Catalyst for clarifying exhaust gas

Details Catalyst for clarifying exhaust gas Catalyst for clarifying exhaust gas

2007-04-17

2007-04-17

Nguyen, Cam N. (Department: 1754)

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S302000, C502S303000, C502S304000, C502S328000, C502S329000, C502S330000, C502S331000, C502S332000, C502S333000, C502S334000, C502S335000, C502S336000, C502S337000, C502S338000, C502S339000, C502S349000, C502S415000, C502S439000, C502S525000, C502S527120, C502S527130

Reexamination Certificate

active

10520823

ABSTRACT:
To provide an exhaust gas purifying catalyst which can maintain the catalytic activity at a high level over a long time and can achieve satisfactory emission control performance, an exhaust gas purifying catalyst is prepared so as to contain a noble metal, a perovskite-type composite oxide represented by the following general formula (3), and theta-alumina and/or alpha-alumina:in-line-formulae description="In-line Formulae" end="lead"?AB1-mNmO3  (3)in-line-formulae description="In-line Formulae" end="tail"?wherein A represents at least one element selected from rare-earth elements and alkaline earth metals; B represents at least one element selected from Al and transition elements excluding rare-earth elements and noble metals; N represents a noble metal; and m represents an atomic ratio of N satisfying the following relation: 0<m<0.5.

REFERENCES:
patent: 4182694 (1980-01-01), Lauder
patent: 4200554 (1980-04-01), Lauder
patent: 4294726 (1981-10-01), Bozon 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: 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: 0 525 677 (1993-02-01), None
patent: 1 035 074 (2000-09-01), None
patent: 2 665 089 (1992-01-01), None
patent: 2 665089 (1992-01-01), None
patent: S51-91890 (1976-08-01), None
patent: 60-025544 (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: 62-241552 (1987-10-01), None
patent: S62-262745 (1987-11-01), None
patent: 63-302950 (1988-12-01), None
patent: H01-011643 (1989-01-01), None
patent: H01011643 (1989-01-01), None
patent: 02-265648 (1990-10-01), None
patent: H3-068451 (1991-03-01), None
patent: H03-186346 (1991-08-01), None
patent: 05-031367 (1993-02-01), None
patent: 05-076762 (1993-03-01), None
patent: 05-200395 (1993-08-01), None
patent: 05-245372 (1993-09-01), None
patent: 05-253484 (1993-10-01), None
patent: H5-509033 (1993-12-01), None
patent: 06-100319 (1994-04-01), None
patent: 06-210175 (1994-08-01), None
patent: 06-304449 (1994-11-01), None
patent: 07-068175 (1995-03-01), None
patent: 07-080311 (1995-03-01), None
patent: 07-116519 (1995-05-01), None
patent: 07-299360 (1995-11-01), None
patent: H7-308578 (1995-11-01), None
patent: 08-217461 (1996-08-01), None
patent: 08-224446 (1996-09-01), None
patent: H10-277389 (1998-10-01), None
patent: H11-57471 (1999-03-01), None
patent: 11-207183 (1999-08-01), 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: 2001-224963 (2001-08-01), None
patent: WO 2004-004899 (2004-01-01), None
Hirohisa Tanaka et al., An Intelligent Catalyst, Reprint: Advanced Catalytic Converters & Substrates for Gas Emission Syst. (SP-1573), SAE World Congress 2001.
Hirohisa Tanaka et al., Regen. of Palladium Subsequent to Solid Solution & Segregation in a Perovskite Catalyst: An Intelligent Catalyst, vol. 16/17, Nos. 1-4, Sep. 2001.
T. Motohiro et al., Time-resolved time-of-flight mass spectrometry with molecular-pulse-probes for analysis . . . ,(I), Reprint from Applied Science, 121/122 (1997), pp. 319-322.
T. Motohiro et al., Time-resolved time-of-flight mass spectrometry with molecular-pulse-probes for analysis . . . ,(II), Reprint from Applied Science, 121/122 (1997), pp. 323-326.
Nobuhiko Kajita et al., Regeneration of Precious Metals in Various Designed . . . , Reprint: New Emmissions Tech. from SAE 2002 World Congress (SP-1703) Detroit MI Mar. 4-7, 2002.
Nolven Guilhaume and Michael Primet, “Three-Way Catalytic Activity and Oxygen Storage Capacity of Perovskite LaMn0.976Rh0.024O3+δ”, 1997, p. 197-204, vol. 165.
Hirohisa Tanaka et al. “Perovskite Shokubai eno Kikinzou Tanji Koka” Shokubai Totonkai Toronkai A Yokoshu, vol. 88, 2001, p. 112.
Nabuhiko Kajita et al. “Regenaration of Precious Metals in Various Designed . . . ” SAE Technical Paper Series, SAE World Congress, Detroit Michigan, Mar. 4-7, 2002.
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.
Catalysis Society of Japan, Tokyo-to, Japan.

Affiliated with

Also associated with

Rating

Catalyst for clarifying exhaust gas does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalyst for clarifying exhaust gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst for clarifying exhaust gas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3790167