| 摘要 |
PURPOSE:To prepare alkylated phenols in high yield, by the reaction of olefins and phenols using a catalyst comprising a Ti oxide and a W oxide. CONSTITUTION:Alkylphenols are prepared by the reaction of olefins and phenols in the presence of a catalyst comprising a Ti oxide and a W oxide. Preferably, the catalyst has a weight ratio of a Ti oxide to a W oxide of 40/60-99/1 and comprises, in an example, titanium dioxide and tungsten trioxide. Since the catalyst is especially active to isoolefins, isoolefins can be reacted selectively from a mixture containing isoolefins. For example, isobutylene is exclusively reacted when spent fraction is used. EFFECT:The ratio of an o-alkylated compound and a nucleus-alkylated compound can be controlled by controlling the catalyst composition and reaction conditions. |
