| 摘要 |
<p>1343912 Reforming naphtha CHEVRON RESEARCH CO 19 April 1971 [18 Feb 1970 8 May 1970 11 Jan 1971] 23459/71 Heading C5E High-octane gasoline is produced by contacting a naphtha feed in the presence of hydrogen with a catalytic composition comprising a porous inorganic oxide and specified amounts of platinum, tin and halogen at a pressure no more than 300 p.s.i.g. At intervals not more than 2000 hours, the contacting is discontinued, the composition is regenerated, and the contacting is then resumed. The preferred inorganic oxide is alumina, but many others are named, and the catalyst may also contain rhenium. The regeneration may be by contact with an inert gas containing a small proportion of oxygen at high temperature. After regeneration, the catalyst may be reduced with a dry hydrogen-containing gas, and activated with a gas containing oxygen and a halogenating agent, e.g. CHCl 3 , CCl 4 , C 2 Cl 4 or t-butyl chloride. The reforming may be carried out in a series of reaction zones, each of which can be isolated for regeneration without interrupting the reaction in the others.</p> |
