engleski

The influence of alkali cations on the structure of zeolite precursor gels investigated by positron lifetime spectroscopy

Positron annihilation lifetime spectroscopy (PALS)is sensitive and proved method for material structure investigation. We used it to investigate the influence of different alkali cations on the structure of zeolite precursors in order to understand better the crystallization mechanism of zeolites. Our previous PALS investigations on Li gels show different structural features obtained for differently prepared gels, indicating the importance of the way on which cations are introduced in the gel matrix. These investigations were now extended to to gels containing K, Rb and Cs cations, in correlation to their ionic radius and the way of preparation.

zeolite gel precursor; alkali cation; positron annihilation

Studies in Surface Science and Catalysis. No. 174B.