Pregled bibliografske jedinice broj: 645098
Positron lifetimes in pores of some low-silica zeolites: influence of water content, crystal size and structural type
Positron lifetimes in pores of some low-silica zeolites: influence of water content, crystal size and structural type // Journal of porous materials, 20 (2013), 5; 1329-1336 doi:10.1007/s10934-013-9718-y (međunarodna recenzija, članak, znanstveni)
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Naslov
Positron lifetimes in pores of some low-silica zeolites: influence of water content, crystal size and structural type
Autori
Bosnar, Sanja ; Bosnar, Damir ; Ren, Nan ; Rajić, Nevenka ; Gržeta, Biserka ; Subotić, Boris
Izvornik
Journal of porous materials (1380-2224) 20
(2013), 5;
1329-1336
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
microporous materials; positron annihilation spectroscopy; thermogravimetric analysis (TGA); microstructure
Sažetak
Positron annihilation lifetime spectroscopy has been used for observation of the free voids in low silica zeolites, of LTA and FAU structure and different crystal size, before and after their heating at different temperatures below 200 °C. Sizes of crystals of the zeolite samples, as well as their structures and water contents, were characterized by X-ray diffraction, scanning electron microscopy, thermogravimetry, and particle size distribution measurements. The number of positron lifetime components as well as their values and intensities, after water removal from the zeolite structure, vary. However, changes are not uniform in all investigated zeolites. The differences are compared and discussed in the dependence of different structure types and crystal sizes of investigated zeolites.
Izvorni jezik
Engleski
Znanstvena područja
Fizika, Kemija
POVEZANOST RADA
Projekti:
098-0982904-2953 - Studij utjecaja svojstava alumosilikatnih prekursora na njihove transformacije (Bronić, Josip, MZOS ) ( CroRIS)
119-1191005-1021 - QCD i jezgre; primjena nuklearnih metoda:materijali,medicina,okoliš (Bosnar, Damir, MZOS ) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus