Hydroxides of low solubility

Figure 10-6 continues this pictorial presentation of solubilities. Figure 10-6A shows the positive ions that form hydroxides of low solubility. Figure 10-6B shows the positive ions that have low solubility when combined with phosphate ion, PO 3, carbonate ion, CO 2, and sulfite ion,... 

Transition metals and other metal ions that have several oxidation states that could be stable in water may participate in at least two different ways in the initial precipitation of Mns04 in aerated water. Metals that form hydroxides of low solubility (for example, Pb(OH)2) can provide a substrate or nucleation site for the Mu304 and thus be incorpo-... 

Unfortunately, Ti(IV) forms hydroxides of low solubility. In order to avoid precipitation during the synthesis of Ti-MFI the admixture of complexing agents like acetylacetone has been studied [73]. Due to the DR spectra acetylacetone admission resulted in a higher amount of framework titanium (212 nm), again in the absence of anatase, and in a distinct reduction of extraframework Ti species, e.g., like octahedrally coordinated titanium (274 nm). 

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