Reversible occlusion of CO in Cs-impregnated X and Y zeolites

Abstract

Cs₂O in the supercages of Cs-impregnated X and Y zeolites attacks the siliceous portions of the lattice (siloxane bridges), with formation of (Si–O^–Cs⁺)₂ groups which allow the occlusion (reversible at high temperature) of CO in the sodalite units, as indicated by the formation of an IR band at 2150 cm^–1.

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