Abstract: A grinding wheel includes a support body which has a circumferential surface and a central coupling region for attaching the grinding wheel to a rotary drive for rotating the grinding wheel about a rotational axis running through the central coupling region. The grinding wheel also includes a grinding layer which is applied onto the circumferential surface of the support body. The support body includes a first part and a second part connected to the first part. The first part has the circumferential surface, and the second part has the coupling region and consists essentially of a vibration-damping material.

Abstract: An apparatus for generating electric power includes a hydrogen transfer unit for transferring hydrogen from a hydrogen storage medium to a hydrogen transfer medium and a power generation unit for generating electric power from the hydrogen transfer medium.

Abstract: A supporting body for a grinding tool, the supporting body including an abrasive pad having a preferably circumferential supporting surface for an abrasive material, particularly a superabrasive material. The supporting body consisting substantially of a composite material which is free of abrasive material and consists of a plurality of layers of a natural fiber material which are arranged one atop the other and are connected to each other by plastic, preferably phenolic resin. The natural fiber material preferably is a cotton fabric or paper, and the supporting body includes a first, preferably cylindrical or hollow cylindrical body and at least one additional, preferably cylindrical or hollow cylindrical body, in which the bodies are connected, preferably adhesively bonded, to each other.

Abstract: An apparatus for generating electric power includes a hydrogen transfer unit for transferring hydrogen from a hydrogen storage medium to a hydrogen transfer medium and a power generation unit for generating electric power from the hydrogen transfer medium.

Abstract: The invention relates to a method for the recovery of precious metal from materials containing precious metal, said method comprises the following steps of: A) bringing the materials containing the precious metal into contact with an oxidizing agent, B) bringing the material containing the precious metal into contact with a reducing agent. Said method offers the possibility of recovering precious metal in a simple manner and in high purity from secondary materials.

Abstract: The invention relates to a grinding wheel (1) comprising a support body (2, 3) which has a central coupling region (4) for attaching the grinding wheel (1) to a rotary drive for rotating the grinding wheel (1) about a rotational axis (5) running through the coupling region (4) and which has a circumferential surface (6). The grinding wheel also comprises a grinding layer (7) which is applied, in particular sintered, onto the circumferential surface (6) of the support body (2, 3). The support body (2, 3) comprises a first part (2) and a second part (3) connected to the first part. The first part (2) has the circumferential surface (6), and the second part (3) has the coupling region (4) and consists substantially of a vibration-damping material.

Abstract: The invention relates to a method for the recovery of precious metal from materials containing precious metal, said method comprises the following steps of: A) bringing the materials containing the precious metal into contact with an oxidizing agent, B) bringing the material containing the precious metal into contact with a reducing agent. Said method offers the possibility of recovering precious metal in a simple manner and in high purity from secondary materials.

Abstract: The present invention refers to highly sinter-stable metal nanoparticles supported on mesoporous graphitic spheres, the so obtained metal-loaded mesoporous graphitic particles, processes for their preparation and the use thereof as catalysts, in particular for high temperature reactions in reducing atmosphere and cathode side oxygen reduction reaction (ORR) in PEM fuel cells.

Abstract: The present invention refers to highly sinter-stable metal nanoparticles supported on mesoporous graphitic spheres, the so obtained metal-loaded mesoporous graphitic particles, processes for their preparation and the use thereof as catalysts, in particular for high temperature reactions in reducing atmosphere and cathode side oxygen reduction reaction (ORR) in PEM fuel cells.

Abstract: There is disclosed a continuous casting mold for casting billets and blooms including a stirring means to produce a rotating electromagnetic field of force. It is sought to be able to use a continuous casting mold of this type facultatively with free-stream casting or with immerged-tube casting. To this end, the continuous casting mold includes at least two stirring means arranged one above the other in height. At least one the stirring means is arranged in the upper half of the continuous casting mold and at least one of the stirring means is arranged in the lower half of the continuous casting mold. The at least two stirring means are electrically connected and operable independently of one another.

Abstract: There is disclosed a continuous casting mold for casting billets and blooms including a stirring means to produce a rotating electromagnetic field or force. It is sought to use a continuous casting mold of this type facultatively with free-stream casting or with immerged-tube casting. The continuous casting mold includes at least one stirring means which is displaceable over the height of the continuous casting mold and is fixable in different height positions.