Abstract
AbstractThe present investigation deals with the surface properties of titania gels prepared from titanous chloride and ammonium carbonate under acidic and alkaline conditions of pH. The dehydration characteristics of such hydrous oxides are also investigated by means of simultaneous differential thermal analysis, thermogravimetric analysis and differential thermogravimetric analysis. Contrary to hydroxide‐precipitated gels, even at a low pH of precipitation, very little ‘coordinated’ water remains in these gels.It is suggested that it is the concomitant presence of ammonium and carbonate ions in the precipitating agent, acting together, that provide the conditions favorable for the development of microporosity and high surface area in the gels.
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