Abstract:
Process for the production of synthesis gas (3), in which methane and carbon dioxide (2) are introduced into a reaction space (R) and reacted in the presence of a solid (W) at elevated temperatures to give hydrogen and carbon monoxide. Methane and carbon dioxide are passed through a carbon-containing granular material (W) and reacted in a high-temperature zone (H).
Abstract:
The invention relates to a mixture containing at least one thermoplastic polymer as component (A) and at least one photocatalytically active particle comprising a non-porous core with at least one metal or semi-metal oxide, having a diameter of between 0.1 nm and 1 μm and at least one porous sleeve that at least partially surrounds the core and contains at least one other metal or semi-metal oxide with an average layer thickness of between 0.1 and 10 nm as component (B). The invention also relates to a method for producing said mixture according to one of claims 1 to 5, by mixing components (A) and (B), to the use of the mixture as a photocatalytically active surface to moulded parts containing said mixture and to the use of the mixture for producing moulded parts.
Abstract:
The invention relates to a method for producing coated nanoparticles which comprise a core holding at least one first substance and at least one envelope from at least one additional substance that at least partially surrounds the core, in a fluid system. The invention also relates to nanoparticles obtainable by said method, to nanoparticles comprising a non-porous core that holds at least one first substance, and at least one envelope from at least one additional substance that at least partially surrounds the core, the nanoparticles having a narrow particle-size distribution. The invention finally relates to the use of the nanoparticles in photocatalysis and to a device for carrying out the method.
Abstract:
The invention relates to a process for utilizing a hydrocarbon-containing and/or carbon dioxide-containing blast furnace gas, accompanying gas and/or biogas, characterized in that hydrocarbon-containing and/or carbon dioxide-containing blast furnace gas, accompanying gas and/or biogas is introduced into a reaction chamber, and the multicomponent mixture present in the blast furnace gas, accompanying gas and/or biogas is converted in a high-temperature zone at temperatures of above 1000°C and in the presence of a support into a product-gas mixture which consists of more than 95% by volume CO, CO 2 , H 2 , H 2 O, CH 4 and N 2 , and optionally into a carbon-containing solid of which more than 75% by weight, based on the total mass of the carbon-containing solid, is deposited onto the support, wherein the flow velocity of the gas mixture blast furnace gas, accompanying gas and/or biogas in the reaction zone is less than 20 m/s.
Abstract:
The present invention relates to a process for preparing polyisocyanates from natural raw material sources by starting from a biomass material and preparing a composition which comprises low molecular mass aromatics that contain per molecule at least one hydroxyl group or at least one alkoxy group (oxyaromatics), reacting these oxyaromatics to form the corresponding aromatic amines, and, optionally after condensation with formaldehyde, carrying out further reaction with phosgene to form compounds containing isocyanate groups.
Abstract:
The present invention relates to a coating material comprising (A) at least one binding agent as component (A) and (B) at least one photocatalytically active particle, comprising a core of at least one first material having a diameter of 0.1 to 1 µm and at least one shell at least partially encompassing the core and made of at least one second material having an average layer thickness of 0.1 to 10 nm as component (B).
Abstract:
The present invention relates to a coating material comprising (A) at least one binding agent as component (A) and (B) at least one photocatalytically active particle, comprising a core of at least one first material having a diameter of 0.1 to 1 µm and at least one shell at least partially encompassing the core and made of at least one second material having an average layer thickness of 0.1 to 10 nm as component (B).