Paper Title:
Monitoring the Crystallization Stages of Silicalite by Positron Lifetime Spectroscopy
  Abstract

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.

  Info
Periodical
Edited by
S. J. Wang, Z. Q. Chen, B. Wang and Y. C. Jean
Pages
173-176
DOI
10.4028/www.scientific.net/MSF.607.173
Citation
Z. Kajcsos, C. Kosanovic, S. Bosnar, B. Subotic, P. Major, L. Liszkay, D. Bosnar, K. Lázár, H. Havancsák, A.T. Luu, N.D. Thanh, "Monitoring the Crystallization Stages of Silicalite by Positron Lifetime Spectroscopy", Materials Science Forum, Vol. 607, pp. 173-176, 2009
Online since
November 2008
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$32.00
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