| Relative Reactivities of Precursors in the Synthesis
of Forsterite, Mg2Si04 |
Ar.fiTAVA MAJUMDAR AND DIBYENDU GANGULI
Pages : 227-229
DOI : 10.1080/0371750X.1995.10804729 |
| Abstract |
| Three precursors of equivalent oxide composition 2Mg0.
Si02, viz. (i) a colloidal gel (partially crystalline) prepared
from magnesium nitrate hexahydrate and a colloidal silica
sol, (ii) a colloidal gel (partially crystalline) prepared from
magnesium chloride n-hydrate and the same colloidal silica
sol and (iii) a mechanical mixture of quartz and MgO were
used for examining their relative reactivities in the formation
of forsterite, Mg2Si04 • The samples were heat treated
at temperatures in the runge 1000°-l400°C with soaking
periods of less than 1 hr to 110 hours. X-ray analyses
showed the nitrate-derived gel to be the most reactive, followed
by the chloride-derived gel; the crystalline oxide
mixture showed sluggish reaction. |
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