Abstract:
The invention relates to catalyst-coated supports that comprise at least one porous and cavity-including catalyst layer, said cavities having irregular hollow spaces with dimensions of larger than 5 µm in at least two dimensions or with cross-sectional surfaces of at least 10 µm 2 . The catalyst coatings are characterized by an excellent adhesive pull strength and can preferably be used in microreactors.
Abstract:
Fixed-bed reactors exist, which can be directly heated and which are provided for carrying out reactions. They are, however, very inefficient and can hardly be used at high temperatures. The inventive reactor (1) overcomes these drawbacks. The reactor comprises a reactor housing and at least one pair of electrodes (5, 7) having a fixed bed. The fixed bed is made of an electrically conductive material, is arranged between the pair of electrodes, it can be flown through by a fluid, and is suited for a resistance heating. The electrodes (5, 7) are platelike or tubular and are parallel to one another or are concentrically arranged inside one another. A preferred reactor having two tubular electrodes comprises an inner cylindrical chamber (11) as well as a hollow cylindrical chamber (6) that is located between the electrodes. The reactor is suited for carrying out gas reactions such as the production of hydrocyanic acid and the BMA process.
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 μm in at least two dimensions or having cross-sectional areas of at least 10 μm2. The catalytic coatings are distinguished by a high adhesive strength and can preferably be used in microreactors.
Abstract:
The present invention discloses a microreactor for performing heterogeneous catalytic reactions, being of plate or stack construction for industrial use, with provision made for chambers between the plates for the chemical reaction and for the heat removal. Inside the reaction chambers, catalyst material is applied to the internal walls or filled into recesses, and in all chambers there are spacers. In particular the slot-shaped reaction chambers have channels with a hydraulic diameter smaller than 1500 μm and a ratio of free slot width to free slot height in the range of 10 to 450.
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 μm in at least two dimensions or having cross-sectional areas of at least 10 μm2. The catalytic coatings are distinguished by a high adhesive strength and can preferably be used in microreactors.
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 μm in at least two dimensions or having cross-sectional areas of at least 10 μm2. The catalytic coatings are distinguished by a high adhesive strength and can preferably be used in microreactors.
Abstract:
The invention relates to a microreactor (1) composed of plates or stacks for carrying out heterogenically catalysed reactions for commercial use, said reactor being provided with chambers between the plates for the chemical reaction and the dissipation of heat. Catalytic material is applied to the internal walls or lies in recesses of the reaction chambers and spacer elements (11) are provided in all chambers. The invention is characterised i n that the slot-type reaction chambers of the microreactor comprise channels with a hydraulic diameter of less than 1500 micrometers and a ratio of free slot width to free slot height ranging between 10 and 450.
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 μm in at least two dimensions or having cross-sectional areas of at least 10 μm2. The catalytic coatings are distinguished by a high adhesive strength and can preferably be used in microreactors.