Abstract: The present invention relates to a packing structure for containers, characterized in that it comprises a material of xonotlite and/or tobermorite and/or foshagite crystal structure crystallized in the form of needles, at least 50% by volume of which have a length ranging from 2 to 10 ?m and a thickness ranging from 0.2 to 1 ?m. Process for manufacturing such a packing structure and gas container containing it.

Abstract: A composition and method for a Catalytic Partial Oxidation (CPO) of methane to synthesis gas. The catalyst allows the process to proceed at low residence time providing a long time thermal stability. The perovskite structure [AzA?1-z][B1-x-yNix Rhy] O3-? of the catalyst is obtained using mainly La, Sr, as A and A? cation sites (A, A?: actinide and/or lanthanide, elements and/or elements from Group I and II) and mainly Fe, Ni, as B cation sites (B: transition metal element and/or element from Group III to V).

Abstract: The present invention relates to a container packing structure, characterized in that it comprises a crystalline phase containing 55 to 97% by weight of xonotlite crystallites and 3 to 45% by weight of tobermorite crystallites. It also relates to a method for fabricating such a packing structure, and the container containing same, and its use for storing fluids such as gases.

Abstract: The invention concerns an oxide ion conductive ceramic membrane, characterized in that it comprises a non-null finite volume with non-null total thickness E, comprising a dense layer (CD) of a solid electrolyte, a so-called bonding layer (CA), of two porous electrodes (EP) and (EP?), two porous current collectors (CC) and (CC?), and at least at least a coating porous layer (ER), characterized in that the thickness E of the volume of said membrane, is equal to the sum of the thickness of each of said elements. The membrane is used for separating oxygen from air or from a gas mixture containing same.

Abstract: A composite material (M) comprising: at least 75% by volume of a mixed electronic conductor compound oxygen anions O<2->(C1) selected from doped ceramic compounds which, at the temperature of use, are present in the form of a crystalline network having ion oxide lattice vacancies and, more particularly, in the form of a cubic phase, a fluorite phase, a perovskite phase, of the aurivillius variety, a Brown-Millerite phase or a pyrochlore phase; and 0.01%-25% by volume of a compound (C2) which is different from compound (C1), selected from oxide-type ceramic materials, non-oxide type ceramic materials, metals, metal alloys or mixtures of said different types of material; and 0%-2.5% by volume of a compound (C3) produced from at least one chemical reaction represented by the equation: xFC1+yFC2 - - - >zFC3, wherein FC1, FC2 and FC3 represent the raw formulae of compounds (C1), (C2) and (C3) and x, y and z represent rational numbers above or equal to 0.

Abstract: The invention concerns a mixed electronic and O2? anion conductive perovskite material, of formula (I): A(a)(1-x-u)A?(a?1)xA?(a?)uB(b)(1-s-y-v)B(b+1)sB?(b+?)yB?(b?)vO3-d, wherein: a, a?1, a?, b, b+1, b+? et b? are integers representing respective valences of the atoms A, A?, A?, B, B?, B?; a, a?, b, b?, ?, x, y, s, u, v et ? such that the electrical neutrality of the crystal lattice is preserved; A represents an atom selected among scandium, yttrium or in the families of lanthanides, actinides or alkaline-earth metals; A? represents an atom selected among Al, Ga, In, or Tl; B, B?, B? represents an atom selected among the transition metals, Al, In, Ga, Ge, Sb, Bi, Sn or Pb. The invention also concerns the method for preparing said material and its use as mixed conductive material of a catalytic membrane reactor, for use in synthesizing synthetic gas by oxidation of methane or natural gas.

Abstract: Preparation of a supported tubular ceramic membrane composed of two coaxial layers along a axis (x), a first layer with a non-zero thickness es of a support material (S) and a second layer with a non-zero thickness eM of an active material (M), characterised in that it comprises the following steps in sequence: a step (a) to shape said supported membrane by simultaneous coaxial co-extrusion of a paste PS of the support material (S) at a flow velocity along the axis (x) VS and a paste PM of active material (M) with a flow velocity along the axis (x) VM, where VS=VM; a step (b) to dry the co-extrudate formed in step (a); a step (c) to debind the co-extrudate dried in step (b), and a step (d) to apply a heat treatment to co-sinter the two coaxial layers of the product obtained in step (c); Device for implementation of step (a).

Abstract: The invention concerns an oxide ion conductive ceramic membrane, characterised in that it comprises a non-null finite volume with non-null total thickness E, comprising a dense layer (CD) of a solid electrolyte, a so-called bonding layer (CA), of two porous electrodes (EP) and (EP′), two porous current collectors (CC) and (CC′), and at least at least a coating porous layer (ER), characterised in that the thickness E of the volume of said membrane, is equal to the sum of the thickness of each of said elements. The membrane is used for separating oxygen from air or from a gas mixture containing same.

Abstract: The present patent deals with new catalysts for the Catalytic Partial Oxidation (CPO) of methane to synthesis gas (hydrogen and carbon monoxide), a gas mixture widely employed in industry. The discovered perovskite catalysts allows to carried out the process at low residence time obtaining a long time stability in the reaction conditions notwithstanding the high temperature reached in the reactor. The fundamental component of the catalyst is the perovskite structure [AzA′1-z][B1-x-yNixRhy]O3-&dgr; obtained using mainly La, Sr, as A and A′ cation sites (A, A′: actinide and/or lanthanide, elements and/or elements from Group I and II) and mainly Fe, Ni, as B cation sites (B: transition metal element and/or element from Group III to V). The active phases Ni and/or Rh are inserted in the perovskite structure during the preparation and are reduced in situ or before the catalytic tests.

Abstract: The invention concerns an oxide ion conductive ceramic membrane, characterised in that it comprises a non-null finite volume with non-null total thickness E, comprising, a dense layer (CD) of a solid electrolyte, a so-called bonding layer (CA), of mixed conductive porous cathode (EP) and porous anode (EP′), a cathode current collector (CC) and an anode current collector (CC′), a coating porous layer (ER), and a coating porous layer (ER′), and characterised in that the volume E of said membrane, is equal to the sum of the thickness of said elements. The membrane is used for separating oxygen from air or from a gas mixture containing same and in particular for producing ultra-pure oxygen under high pressure in a closed chamber.

Abstract: A ceramic membrane having a non-zero volume and including: a) a dense layer, having opposed faces of areas S and S′ and having a non-zero thickness e, of a solid electrolyte; b) two porous electrodes, which are hybrid conductors and have non-zero thicknesses e1 and e′1, which are identical or different, coated on non-zero areas s1 and s′1, which are identical or different, of the two opposed faces of areas S and S′ of the solid electrolyte; c) two porous current collectors, of non-zero thicknesses, e2 and e′2, which are identical or different, coated on non-zero areas s2 and S′2, which are identical or different, of the two porous electrodes; and d) at least one porous covering layer, of non-zero thickness e3, coated on a non-zero area s3, of at least one of the collectors, a thickness E of the membrane is equal to the sum of the thickness of each of the elements a)-d).

Abstract: Provided is a device for treating a food product in order to reduce or eliminate the detrimental effects of the presence of oxygen which is in contact with the external surface of the product.

Abstract: A process for preparing a solid composite electrolyte comprising at least one compound of the BIMEVOX family is provided. The process comprises at least one step of preparing a mixture of one or more compounds of the BIMEVOX family with one or more chemically inert compounds, at least one step of compacting the mixture obtained, and at least one sintering step during which the temperature reached, over a nonzero time interval, has a value greater than the optimum sintering temperature for the compound of the BIMEVOX family.

Abstract: A process is provided for treating food products in order to reduce or eliminate the detrimental effects of the presence of oxygen in the atmosphere which is in contact with the products and, more particularly, the external surface of the products. A non-zero quantity of oxygen is extracted from the atmosphere by implementing a solid electrolyte which is an O2− ion conductor and is essentially impermeable to the gases. The invention has applicability to preserving frying oil baths.

Abstract: Process for separating oxygen from a gas mixture containing it employs a solid-electrolyte electrochemical cell, where the cell includes a homogeneous structure of one or more BIMEVOX derivatives, with dynamic electrodes created "in situ" that are reversible and self-adaptive, and at least two current collectors.