METHOD FOR THE REGENERATION OF ZEOLITE CATALYSTS

摘要

The method shall find application for the regeneration of zeolite alkylated or transalkylated catalyst, partially used and subjected to heat treatment with aromatic hydrocarbon. By the method the regenerated used zeolite catalysts are extracted in the production of monoalkylated aromatic hydrocarbons by the alkylation of aromatic hydrocarbon substrate with alkylation agent selected from C2-C4 olefines, isopropanol and mixtures of isopropanol and propylene, or by transalkylation of aromatic hydrocarbon substrate by one or more polyalkylaromatic hydrocarbons. The alkyltio or transalkylation methods are conducted in at least partially liquid phase, and in the presence of a zeolite-type catalyst. 35 claims