Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Silicon containing or process of making
Reexamination Certificate
2005-04-12
2005-04-12
Bos, Steven (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Silicon containing or process of making
C502S242000, C502S251000, C502S252000, C502S259000, C502S302000, C502S303000, C502S324000, C502S326000, C502S327000, C502S328000
Reexamination Certificate
active
06878667
ABSTRACT:
A nickel-rhodium alloy based catalyst for catalyzing the production of synthesis gas from a light hydrocarbon and O2by a net catalytic partial oxidation process is disclosed. Preferred nickel-rhodium alloy based catalysts comprise about 1-50 weight percent nickel and about 0.01-10 weight percent rhodium on a porous refractory support structure. In certain embodiments, the catalyst also contains a lanthanide element, zirconium, cobalt, manganese or magnesium.
REFERENCES:
patent: 3334055 (1967-08-01), Dowden et al.
patent: 3953363 (1976-04-01), Yamauchi et al.
patent: 4209424 (1980-06-01), Le Goff et al.
patent: 4325842 (1982-04-01), Slaugh et al.
patent: 4444898 (1984-04-01), Schwartz et al.
patent: 4690777 (1987-09-01), Valenyi et al.
patent: 4877550 (1989-10-01), Goetsch et al.
patent: 5039510 (1991-08-01), Pinto
patent: 5149464 (1992-09-01), Green et al.
patent: 5447705 (1995-09-01), Petit et al.
patent: 5500149 (1996-03-01), Green et al.
patent: 5510056 (1996-04-01), Jacobs et al.
patent: 5648582 (1997-07-01), Schmidt et al.
patent: 5653774 (1997-08-01), Bhattacharyya et al.
patent: 5744419 (1998-04-01), Choudhary et al.
patent: 6060420 (2000-05-01), Munakaa et al.
patent: 6254807 (2001-07-01), Schmidt et al.
patent: 6447745 (2002-09-01), Feeley et al.
patent: 20020002794 (2002-01-01), Figueroa et al.
patent: 20020004450 (2002-01-01), Gaffney et al.
patent: 20020012624 (2002-01-01), Figueroa et al.
patent: 20020035036 (2002-03-01), Figueroa et al.
patent: 20020172642 (2002-11-01), Dindi et al.
patent: 20030045423 (2003-03-01), Dindi et al.
patent: 20030083198 (2003-05-01), Xu et al.
patent: 0333037 (1989-03-01), None
patent: 1040066 (1966-08-01), None
patent: 2008147 (1979-05-01), None
Chemical Abstracts CA 130:5518 Basile et Al Studies in Surface Science and Catalyst 1998, vol. 119 pp. 693-698.*
Catalyst Behaviour of Ni and Rh containing Catalyst in Partial Oxidation of Methane at Short Residence Times. F. Basini et Al CA 130:5518 from Natural Gas Conversion V 1998 PP693-698.*
Xu, Xiaoding, and Jacob A. Moulijn (Chapter 21),Transformation of a Structural Carrier into a Structured Catalyst in Structured Catalysts and Reactors, (Andrzej Cybulski and Jacob A. Moulijn, eds.), Marcel Dekker, Inc. 599-615 (1998).
Claridge, John B., York, Andrew P.E., Brungs, Attila J., Alvarez, Carlos Marquez-, Sloan, Jeremy, Tsang, Shik Chi, and Malcolm Green, L.H.,New Catalysts for the Conversion of Methane to Synthesis Gas: Molybdenum and Tungsten Carbide, Journal of Catalysis 180, 85-100 (1998).
Vernon, Patrick D. F., Green, Malcolm L.H., Cheetham, Anthony K. and Ashcroft, Alexander T.,Partial Oxidation of Methane to Synthesis Gas, Catalysis Letters 6, 181-186, (1990).
Choudhary, V.R., Uphade, B.S., and Mamman A.S.,Oxidative Conversion of Methane to Syngas over Nickel Supported on Commercial Low Surface Area Porous Catalyst Carriers Precoated with Alkaline and Rare Earth Oxides, Journal of Catalysis 172, 281-293 (1997).
Choudhary, V.R., Rajput, A.M., and Mamman, A.S.,NiO-Alkaline Earth Oxide Catalysts for Oxidative Methane-to-Syngas Conversion: Influence of Alkaline Earth Oxide on the Surface Properties and Temperature-Programmed Reduction/Reaction by H2and Methane, Journal of Catalysis 178, 576-585 (1998).
Choudhary, V.R., Uphade, B.S. and Mamman, A.S.,Large enhancement in methane-to-syngas conversion activity of supported Ni catalysts due to precoating of catalyst supports with MgO, CaO or rare-earth oxide, Catalysis Letters 32, 387-390 (1995).
PCT Search Report for PCT/US00/28648.
V.R. Choudhary, S.D. Sansare and A.S. Mamman,Low-temperature selective oxidation of methane to carbon monoxide and hydrogen over cobalt-MgO catalysts, Applied Catalysis A: General, 90 (1992) Li-L5.
V.R. Coudhary, A.S. Mamman, S.D. Sansare,Selective Oxidation of Methane to CO and H2over Ni/MgO at Low Temperatures, COMMUNICATIONS, Angew. Chem. Int. Ed. Engl. (1992) 31, No. 9, 1189-1190.
Y.H. Hu and E. Ruckenstein,Binary MgO-Based Solid Solution Catalysts for Methane Conversion to Syngas, Catalysts Reviews, 44(3) (2002) 423-453.
Corbin David R.
Gaffney Anne M.
Bos Steven
Wright, Sr. William G.
LandOfFree
Nickel-rhodium based catalysts for synthesis gas production does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nickel-rhodium based catalysts for synthesis gas production, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nickel-rhodium based catalysts for synthesis gas production will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3373783