FR2757499-A1  KERKER: "Herstellung von Reduktionsgas oder Synthesegas mit Lichtbogenplasmaverfahren" ELECTROW[RME INTERNATIONAL, vol. 45B (3-4), 1987, pages B155-B161, XP002040591;  LESUEUR H ET AL: "ELECTRICALLY ASSISTED PARTIAL OXIDATION OF METHANE" INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 19, no. 2, 1 fevrier 1994, pages 139-144, XP000417226;  LIVSHITS ET AL: "Physico-chemical origin of superpermeability" JOURNAL OF NUCLEAR MATERIALS, vol. 170, 1990, pages 79-94, XP002040593;  O'BRIEN ET AL: "Hydrogen production via plasma reformers" PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE, 11-16 AUGUST 1996, vol. 3, 1996, pages 1747-1752, XP002040590;  SHIGEYUKI UEMIYA ET AL: "HYDROGEN PERMEABLE PALLADIUM-SILVER ALLOY MEMBRANE SUPPORTED ON POROUS CERAMICS" JOURNAL OF MEMBRANE SCIENCE, vol. 56, no. 3, 1 mars 1991, pages 315-325, XP000176959;  TANAKA ET AL: "A stoichiometric conversion of CO + CH4 into CO + 2 H2 by microwave discharge" JOURNAL OF THE CHEMICAL SOCIETY, CHEMICAL COMMUNICATIONS, 1982, pages 921-922, XP002040589;  XOMERITAKIS ET AL: "Fabrication of a thin palladium membrane supported in a porous ceramic substrate by chemical vapour deposition" JOURNAL OF MEMBRANE SCIENCE, vol. 120, 1996, pages 261-272, XP002040592WO9828223-A1  TANAKA ET AL: "A stoichiometric conversion of CO + CH4 into CO + 2 H2 by microwave discharge" JOURNAL OF THE CHEMICAL SOCIETY, CHEMICAL COMMUNICATIONS, 1982, pages 921-922, XP002040589;  LESUEUR H ET AL: "ELECTRICALLY ASSISTED PARTIAL OXIDATION OF METHANE" INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 19, no. 2, 1 fevrier 1994, pages 139-144, XP000417226;  O'BRIEN ET AL: "Hydrogen production via plasma reformers" PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE, 11-16 AUGUST 1996, vol. 3, 1996, pages 1747-1752, XP002040590;  KERKER: "Herstellung von Reduktionsgas oder Synthesegas mit Lichtbogenplasmaverfahren" ELECTROW[RME INTERNATIONAL, vol. 45B (3-4), 1987, pages B155-B161, XP002040591;  SHIGEYUKI UEMIYA ET AL: "HYDROGEN PERMEABLE PALLADIUM-SILVER ALLOY MEMBRANE SUPPORTED ON POROUS CERAMICS" JOURNAL OF MEMBRANE SCIENCE, vol. 56, no. 3, 1 mars 1991, pages 315-325, XP000176959;  XOMERITAKIS ET AL: "Fabrication of a thin palladium membrane supported in a porous ceramic substrate by chemical vapour deposition" JOURNAL OF MEMBRANE SCIENCE, vol. 120, 1996, pages 261-272, XP002040592;  LIVSHITS ET AL: "Physico-chemical origin of superpermeability" JOURNAL OF NUCLEAR MATERIALS, vol. 170, 1990, pages 79-94, XP002040593 cite dans la demandeUS6245309-B1  Chapelle et al., French Patent abstract 2,724,860 Mar. 1996.