Patent EA-000761-B1 (EA)
Title: Support catalyst and process for hydrogenation of multiply unsaturated c2-c8 carbons
Inventor: FLICK KLEMENS
IPC: B01J35/06
Filed: 1997-09-05
Abstract: 1. A support catalyst representing at least one substance which is active as catalyst and/or promoter applied onto a support, characterized in that the support represents woven or knitted meshes or foils. 2. A support catalyst as claimed in claim 1, characterized in that the layer of the catalylically active substance(s) has (have) a thickness of from 0.2 nrn to 100 nm. 3. A support catalyst as claimed in claim 1 or 2, characterized in that the layer of the promoter(s) has (have) a thickness of from 0.1 to 20 nm. 4. A support catalyst as claimed in any of the claims 1 to 3, characterized in that the substance(s) active as catalyst and/or promoter is (are) applied onto the support by vapor deposition and/or sputtering or impregnation. 5. A support catalyst as claimed in any of the claims 1 to 4, characterized in that it comprises at least one monolith which is fabricated from the woven or knitted mesh or foil which is preferably in the form of a strip. 6. A support catalyst as claimed in any of the claims 1 to 5, characterized in that the woven or knitted mesh or foil comprises metal or inorganic material. 7. A support catalyst as claimed in any of the claims 1 to 6, characterized in that it comprises a woven or knitted mesh or foil which has been subjected to heat treatment at from 400 to 1100 degree C in an oxygen-containing atmosphere for from 0.5 to 24 hours effected prior to vapor deposition and/or sputtering. 8. A support catalyst as claimed in any of the claims 1 to 7, characterized in that the substances active as catalyst are selected from among the elements of transition groups I and/or VII and/or VIII and/or the promoters are selected from among the elements of main groups III, IV, V, and VI and transition groups II, III. IV, and VII of the Periodic Table of the Elements. 9. A process for the hydrogenation of multiply unsaturated C2-C8 aliphatic hydrocarbons in a fluid comprising these by contacting with a support catalyst packing in the presence of free hydrogen, characterized in that the fluid is contacted with a packing comprising a catalyst representing at least one substance which is active as catalyst and/or promoter applied onto a support, said support represents woven or knitted meshes or foils. 10. A process as claimed in claim 9, characterized in that as fluid C2, C3, C4, C5, and/or C6 streams, preferably from a steam cracker, or a catalytic cracker, in which the corresponding multiply unsaturated hydrocarbons, in particular alkynes and/or alkynenes and/or alkadienes; are present, are used. 11. A process as claimed in claim 9 or 10, characterized in that the hydrogenation, preferably of C2 and/or C3 streams, is carried out in the gas phase. 12. A process as claimed in any of the claims 9-10, characterized in -that the hydrogenation, preferably of C3, C4, C5, and/or C6 streams is carried out in the liquid phase or in a mixed liquid/gas phase having at least 50 % by weight of the fluid in the liquid phase. 13. A process as claimed in any of the claims 9 -12, characterized in that the reaction is carried out in combination with a simultaneous distillation or rectification, wherein me fluids can be C3, C4, C5, and/or C6 streams.