Abstract: Flow type electrochemical cells are disclosed. The electrochemical cell has an anode half-cell, a cathode half-cell, and permeable separating layer. The half-cells are bounded by side elements. Respective porous electrodes are housed in the half-cells. The permeable separating layer is disposed between the anode half-cell and the cathode half-cell. An electrolyte region connected to an electrolyte feed and an electrolyte outflow region connected to an electrolyte drain are further provided. An electrolyte inflow region and an electrolyte outflow region are disposed on opposite sides of the porous electrodes such that inflowing electrolyte flows through the porous electrode perpendicularly to the permeable separating layer.

Abstract: Flow type electrochemical cells are disclosed. The electrochemical cell has an anode half-cell, a cathode half-cell, and permeable separating layer. The half-cells are bounded by side elements. Respective porous electrodes are housed in the half-cells. The permeable separating layer is disposed between the anode half-cell and the cathode half-cell. An electrolyte region connected to an electrolyte feed and an electrolyte outflow region connected to an electrolyte drain are further provided. An electrolyte inflow region and an electrolyte outflow region are disposed on opposite side of the porous electrodes such that inflowing electrolyte flows through the porous electrode perpendicularly to the permeable separating layer.

Abstract: A modular element having a high-temperature stable main body, including at least one metallic or ceramic plate, which has at least one through-going aperture for the insertion of a ceramic capillary membrane and at least one potting in the form of a sufficiently gas-tight and high-temperature stable joint between the metallic or ceramic plate and the ceramic capillary membrane. The through-going aperture of the metallic or ceramic plate having an extension for accommodating the sufficiently gas-tight and high-temperature stable joint on at least one side of the metallic or ceramic plate.

Abstract: A porously coated, densely sintered ceramic membrane, which can be produced from a green membrane and subsequent sintering. The membrane is coated with ceramic material, which contains noble metals, which can be produced by application and subsequent thermal treatment. The noble metals are contained at a concentration of 2.5 to 5 mass percent.

Abstract: A modular element having a high-temperature stable main body, including at least one metallic or ceramic plate, which has at least one through-going aperture for the insertion of a ceramic capillary membrane and at least one potting in the form of a sufficiently gas-tight and high-temperature stable joint between the metallic or ceramic plate and the ceramic capillary membrane. The through-going aperture of the metallic or ceramic plate having an extension for accommodating the sufficiently gas-tight and high-temperature stable joint on at least one side of the metallic or ceramic plate.

Abstract: A porously coated, densely sintered ceramic membrane, which can be produced from a green membrane and subsequent sintering. The membrane is coated with ceramic material, which contains noble metals, which can be produced by application and subsequent thermal treatment. The noble metals are contained at a concentration of 2.5 to 5 mass percent.

Abstract: Catalyst-coated support, method for producing the same, reactor comprising the same and use thereof. Supports having a catalytic coating comprising at least one porous and cavity-containing catalyst layer are described, cavities being irregular spaces having dimensions greater than 5 ?m in at least two dimensions or having cross-sectional areas of at least 10 ?m2. The catalytic coatings are distinguished by a high adhesive strength and can preferably be used in microreactors.

Abstract: High-temperature-resistant devitrifying solder glasses that contain 20-45 mol % BaO, 40-60 mol % SiO2, 0-30 mol % ZnO, 0-10 mol % Al2O3, 0-5 mol % BaF2, 0-2 mol % MgO, 0-2 mol % CaO, 0-2 mol % TiO2 and 0-10 mol % B2O3, as well as 0.5-4 mol % M2O3 (M=Y, La or rare earth metals) and/or 0.5-4 mol % ZrO2. The application, of said solder glasses are also disclosed.

Abstract: Supports having a catalytic coating comprising at least one porous and cavity-containing catalyst layer are described, cavities being irregular spaces having dimensions greater than 5 ?m in at least two dimensions or having cross-sectional areas of at least 10 ?m2. The catalytic coatings are distinguished by a high adhesive strength and can preferably be used in microreactors.

Abstract: Supports having a catalytic coating comprising at least one porous and cavity-containing catalyst layer are described, cavities being irregular spaces having dimensions greater than 5 ?m in at least two dimensions or having cross-sectional areas of at least 10 ?m2. The catalytic coatings are distinguished by a high adhesive strength and can preferably be used in microreactors.

Abstract: The invention relates to a synthesis reactor and to a method for producing vinyl acetate, in which gaseous ethylene and acetic acid, in addition to oxygen or gases containing oxygen, react catalytically. The inventive synthesis reactor is a wall reactor, in which the catalytic synthesis takes place in a plurality of reaction chambers, whose free flow cross sections measure less than 2000 ?m, preferably 1000 ?m and whose indirectly cooled walls are coated with a palladium-gold catalyst.

Abstract: The invention relates to an oxidation reactor and process suited to operate the said reactor which houses a multitude of gas-tight and oxygen conductive membrane elements the external surfaces of which are arranged on the side of a reaction chamber to be filled with catalyst and which constitute, in conjunction with the membrane elements penetrable by oxygenous gas, a connection between the distribution chamber and a collection chamber and/or discharge section of the reactor. The reactor is characterised in that one or several spacer pieces establish a defined minimum distance between the external surface of a membrane element and the catalyst in the reaction chamber.

Abstract: A process for reactions with or to form peroxidic compounds in a wall reactor whose reaction space has a specific material coating is described. Both higher space-time yields and increased selectivities can be achieved by means of the process.

Abstract: Supports having a catalytic coating comprising at least one porous and cavity-containing catalyst layer are described, cavities being irregular spaces having dimensions greater than 5 ?m in at least two dimensions or having cross-sectional areas of at least 10 ?m2. The catalytic coatings are distinguished by a high adhesive strength and can preferably be used in microreactors.