| 摘要 |
1,135,980. Separating hydrocarbons. LEUNAWERKE " WALTER ULBRICHT" " VEB. 6 Dec., 1965, No. 35049/68. Divided out of 1,135,801. Heading C5E. [Also in Division B1] Straight chain paraffins are separated in the gas phase from hydrocarbon mixtures containing them by selective adsorption on a Type 5A molecular sieve containing a hydrogenation catalyst, either contained in the crystal lattice or in admixture therewith, in the presence of hydrogen or an. oxygen-free hydrogen-containing gas mixture, flushing, e.g. with hydrogen, and desorbing the adsorbed paraffins, e.g. with n-pentane, the entire process being conducted substantially adiabatically. The hydrogenation catalyst is suitably a Group VI or VIII metal, and is preferably nickel, and amounts to 0À1-10%, preferably 0.5-5%, by weight of the anhydrous sieve. When in admixture with the sieve, the hydrogenation catalyst is suitably nickel molybdate.
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