Pregled bibliografske jedinice broj: 367231
Monitoring the Crystallization Stages of Silicalite by Positron Lifetime Spectroscopy
Monitoring the Crystallization Stages of Silicalite by Positron Lifetime Spectroscopy // Materials science forum, 607 (2009), 173-176 doi:10.4028/www.scientific.net/MSF.607.173 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 367231 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Monitoring the Crystallization Stages of Silicalite by Positron Lifetime Spectroscopy
Autori
Kajcsos, Zsolt ; Kosanović, Cleo ; Bosnar, Sanja ; Subotić, Boris ; Major, Peter ; Liszkay, Laszlo ; Bosnar, Damir ; Lázár, Karoly ; Havancsák, Karoly ; Luu, A.T. ; Thanh, N.D
Izvornik
Materials science forum (0255-5476) 607
(2009);
173-176
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
zeolites ; free volume ; positronium formation ; crystallization ; gel ageing
Sažetak
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.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Projekti:
MZOS-098-0982904-2953 - Studij utjecaja svojstava alumosilikatnih prekursora na njihove transformacije (Bronić, Josip, MZOS ) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Scopus
