PROCESS FOR THE PREPARATION OF MODIFIED ZEOLITES

摘要

PROCESS FOR THE PREPARATION OF MODIFIED ZEOLITES Process for the preparation of a modified zeolite by treatment with a solution of one or more metal salts and a calcination which comprises treating a zeolite having an alkali oxide/aluminium oxide molar ratio between 0.13 and I with a solution of a salt of a multi-valent metal-ion having an atomic number of from 12 to 83 and converting the thus treated zeolite by calcination into a product having a unit cell size between 24.21 and 24.60 A.