Fine particle of perovskite oxide, particle having deposited...

Details Fine particle of perovskite oxide, particle having deposited... Fine particle of perovskite oxide, particle having deposited...

2011-08-30

2011-08-30

Kopec, Mark (Department: 1761)

Compositions

Electrically conductive or emissive compositions

Free metal containing

C252S520100, C252S520300

Reexamination Certificate

active

08007691

ABSTRACT:
A catalyst for electrodes in solid-polymer fuel cells which comprises metal oxide particles themselves. The catalyst contains fine transition-metal oxide particles having, in the main phase, a perovskite structure represented by the general formula ABO3(wherein A represents one or more elements selected among lanthanum, strontium, cerium, calcium, yttrium, erbium, praseodymium, neodymium, samarium, europium, silicon, magnesium, barium, niobium, lead, bismuth, and antimony; and B represents one or more elements selected among iron, cobalt, manganese, copper, titanium, chromium, nickel, and molybdenum), the fine oxide particles having lattice constants satisfying the following relationship (1):in-line-formulae description="In-line Formulae" end="lead"?1.402<2b/(a+c)<1.422  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein a and c represent the minor-axis lengths of the perovskite type crystal lattice and b represents the major-axis length thereof.

REFERENCES:
patent: 5380692 (1995-01-01), Nakatsuji et al.
patent: 6372686 (2002-04-01), Golden
patent: 6569803 (2003-05-01), Takeuchi
patent: 6631057 (2003-10-01), Allenspach et al.
patent: 6689505 (2004-02-01), Albers et al.
patent: 7205257 (2007-04-01), Tanaka et al.
patent: 7244688 (2007-07-01), Reetz et al.
patent: 2001/0016554 (2001-08-01), Takeuchi
patent: 2004/0072061 (2004-04-01), Nakano et al.
patent: 2004/0137310 (2004-07-01), Kiros
patent: 2005/0148464 (2005-07-01), Reetz et al.
patent: 2005/0255993 (2005-11-01), Tanaka et al.
patent: 2006/0134506 (2006-06-01), Kim et al.
patent: 2006/0260955 (2006-11-01), Sasaki et al.
patent: 2008/0044692 (2008-02-01), Reetz et al.
patent: 62-254361 (1987-11-01), None
patent: 5-217586 (1993-08-01), None
patent: 5-261289 (1993-10-01), None
patent: 8-117598 (1996-05-01), None
patent: 11-28357 (1999-02-01), None
patent: 2000-36303 (2000-02-01), None
patent: 2000-307171 (2000-11-01), None
patent: 2001-269578 (2001-10-01), None
patent: 2002-352806 (2002-12-01), None
patent: 2002346387 (2002-12-01), None
patent: 2003-288905 (2003-10-01), None
patent: 2004-41866 (2004-02-01), None
patent: 2004-197130 (2004-07-01), None
patent: 2004-209468 (2004-07-01), None
patent: 2004-321986 (2004-11-01), None
patent: 2004-363056 (2004-12-01), None
patent: 2005-50759 (2005-02-01), None
patent: 2005-50760 (2005-02-01), None
patent: 2005-526596 (2005-09-01), None
patent: 2005-270873 (2005-10-01), None
patent: 2006-62953 (2006-03-01), None
patent: WO 02/075827 (2002-09-01), None
Kong et al “Gas-sensing property and mechanism of CaxLa1-xFeO3 ceramics”, Sensors and Actuators B 30 (1996) 217-221.
Zhang et al “Cu- and Pd- substituted nanoscale Fe-based perovskites . . . ”, Journal of Catalysis 237 (2006) 368-380.
JP 2000-307171 English translation.
Paranjape et al “Electronic transport in nanostructured thin films of perovskite manganite La0.67Ca0.33MnO3 . . . ”, J. Phys. D.: Appl. Phys. 38 (2005) 3674-3681.
Bera et al., “Ionic dispersion of Pt and Pd on Ce02 by combustion method: effect of metal-ceria interaction on catalytic activities for NO reduction and CO and hydrocarbon oxidation,” Journal of Catalysts, vol. 196, 2000, pp. 293-301.
Office Action in U.S. Appl. No. 11/992,545 mailed Jun. 23, 2010.
Roy et al., “High rates of NO and N20 reduction by CO, CO and hydrocarbon oxidation by 02 over nano crystalline Ce0.98Pd0.020w-8: catalytic and kinetic studies,” Applied Catalysis B: Environmental, vol. 71, 2007, pp. 23-31.
Xu et al., “Electrochemical oxidation of ethanol on Pt-Ce02/C catalysts,” Journal of Power Sources, vol. 142, 2005, pp. 27-29.

Affiliated with

Also associated with

Rating

Fine particle of perovskite oxide, particle having deposited... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fine particle of perovskite oxide, particle having deposited..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fine particle of perovskite oxide, particle having deposited... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2748234