INTERCALATION ABILITY OF HYDROLYZED ALUMINUM SPECIES IN N-ALKYLMOUOAMINE ALPHA-ZIRCONIUM PHOSPHATE-COMPOUNDS

The intercalation of hydrolysed Al species in the n-alkylmonoamine alp ha-zirconium phosphate (alpha-ZrP) structure was performed. A similar synthesis procedure and the same Al solutions as for the preparation o f Al-PILCs (pillared interlayered clays) were used. However, no interc alation of the Al Keggin ion [AlO4Al12(OH)(24)(H2O)(12)](7+) in the al pha-ZrP structure occurred. It was demonstrated that the nature of the intercalated ions depends strongly on the competitive ions present in the Al solution and on the reaction or exchange temperature. We could prove that the lack of the Keggin ion intercalation is due to its ina ccessibility in the interlayer space and not to its decomposition upon intercalation. Alternative synthesis methods using different amine-Zr P intercalates did not promote the Keggin ion intercalation.