Chemistry of inorganic compounds – Hydrogen or compound thereof – Elemental hydrogen
Reexamination Certificate
2007-01-09
2007-01-09
Silverman, Stanley S. (Department: 1754)
Chemistry of inorganic compounds
Hydrogen or compound thereof
Elemental hydrogen
C423S656000, C423S437200
Reexamination Certificate
active
10739429
ABSTRACT:
A method and catalysts for producing a hydrogen-rich syngas are disclosed. According to the method a CO-containing gas contacts a water gas shift (WGS) catalyst, optionally in the presence of water, preferably at a temperature of less than about 450° C. to produce a hydrogen-rich gas, such as a hydrogen-rich syngas. Also disclosed is a water gas shift catalyst formulated from:a) Pt, its oxides or mixtures thereof;b) Ru, its oxides or mixtures thereof; andc) at least one of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, V, Mo, Mn, Fe, Co, Rh, Ir, Ge, Sn, Sb, La, Ce, Pr, Sm, and Eu. Another disclosed catalyst formulation comprises Pt, its oxides or mixtures thereof; Ru, its oxides or mixtures thereof; Co, its oxides or mixtures thereof; and at least one of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, V, Mo, Mn, Fe, Rh, Ir, Ge, Sn, Sb, La, Ce, Pr, Sm, and Eu, their oxides and mixtures thereof. The WGS catalyst may be supported on a carrier, such as any one member or a combination of alumina, zirconia, titania, ceria, magnesia, lanthania, niobia, zeolite, perovskite, silica clay, yttria and iron oxide. Fuel processors containing such water gas shift catalysts are also disclosed.
REFERENCES:
patent: 3305402 (1967-02-01), Jones et al.
patent: 3666412 (1972-05-01), Sowards
patent: 4191733 (1980-03-01), Swift et al.
patent: 4367166 (1983-01-01), Fujitani et al.
patent: 4693882 (1987-09-01), Setzer et al.
patent: 4810485 (1989-03-01), Marianowski et al.
patent: 5030440 (1991-07-01), Lywood et al.
patent: 5134109 (1992-07-01), Uchiyama et al.
patent: 5152975 (1992-10-01), Fong et al.
patent: 5368835 (1994-11-01), Choudhary et al.
patent: 5478370 (1995-12-01), Spangler
patent: 5498404 (1996-03-01), Hansen et al.
patent: 5500198 (1996-03-01), Liu et al.
patent: 5599517 (1997-02-01), Ul-Haque et al.
patent: 5830425 (1998-11-01), Schneider et al.
patent: 5843195 (1998-12-01), Aoyama
patent: 5877377 (1999-03-01), Golunski et al.
patent: 5997835 (1999-12-01), Hyldtoft et al.
patent: 6083425 (2000-07-01), Clawson et al.
patent: 6123913 (2000-09-01), Clawson et al.
patent: 6190430 (2001-02-01), Fukuoka et al.
patent: 6221117 (2001-04-01), Edlund et al.
patent: 6238816 (2001-05-01), Cable et al.
patent: 6254807 (2001-07-01), Schmidt et al.
patent: 6293979 (2001-09-01), Choudhary et al.
patent: 6299995 (2001-10-01), Abdo et al.
patent: 6303098 (2001-10-01), Kramarz et al.
patent: 6312660 (2001-11-01), Yagi et al.
patent: 6340437 (2002-01-01), Yagi et al.
patent: 6346555 (2002-02-01), Luo et al.
patent: 6409939 (2002-06-01), Abdo et al.
patent: 6524550 (2003-02-01), Chintawar et al.
patent: 6555088 (2003-04-01), Baumann et al.
patent: 6562315 (2003-05-01), Korotkikh et al.
patent: 6652830 (2003-11-01), Wang et al.
patent: 6692545 (2004-02-01), Gittleman et al.
patent: 6723298 (2004-04-01), Baumann et al.
patent: 6784135 (2004-08-01), Scholten et al.
patent: 2001/0005559 (2001-06-01), Takemura et al.
patent: 2001/0009653 (2001-07-01), Clawson et al.
patent: 2001/0055560 (2001-12-01), Schiodt et al.
patent: 2002/0009408 (2002-01-01), Weiland et al.
patent: 2002/0061277 (2002-05-01), Ruettinger et al.
patent: 2002/0141938 (2002-10-01), Ruettinger et al.
patent: 2002/0192136 (2002-12-01), Baumann et al.
patent: 2003/0026747 (2003-02-01), Zhu et al.
patent: 2004/0063577 (2004-04-01), Wieland et al.
patent: 0 764 466 (1997-03-01), None
patent: 1 046 612 (2000-10-01), None
patent: 1 149 799 (2001-10-01), None
patent: 1 161 991 (2001-12-01), None
patent: 1458382 (1966-11-01), None
Basinska, A., Kepinski, L., Domka, F.; The effect of support on WGSR activity of ruthenium catalysts; Applied Catalysis A: General; 1999; vol. 183; pp. 143-153; Elsevier Science B.V., The Netherlands.
Xue, E., O'Keeffe, M., Ross, J.R.H.; Water-gas shift conversion using a feed with a low steam to carbon monoxide ratio and containing sulphur; Catalysis Today, 1996, vol. 30, pp. 107-118; Elsevier Science B.V., The Netherlands.
Bunluesin, T, Gorte, R.J., Graham, G.W.; Studies of the water-gas-shift reaction on ceria-supported Pt, Pd, and Rh; implications for oxygen-storage properties; Applied Catalysis B: Environmental, 1998, vol. 15, pp. 107-114; Elsevier Science B.V., The Netherlands.
Hilaire, S., Wang, X., Luo, T., Gorte, R.J., Wagner, J.; A comparative study of water-gas-shift reaction over ceria-supported metallic catalysts; Applied Catalysis A: General, 2001, vol. 25, pp. 271-278; Elsevier Science B.V., The Netherlands.
Rase, H.F., editor; Chapter 19—Synthesis Gas and Its Products: Handbook of Commercial Catalysts-Heterogeneous Catalysts, 2000, pp. 403-426;CRC Press, Boca Raton, Florida, US.
Kalakkad, D.S., Datye, A.K., Robota, H.J.; Pt-CeO2 Contact and Its Effect on CO Hydrogenation Selectivity; Journal of Catalysis; 1994, vol. 148, pp. 729-736, Academic Press, Inc.
Mendelovici, L., Steinberg, M.; Methanation and Water-Gas Shift Reactions over Pt/Ce02; Journal of Catalysis, 1985, vol. 96, pp. 285-287; Academic Press, Inc.
NexTech Materials; Print-out of website “http://www.nextechmaterials.com/products.htm”; Mar. 2001; 3 pages.
Swartz, S.L., Holt, C.T., Dawson, W.J.; Nanoscale Water-Gas-Shift Catalysts; Undated; 4 pages.
Database WPI, Section Ch, Week 200175, AN 2001-650833, Abstract of JP 2001224965A issued Aug. 21, 2001, Derwent Publications, London, GB.
Database WPI, Section Ch, Week 199730, AN 1997-327585, Abstract of JP 09 131531 A issued May 20, 1997, Derwent Publications, London, GB.
Brooks Christopher James
Carhart Raymond E.
Grasselli Robert K.
Hagemeyer Alfred
Phillips Cory Bernard
Duell Mark E.
Fitch Even Tabin & Flannery
Honda Giken Kogyo Kabushiki Kaisha
Krasnow Ronald A.
Silverman Stanley S.
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