方沸石晶核作用之動力學研究
Date Issued
1999
Date
1999
Author(s)
羅煥記
DOI
882116M002021
Abstract
Synthetic glass ( NaAlSi2 O6 )
was used as the starting material to
take a kinetic study on the
nucleation of analcime in the
presence of NaOH solutions. The
experiments have been carried out
under the conditions of 0.75 M,
0.5 M and 0.25 M NaOH solutions;
solid/liquid ratios of 1/60 and 1/80;
150 ℃, 180 ℃ and 210 ℃; and
vapor pressures.
Experimental results show
that the amount of nuclei versus
time plots manifest a normal
distribution curve. The
concentration of dissolved glass in
the solution increases with time
until it attains the maximum where
the amount of analcime nuclei
reaches its maximum as well.
Under high dissolution conditions,
the solution concentration will
attain its maximum when the
dissolution is near complete, and
nucleation will occur no more
when the solution concentration
drops to a steady state. To the
contrary, the solution
concentration will attain its
maximum before complete
dissolution, and nucleation will
not happen any more when the
solution concentration drops to
steady state at complete
dissolution under slow dissolution
conditions.
Publisher
臺北市：國立臺灣大學地質科學系暨研究所
Type
report
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