AGGLOMERATED ZEOLITE ADSORBING MATERIALS, PROCESS TO MANUFACTURE AND APPLICATION THEREOF

摘要

FIELD: CHEMISTRY. ^ SUBSTANCE: agglomerated zeolite adsorbing materials are suggested. They contain inert bonding agent based on zeolite X with Si/Al ratio within 1.15 < Si/Al <= 1.5 range, with at least 90% of cation exchange centres are occupied by either barium ions only or barium and potassium ions. In the latter case, fraction of exchange centres occupied by potassium may be up to 1/3 of those occupied by barium and potassium. Remaining centres are occupied by alkali or earth metals other than barium. The Dubinin volume of these adsorbing materials measured using nitrogen adsorption at 77° after vacuum degassing for 16 h at 300° is 0.240 cm3/g or more. ^ EFFECT: resulting adsorbing materials are efficient for isolation of p-xylene from mixtures of isomers of aromatic hydrocarbons in liquid or gas phase. ^ 13 cl, 4 ex