EP1663512-A2  See also references of WO 2005026043A2;  See references of WO 2005026043A2US8075958-B2  International Search Report for PCT Application No. PCT/US04/24683.WO2005026043-A3  See also references of EP 1663512A2;  See also references of EP 1663512A4EP2527046-A1  T. L. WARD; T. DAO: 'Model of hydrogen permeation behavior in palladium membranes' J. MEM. SCI. vol. 153, 1999, pages 211 - 231;  G.J. GRASHOFF; C.E. PILKINGTON; C.W. CORTI: 'The purification of hydrogen' PLAT. MET. REV. vol. 27, no. 4, 1983, pages 157 - 169;  A.G. KNAPTON: 'Palladium alloys for hydrogen diffusion membranes' PLAT. MET. REV. vol. 21, 1977, pages 44 - 50;  G. HOLLECK: 'Diffusion and solubility of hydrogen in palladium and palladium-silver alloys' J. PHYS. CHEM. vol. 74, no. 5, 1970, pages 503 - 511;  T.C. PLUYM; S.W. LYONS; Q.H. POWELL; A.S. GURAV; T.T. KODAS; L.M. WANG; H.D. GLICKSMAN: 'Palladium metal and palladium oxide particle production by spray pyrolysis' MAT. RES. BULL. vol. 28, 1993, pages 369 - 376;  K. NAGASHIMA; T. HIMEDA; A. KATO: 'Properties of conductive films made from fine spherical silver-palladium alloy particles' J. MATER. SCI. vol. 26, 1991, pages 2477 - 2482;  K. NAGASHIMA; M. WADA; A. KATO: 'Preparation of fine Ni particles by the spray pyrolysis technique and their film forming properties in the thick film method' J. MATER. RES. vol. 5, no. 12, 1990, pages 2828 - 2834;  J. SHU; B.P.A. GRANDJEAN; A. VAN NESTE; S. KALIAGUINE: 'Catalytic palladium-based membrane reactors: a review' CAN. J. CHEM. ENG. vol. 69, 1991, pages 1036 - 1060;  S.S. COLE, JR.: 'Oxidation and reduction of palladium in the presence of silver' J. AM. CEIRAM. SOC. vol. 68, no. 4, 1985, pages C106 - C107;  S:S. COLE, JR.: 'Oxidation and reduction of palladium in the presence of silver' J. AM. CERAM. SOC. vol. 68, no. 4, 1985, pages C106 - C107;  S. F. WANG; W. HUEBNER: 'Thermodynamic modeling of equilibrium subsolidus phase relation in the Ag-Pd-02 system' J. AMER. CERAM. SOC. vol. 74, no. 6, 1991, pages 1349 - 1353;  J. SHU; A. ADNOT; B.P.A. GRANDJEAN; S. KALIAGUINE: 'Structurally stable composite Pd-Ag alloy membranes: Introduction of a diffusion barrier' THIN SOLID FILMS vol. 286, 1996, pages 72 - 79;  V.M. GRYAZNOV; O.S. SEREBRYANNIKOVA; YU.M. SEROV: 'Prepartion and catalysis over Pd composite membranes' APPL. CATAL. A: GENERAL vol. 96, 1993, pages 15 - 23;  T.C. PLUYM; SW. LYONS; Q.H. POWELL; A.S. GURAV; T.T. KODAS; L.M. WANG; H.D. GLICKSMAN: 'Palladium metal and palladium oxide particle production by spray pyrolysis' MAT. RES. BULL. vol. 28, 1993, pages 369 - 376;  SHU, B.P.A. GRANDJEAN; A. VAN NESTE; S. KALIAGUINE: 'Catalytic palladium-based membrane reactors: a review' CAN. J. CHEM. ENG. vol. 69, 1991, pages 1036 - 1060;  S.S. COLE, JR.: 'Oxidation and reduction of palladium in the presence of silver' J. AM. CERAM. SOC. vol. 68, no. 4, 1985, pages C106 - C107;  S F. WANG; W. HUEBNER: 'Thermodynamic modeling of equilibrium subsolidus phase relation in the Ag-Pd-02 system' J. AMER. CERAM. SOC. vol. 74, no. 6, 1991, pages 1349 - 1353