| 摘要 |
1,181,188. Isomerization. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 27 Sept., 1968 [29 Sept., 1967], No. 46039/68. Heading C5E. [Also in Division C1] Hydrocarbons may be isomerized in the presence of a catalyst comprising at least one metal or compound of Groups VIA, VII A or VIII of the Mendeleef Periodic Table deposited on a synthetic mordenite carrier prepared by heating a co-gel of aluminium hydroxide on silica hydrogel in an aqueous alkaline solution under its autogenous pressure, the co-gel having a silica/alumina molar ratio in the range 9À5:1 to 12À5:1 and sodium hydroxide being present in an amount in excess of that calculated from the formula of mordenite by an amount of 7-30 mg Na 2 O per gram of water, the total quantity of water present being at least 50 moles/mole Al 2 O 3 . In Example VI, n-pentane is isomerized in the presence of hydrogen and a Pt/mordenite catalyst. |
