Monitoring the crystallization stages of silicalite by positron lifetime spectroscopy

Zs Kajcsos, C. Kosanovic, S. Bosnar, B. Subotic, P. Major, L. Liszkay, D. Bosnar, K. Lázár, H. Havancsák, A. T. Luu, N. D. Thanh

Research output: Contribution to journalConference article

7 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)173-176
Number of pages4
JournalMaterials Science Forum
Publication statusPublished - Apr 17 2009
Event9th International Workshop on Positron and Positronium Chemistry, PPC-9 - Wuhan, China
Duration: May 11 2008May 15 2008



  • Crystallization
  • Free volume
  • Gel ageing
  • Positronium formation
  • Zeolites

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Kajcsos, Z., Kosanovic, C., Bosnar, S., Subotic, B., Major, P., Liszkay, L., Bosnar, D., Lázár, K., Havancsák, H., Luu, A. T., & Thanh, N. D. (2009). Monitoring the crystallization stages of silicalite by positron lifetime spectroscopy. Materials Science Forum, 607, 173-176.