Abstract: The invention relates to a device for coating a component or semi-finished product with a chromium layer, the device comprising an undivided deposition cell, in which there is an anode and which is suitable for receiving a cathodically connected component, wherein: there is an electrolyte solution containing chromium(II) in the deposition cell; the device has an electrolytic cell, which is divided by a membrane disposed in the electrolytic cell into a cathode chamber, in which there is a cathode, and an anode chamber, in which there is an anode; the cathode chamber is connected to the deposition cell by means of a line and a pump disposed in the line; the pump can pump liquid from the cathode chamber into the deposition cell and/or can pump liquid from the deposition cell into the cathode chamber.

Abstract: The invention relates to a method for producing flexible and porous adsorbents based on oxidic and/or non-oxidic ceramic material containing carbon. The inventive method is characterized by the following steps: (a) producing a flat base matrix whose constituents are held together essentially by hydrogen bridge bonds, on a machine suited for producing paper; (b) applying and/or impregnating the surface of the base matrix, on one or both sides, with polymeric addition agents; (c) treating the base matrix under pyrolysis conditions at an increased temperature in an atmosphere containing essentially no oxygen. The invention also relates to membranes that can be produced according to the aforementioned method, to flexible material that can be produced by using these membranes, and to their use for separating and purifying fluids.