Pregled bibliografske jedinice broj: 367426
Novel Synthesis of Pure Leucite from an Aluminosolicate Precursor
Novel Synthesis of Pure Leucite from an Aluminosolicate Precursor // Book of Abstracts and Programme of the Seventeenth Slovenian-Croatian Crystallographic Meeting / Pevec, Andrej ; Leban, Ivan (ur.).
Ljubljana: Chair of Inorganic Chemistry, Faculty of Chemistry and Chemical Technology, 2008. str. 47-47 (predavanje, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 367426 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Novel Synthesis of Pure Leucite from an Aluminosolicate Precursor
Autori
Buljan, Iva ; Kosanović, Cleo ; Bosnar, Sanja ; Subotić, Boris ; Novak Tušar, Nataša ; Ristić, Alenka, Gabrovšek, Roman ; Kaučič, Venčeslav
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Book of Abstracts and Programme of the Seventeenth Slovenian-Croatian Crystallographic Meeting
/ Pevec, Andrej ; Leban, Ivan - Ljubljana : Chair of Inorganic Chemistry, Faculty of Chemistry and Chemical Technology, 2008, 47-47
Skup
Seventeenth Slovenian-Croatian Crystallographic Meeting
Mjesto i datum
Ptuj, Slovenija, 19.06.2008. - 22.06.2008
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
synthesis; leucite; aluminosilicate precursor; thermal treatment
Sažetak
X-ray amorphous K-aluminosilicate gel (x1Na2O, x2K2O)• Al2O3• ySiO2• zH2O) was prepared by the exchange of the original (sodium) ions from Na-aluminosilicate with silicate and aluminate solutions in the ratio of Si/Al~1 . The thermal treatment of K-exchanged aluminosilicate was carried out by isothermal heating for 3 h at the temperature that corresponded to the temperature of the exothermal peak in DSC curve of the sample. The starting material and the product of the solid-state, high-temperature transformation were analyzed/characterized by different methods such as X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), differential thermal analysis (DTA), differential scanning calorimetry (DSC), infrared spectroscopy (FT-IR) and nitrogen absorption (BET method). Thermal treatment of the gel (isothermal heating at 1423 K for 3 h) resulted in its transformation into a crystalline aluminosilicate phase having chemical composition of KAlSi2O6. The transformation was accompanied by a drastic decrease in BET specific surface area caused by the transition of (micro/meso)-porous amorphous K-aluminosilicate into a more dense, non-porous crystalline phase of tetragonal leucite.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Projekti:
098-0982904-2953 - Studij utjecaja svojstava alumosilikatnih prekursora na njihove transformacije (Bronić, Josip, MZOS ) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb
