Crystallographic study of the reaction of zinc vapor with fully Cd(sub 2+) exchanged zeolite X. Complete reduction of Cd (sub 2+) by Zn, extraction of Si)4(super 4-) and AiO4(super 5-) from the zeolite framework, and reduction of Si(super4+) to Si

The reduction of all Cd(super 2+)ions by Zn vapor at 480 degree C , and some Si(super 4+)ions, in a single crystal of fully dehydrated fully Cod(super 2+) exchanged elite X (Cd46Si100Ai92O384 per unit cell) is investigated. The approximate unit-cell composition of the product crystal is found to be Zn64Si96Ai96O384.7SiO4(super 4-),1AiO4(super 5-) (a0=24.713(3) angstrom).