt
D'Aniello Nicholas P
Daihatsu Motor Company, Ltd.
Edwards, Esq. Jean C.
Hokko Chemical Industry Co. Ltd.
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