Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Preparing inorganic compound
Reexamination Certificate
2007-02-10
2010-10-12
Langel, Wayne (Department: 1793)
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Preparing inorganic compound
C423S359000
Reexamination Certificate
active
07811442
ABSTRACT:
A method and apparatus for synthesizing anhydrous ammonia utilizing proton conducting electrolyte having a water vapor dissociating electrocatalyst on one side and a nitrogen dissociating electrocatalyst on the other side. A voltage is provided across the proton conducting electrolyte, protons are separated from the water vapor and transferred through the middle of the proton conducting electrolyte to the second side of the proton conducting electrolyte. Nitride ions are formed from nitrogen and the electrons provided by the voltage on the second side of the proton conducting electrolyte. The protons are then reacted with the nitride ions on the second side of the proton conducting electrolyte to produce anhydrous ammonia. A preferred proton conducting electrolyte is barium cerium oxide doped with about 10% ytterbium with a water vapor dissociating electrocatalyst of Ni and Pd, and a nitrogen dissociating electrocatalyst of Co and Ru.
REFERENCES:
patent: 6712950 (2004-03-01), Denvir et al.
patent: 6881308 (2005-04-01), Denvir et al.
patent: 6899744 (2005-05-01), Iwahara et al.
patent: 7157166 (2007-01-01), Vajo
patent: 7314544 (2008-01-01), Murphy et al.
patent: 2003/0164305 (2003-09-01), Denvir et al.
patent: 2005/0087449 (2005-04-01), Denvir et al.
patent: 2006/0049063 (2006-03-01), Murphy et al.
patent: 0972855 (2000-01-01), None
patent: 08-066621 (1996-03-01), None
patent: 8-246177 (1996-09-01), None
Li et al., “Preparation of double-doped BaCeO3 and its application in the synthesis of ammonia at atmospheric pressure,” 2007, Science and Technology of Advanced Materials, 8, pp. 566-570.
Li et al., “A novel method for preparation of doped Ba3(Ca1.18Nb1.82)O9—d: Application to ammonia synthesis at atmospheric pressure,” 2005, Solid State Ionics, 176, pp. 1063-1066.
Liu et al., “Synthesis of ammonia at atmospheric pressure with Ce0.8M0.2O2—d (M= La, Y, Gd, Sm) and their proton conduction at intermediate temperature,” 2006, Solid State Ionics, 177, pp. 73-76.
Xie et al., “Preparation of La1.9Ca0.1Zr2O6.95 with pyrochlore structure and its application in synthesis of ammonia at atmospheric pressure,” 2004, Solid State Ionics, 168, pp. 117-121.
E. Andrew Payzant, Scott A. Speakman, and Timothy R. Armstrong, “Novel High-Temperature Ion Transport Membrane Development,” DOE Hydrogen Program FY 2005 Progress Report.
Jerry Y.S. Lin, “Proton-Conducting Dense Ceramic Membranes for Hydrogen Separations,” Annual Report, Nov. 2001.
G. Marnellos, S. Zisekas, M. Stoukides, “Synthesis of Ammonia at Atmospheric Pressure with the Use of Solid State Proton Conductors,” Journal of Catalysis, 193, p. 80 (2000).
Xiwang Qi and Y.S. Lin, “Electrical Conducting Properties of Proton-Conducting Terbium-Doped Strontium Cerate Membranes,” Solid State Ionics, 120, p. 85, 1999.
A. Nowick, A. Vaysleyb, “Isotope effect and proton hopping in high-temperature protonic conductors”, Solid State Ionics, 97, p. 17, 1997.
H. Iwahara, Y. Asakura, K. Katahira, M. Tanaka, “Prospect of hydrogen technology using proton-conducting ceramics,” Solid State Ionics, 168, p. 299, 2004.
Y. Arachi, H. Sakai, O. Yamamoto, Y. Takeda, N. Imanishi, “Electrical conductivity of the ZrO2-Ln2O3 (Ln=lanthanides) system,” Solid State Ionics, 121, p. 133, 1999.
V. Kordali, et al, “Electrochem. Syn. of Amm. at Atmospheric Pres. & Low Temp . . . ,” J. Royal Soc. Chem., Chem Com., p. 1673, 2000.
J.C. Ganley, et al, “Porous Anodic Alumina Optimized as a Catalyst Support for Microreactors”, Journal of Catalysis, 227, p. 26, 2004.
T. Murakami, et al, “Electrolytic Ammonia Synthesis from Water and Nitrogen Gas in Molten Salt under Atmospheric Pressure,” Electrochimica Acta, 50, p. 5423, 2005.
S. Doong, et al, “Direct Hydrogen Production from Coal Using Novel Membrane Gasifier,” Final Technical Report, Gas Tech. Inst. Sep. 2003 to Nov. 2004.
J. Wainright, J. Wang, D. Weng, R. Savinell, M. Litt, “Acid-doped polybenzimidazoles: a new polymer electrolyte,” Journal of the Electrochemical Society, 142 , L121, 1995.
Y. Jiang, A. Virkar, “A high performance, anode-supported solid oxide fuel cell operating on direct alcohol,” Journal of the Electrochemical Society, 148, A706, 2001.
H. Iwahara, et al, “Proton cond. in sintered oxides & its application to steam elect. for hydrogen prod.,” Solid State Ionics, ¾, p. 359, 1981.
H. Iwahara, H. Uchida, K. Ono, K. Ogaki, “Proton conduction in sintered oxides based on barium cerate (BaCeO3),” Journal of the Electrochemical Society, 135, p. 529, 1988.
T. Yajima, H. Kazeoka, T. Yogo, H. Iwahara, “Proton conduction in sintered oxides based on calcium zirconate (CaZrO3),” Solid State Ionics, 47, p. 271, 1991.
J. Ganley, et al, “A Priori Catalytic Activity Correlations: The Difficult Case of Hydrogen Production from Ammonia,” Catalysis Letters, 96 (3), p. 117, 2004.
S. Zisekas, G. Karagiannakis, G. Marnellos, and M. Stoudikes, “Study of Ammonia Decomposition in a Proton Conductiong Solid Electrolyte Cell,” Ionics, 8, p. 118, 2002.
T. Murakami, et al, “Electrolytic Amm. Syn. Directly from Various Hydrogen Sources under Atmospheric Pressure,” Electrochemical & Solid State Letters, 8, D12, 2005.
B.H. Wang, et al, “Syn. of amm. from nat. gas at atm. Pressure . . . ,” J. Solid State Electrochem., 11, p. 27, 2006.
H. Matsumoto, et al, “Electrochemical Hydrogen Pump Using a High-Temperature-Type Proton Conductor: Improvement of Pumping Capacity,” Solid State Ionics, 145, p. 25, 2001.
I.I. Balachov, et al, “Modular System for Hydrogen Generation & Oxygen Recovery,” DOE Hydrogen Program FY 2005 Progress Report, p. 363.
J.S. Herring, et al, “Laboratory-Scale High Temperature Electrolysis System,” DOE Hydrogen Program FY 2006 Progress Report, p. 173.
Ganley Jason C.
Holbrook John H.
Langel Wayne
Martinez Brittany M
McKinley Jr. Douglas E
N H Three LLC
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