Monitoring the Crystallization Stages of Silicalite by Positron Lifetime Spectroscopy (CROSBI ID 144860)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Kajcsos, Zsolt ; Kosanović, Cleo ; Bosnar, Sanja ; Subotić, Boris ; Major, Peter ; Liszkay, Laszlo ; Bosnar, Damir ; Lázár, Karoly ; Havancsák, Karoly ; Luu, A.T. ; Thanh, N.D
engleski
Monitoring the Crystallization Stages of Silicalite by Positron Lifetime Spectroscopy
In porous media, positron annihilation techniques (PAT) revealed the existence of annihilation modi with long lifetimes connected to structural and extrastructural free volumes acting as trapping centres for o-Ps. Our aim in this work was to study the influence of the synthesis applied for the production of the zeolite framework and the correlation between the trapping pattern and crystallization progress. PAT lifetime (LT) measurements were performed in silicalite-1 samples in various stages of crystallization and a large change was observed in the long components. The results are discussed in connection to the crystallization and the availability of free volume.
zeolites ; free volume ; positronium formation ; crystallization ; gel ageing
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Podaci o izdanju
607
2009.
173-176
objavljeno
0255-5476
1662-9752
10.4028/www.scientific.net/MSF.607.173