Abstract: The invention relates to a hydrogen generator comprising a stack (1) of least one functional element with an anode (2) for the production of oxygen, a cathode (3) for the production of hydrogen and a membrane (4) positioned between the anode (2) and the cathode (3). In said generator the anode (2) is communicated with an anode separator (5) and the cathode (3) is communicated with a cathode separator (6), said separators (5, 6) having a free variable volume. The aforementioned stack (1) is located inside a sealed chamber (7) into which a gas is introduced via a gas inlet (8) in order to pressurise the interior of the chamber (7). The invention also includes a processor which maintains the ratio between the anode and cathode pressures and between the free variable volume of the cathode separator (6) and the free variable volume of the anode separator (5) greater than or equal to 2:1.

Abstract: The method includes the preparation of a preimpregnated product that undergoes a heat treatment between 70 and 1100 deg. C., is embedded with an inert substance that comprises a charge and a polymeric binder in a quantity greater than the volume of the voids of the single-layer yarn which is calculated by means of the formula [1], where mn is the mass of inert substance, dn is the density of the inert substance, a is the length of the preimpregnated product, b is the width of the preimpregnated product, h is the thickness of the preimpregnated product, mpr is the mass of the preimpregnated product, and dfib is the density of the fiber, and is heated between 160 deg. C. and 200 deg. C., a pressure of between 1 and 5 MPa being applied simultaneously. m n = d n · ( a · b · h - m pr d fib ) .

Abstract: The reactor is comprised of a body, a tubular ceramic porous membrane element placed coaxially inside it to remove the hydrogen, and a catalyst for the thermal breakdown of the hydrogen sulfide into sulfur and hydrogen, wherein said catalyst has been deposited directly on the tubular ceramic porous membrane element in the form of a layer. The reactor is applicable for treating gases containing hydrogen sulfide.

Abstract: The invention relates to the method and device for plasmacatalytic conversion of liquid hydrocarbons, such as engine fuels, into a synthesis gas by employing a pulse-periodic pseudocorona streamer microwave discharge (or semi-continuous microwave discharge) in the presence of air, and in certain cases, water.

Abstract: Membrane-electrode assembly consisting of a cationic exchange membrane which contains fluorine (made of hydrolyzed copolymer of tetrafluoro-ethylene and vinyl ether which contains perfluorosulfur with PE=900-1300) and porous layers of electrode material (made of electrocatalyst), inactive electroconductor material and fluoropolymer agglutinating material arranged on both surfaces of the cationic exchange membrane. The cationic exchange membrane which contains the fluorine is made of hydrolyzed copolymer of tetrafluoroethylene with vinyl ether which contains perfluorosulfur, having a crystallinity grade between 2 and 8%; porous layers of the electrode material are obtained which have a porosity comprised between 40 and 70% and decreasing in the direction of the cationic exchange membrane surface with a porosity gradient from 5 to 15% par 1&mgr;. Said membrane-electrode assembly is used in fuel cells, in water electrolysis and in other electrochemical process.