IMPROVED PROCESS FOR ALKYLATION OF ALKANES WITH C3 TO C5 ALKENES USING A SOLID ACID CATALYST

摘要

Although olefins commonly are used to alkylate alkanes using various solidacid catalysts, theprocess is severely hampered by short catalyst lifetimes attending substantialolefin oligomerization.This problem is avoided by using an alkyl halide as the alkylating agent.Thus, alkylation of isobutaneby olefin in the presence of a modified, AlCl3-type Friedel-Crafts catalyst at30°C falls to about 77% infour hours, whereas alkylation with sec-butyl chloride at the same conditionsfell to 88% over 30hours.