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 gas-tight multilayer composite tube which has a heat transfer coefficient of > 500 W/m 2 /K and contains at least two layers, one layer made of a nonporous monolithic oxide ceramic and one layer made of an oxide fiber composite ceramic, and relates to a connection piece containing at least one gas-conducting metal line, some regions of which overlap at least two ceramic layers in the longitudinal direction of the composite tube, wherein one ceramic layer contains a nonporous monolithic ceramic, and the other ceramic layer contains a fiber composite ceramic. The invention also relates to the use of the multilayer composite tube as a reaction tube for endothermic reactions, jet tubes, flame tubes, or rotary tubes.
Abstract:
A process for preparing C 1 -C 10 -aldehydes by oxidative dehydrogenation of C 1 -C 10 -alcohols over a shaped catalyst body obtainable by three-dimensional forming and/or arrangement in the space of silver-containing fibres and/or filaments, characterized in that the mean diameter or the mean diagonal length of an essentially rectangular or square cross section of these silver-containing fibres and/or filaments is in the range from 30 µm to 200 µm.