ZEOLITE CATALYST WITH ENHANCED CATALYTIC ACTIVITY AND METHOD OF PREPARATION AND USE THEREOF

摘要

ZEOLITE CATALYST WITH ENHANCED CATALYTIC ACTIVITY AND METHOD OF PREPARATION AND USE THEREOF A treated zeolite, a process for its preparation and its catalytic use are disclosed. The zeolite is characterized by a silica to alumina mole ratio of at least 12 and preferably has a Constraint Index of 1 to 12. The zeolite undergoes controlled aluminum extraction by treatment with an aluminum extracting reagent such as a strong mineral acid or a chelating agent. Removal of aluminum from the zeolite in this manner can increase the acid activity of the zeolite.