Croatica Chemica Acta, Vol. 79 No. 2, 2006.
Original scientific paper
Synthesis of Forsterite Powder from Zeolite Precursors
Cleo Kosanović
Nada Stubičar
Nenad Tomašić
Vladimir Bermanec
Mirko Stubičar
Hrvoje Ivanković
Abstract
Powder mixtures of NH4-exchanged zeolite A and MgO, and of NH4-exchanged mordenite and MgO were used as starting materials in the synthesis of crystalline ceramic materials. Conventional ball milling was applied in order to amorphize NH4-exchanged zeolites, reduce the particle size of MgO, and produce a homogeneous mixture. Solid-state transformation of the mixtures after heating at the temperature of their phase transformations in the interval 800 °C–1000 °C for 3 hours yielded crystalline forsterite (Mg2SiO4) with possible minor amounts of sapphirine (Mg4Al10Si2O23) in the first case, and to crystalline forsterite (Mg2SiO4) with traces of enstatite (MgSiO3) in the second case.
Keywords
ceramics; forsterite; zeolite precursor; high energy ball-milling; solid state transformation
Hrčak ID:
4149
URI
Publication date:
19.7.2006.
Visits: 2.162 *