Usy and related zeolite catalysts with blocked undesired active sites, and methods for synthesizing the same relying on selective extraction and ion-exchange

Abstract

Provided is a process for extracting organic surfactant occluded in an as-synthesized meso-Y zeolite (ASMY). The process comprises treating the ASMY with methanolic ammonium nitrate (MAN). The length of the treatment can last as long as needed, but equilibrium is generally reached at about 2 hours. The treatment is beneficial in that it does not decrease Al content and it extracts sufficient organic surfactant to be safe for calcination.

Dependencies are inferred from the claim text.