The smaller the ionic radius of the alkaline Earth metals, the stronger its incorporation into the vacant T-atom sites, and therefore, the higher the consumption of silanol groups.
The introduction of alkaline Earth metals into the DeAlBeta zeolite decreases the intensity of the bands at 3743, 3714, and 3519 [cm.sup.-1], suggesting that the alkaline Earth metals ions react with silanol groups of vacant T-atom sites.
The incorporation of alkaline Earth metals into DeAlBeta zeolite results in the appearance of the band at 1445-1448 [cm.sup.-1].
This suggests that NiNP has little contribution to the carbonation rate when the dissolution of alkaline earth metals is rate limiting, rather than the C[O.sub.2] solubility or carbonate/bicarbonate ion concentrations.
However, when the solids content increases, the contribution of the extra dissolved C[O.sub.2] diminishes, to the point that at high solids loadings the C[O.sub.2] supply rate and alkaline earth metal dissolution rate become rate limiting.
2.6 Determination of Alkali and Alkaline Earth Metals
by Flame Photometer: The amount of alkali and alkaline earth metals
(Li+, K+, Na+, Ca+2, Ba+2) in the sample extract was determined by Janway PFP-7 Flame Photometer .
Alkali and alkaline earth metals were estimated after element-specific extraction.
Among the alkaline earth metals, Ca showed a gradual decline from the litter layer to the bottom of the profile in all 3 years irrespective of the habitat type (Figs 2c, 3c, 4c).
But he argues that placing helium with the alkaline earth metals
results in a more regularly shaped structure that can take two forms.
Dispute: Magnesium, an alkaline earth metal
, is highly reactive in nature.