FORFARANDE FOR FRAMSTELLNING AV ETAN GENOM SELEKTIV HYDROGENOLYS AV ALKANER OVER EN KATALYSATOR INNEHALLANDE VISSA METALLER PA EN BERARE AV EN INERT ELDFAST OXID SOM INNEHALLER UNDER 0,5 VIKT % SOŸ4--(SULFATJONER) ...

摘要

1499622 Ethane by hydrogenolysis of alkanes SOC NATIONALE ELF AQUITAINE 23 June 1976 [30 June 1975 14 Nov 1975 16 Dec 1975] 26040/76 Heading C5E Ethane is produced by introducing into a reactor at a space velocity of 200-10,000 h-1 a mixture of H 2 and alkanes over a catalyst comprising Ir and/or Rh incorporated in a support of inert refractory oxide in which the SO 4 -- ion content is lower than 0À5 wt. per cent. The catalyst may further comprise another Group VIII metal selected from Os, Co, Pd, Fe, Ni, Ru and Pt. The total percentage of metal in the catalyst may be 0À1-10 wt. per cent. The hydrogenolysis may be carried out at 150-550‹ C. 1-80 bar and a mole ratio of H 2 : alkane of 2 to 20:1. The refractory support may be Al 2 O 3 , SiO 2 , SiO 2 -Al 2 O 3 , MgO, TiO 2 or ZnO. The ethane may be steam-cracked to give ethylene and the hydrogen produced recycled to the hydrogenolysis stage.