01985nas a2200205   4500008004100000022001400041245015400055210006900209260007300278300001000351490000800361520116700369653001701536653002001553653002501573653001501598653001201613100002701625856012701652       2010                        eng d  a1387-181100aTransformation of chemically fine tuned zeolite A precursor into dense lithium aluminosilicates - a comprehensive phase evolution and sintering study0 aTransformation of chemically fine tuned zeolite A precursor into  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcNOV  a82-890 v1353 a<p>Beyond their conventional revelation as catalysts, zeolites are being perceived as more challenging materials for modern applications. Thermal recrystallization of zeolite precursors is an efficient method for the preparation of dense aluminosilicate ceramics. However, factors viz., nature of the precursor and the way of firing it etc., influence the product quality. The present report is a systematic and detailed account of a phase transformation of Li modified zeolite A precursor using powder X-ray diffraction (PXRD), thermogravimetry (TG), differential thermal analysis (DTA), scanning electron micrographs (SEM), atomic absorption spectroscopy (MS), energy dispersive X-ray (EDX) and density measurement techniques. It involves an amorphisation followed by a recrystallization into lithium aluminosilicate (LAS). A comprehensive correlation of PXRD, TG/DTA, SEM, EDX and density data explains the complexity of high temperature phase transition (25-1200 degrees C). A qualitative phase analysis revealed the mediation of formation of LAS ceramic, beta-spodumene by few satellite transitions of SiO(2). (C) 2010 Elsevier Inc. All rights reserved.</p>10aLAS silicate10aPhase evolution10aPhase transformation10aPowder XRD10azeolite1 aSelvaraj, Kaliaperumal  uhttps://library.ncl.res.in/content/transformation-chemically-fine-tuned-zeolite-precursor-dense-lithium-aluminosilicates-0