Pregled bibliografske jedinice broj: 217191
Synthesis of γ - and β - eucryptite obtained by thermal transformation of LiA(BW), Li-exchanged zeolite A and of Li-exchanged amorphous aluminosilicate gel.
Synthesis of γ - and β - eucryptite obtained by thermal transformation of LiA(BW), Li-exchanged zeolite A and of Li-exchanged amorphous aluminosilicate gel. // Fourteenth Croatian-Slovenian Crystallographic Meeting - Book of Abstarcts / Cetina, Mario ; Popović, Stanko ; Štefanić, Zoran ; Višnjevac Aleksandar (ur.).
Zagreb: Hrvatska akademija znanosti i umjetnosti (HAZU), 2005. str. 14-17 (predavanje, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 217191 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Synthesis of γ - and β - eucryptite obtained by thermal transformation of LiA(BW), Li-exchanged zeolite A and of Li-exchanged amorphous aluminosilicate gel.
Autori
Kosanović, Cleo ; Bosnar, Sanja ; Subotić, Boris ; Kaučič, Vjenčeslav ; Novak Tušar, Nataša ; Gabrovšek, Roman ; Ristić, Alenka
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Fourteenth Croatian-Slovenian Crystallographic Meeting - Book of Abstarcts
/ Cetina, Mario ; Popović, Stanko ; Štefanić, Zoran ; Višnjevac Aleksandar - Zagreb : Hrvatska akademija znanosti i umjetnosti (HAZU), 2005, 14-17
Skup
Fourteenth Croatian-Slovenian Crystallographic Meeting
Mjesto i datum
Vrsar, Hrvatska, 15.06.2005. - 17.06.2005
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Sinteza; Eukriptit; LiA(BW); Termička transformacija; Li-zamijenjen zeolit A; Li-zamijenjen amorfni alumosilikatni gel
(Synthesis; Eucryptite; LiA(BW); Thermal transformation of; Li-exchanged zeolite A; Li-exchanged amorphous aluminosilicate gel)
Sažetak
Zeolites are promising precursors to aluminosilicate-based ceramics because they are readily synthesized with a narrow particle size distribution and can be obtained at low cost. Thermal transformations of Li-exchanged amorphous aluminosilicate gel, LiA(BW) and Li-exchanged zeolite A.have been studied using combined information from differential scanning calorimetry (DSC), differential thermal gravimetry (DTG), X-ray powder difractometry, FTIR-spectroscopy, scanning electron microscopy (SEM) and energy depressive X-ray spectroscopy (EDXS). Each starting material is following different path way of the process. Zeolite LiA(BW) is tansformed to γ - -eucryptite at lower temperatures (<800oC) and then to β - eucryptite after heating at higher temperatures (>800oC) Li-exchanged zeolite A is first transformed to an amorphous phase and then to β - eucryptite at temperatures higher than 1000oC. Direct transformation from the Li-gel is forming β - eucryptite depending on the ratio of the succefully exchanged cation and the molar ratio SiO2/Al2O3 in the gel.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Ustanove:
Institut "Ruđer Bošković", Zagreb
