摘要:
A devise for carrying out chemical reactions and processes in high-frequency fields, comprises a high-frequency chamber 2 for irradiating a solid, liquid or gaseous substance while under pressure with at least one radiation source and a reactor for exposing to a high-frequency field. The reactor being connectively coupled to the upper wall 4 of the high-frequency chamber 2 through a sealable connection 3. Rail elements 5 are provided around the reactor, and configured to form a pressure-resistant cage. The rail elements 5 each have a guide 11 for holding a crown-shaped holder 12. The holder 12 is fixed in its position by the guides 11 of the rail elements 5. Multiple reaction chambers can be incorporated as a batch reactor system.
摘要:
The present invention is directed to a catalyst comprising palladium on a porous Silica glass as carrier, as well as to the use of such catalyst for the selective hydrogenation of alkines to alkenes.
摘要:
The present invention is directed to a catalyst comprising palladium on a porous Silica glass as carrier, as well as to the use of such catalyst for the selective hydrogenation of alkines to alkenes.
摘要:
An epoxidized polyalkenylene is prepared reacting a polyalkenylene, an aqueous solution of 15 to 90% by volume of hydrogen peroxide and a carboxylic acid having from 1 to 3 carbon atoms in the presence of a catalyst which is phosphonic acid, a derivative of phosphonic acid or a mixture thereof, without addition of an organic solvent or water, to obtain the epoxidized polyalkenylene. The epoxidized polyalkenylene has a number-average molar mass of between 500 and 50 000 g/mol and an epoxide oxygen content of between 1 and 25 percent by mass.
摘要:
A magazine-type sample rotation body (7) is arranged in a high frequency chamber (5) so that it rotates away from the horizontal, the body (7) accommodating, in fixed location, reactor blocks (10) that are sealed or sealable from fluids such that fluids contained in sample vessels in the reactor blocks can be mixed before, during and after high frequency exposure because of the rotational movement of the sample rotation body.