The mechanism of ion exchange in zirconium phosphates. 15. The effect of crystallinity of the exchange on lithium(1+)/hydrogen(1+) exchange of .alpha.-zirconium phosphate
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The effect of the crystallinity of α-zirconium phosphate exchangers upon Li+/H+ exchange reactions was investigated. The most crystalline exchanger formed three exchanged phases of approximate composition ZrLi0.9-1.04H1.1-0.96(PO4) 2·4H2O, ZrLi1.33-1.50H0.67-0.50(PO4) 2·4H2O, and Zr(LiPO4)2·4H2O. As the crystallinity of the exchanger decreases the composition ranges of the exchanged phases broaden until with amorphous exchangers only a single solid solution is obtained. The exchange reaction with the amorphous zirconium phosphate is reversible with KLi/H = 6.2 × 10-5.
author list (cited authors)
Clearfield, A., & Tuhtar, D. A.