Browsing by Author "Selim, S."
Ragai, J.; Selim, S.; Sing, K. S. W.; Theocharis, Charis R. (1993)Nitrogen adsorption studies were carried out on zirconia gels prepared through the agency of ammonium carbonate to zirconyl chloride solutions. The effect of heat treatment and cation uptake on the textural characteristics ...
Ragai, J.; Selim, S.; Sing, K. S. W.; Theocharis, Charis R. (1994)Microporous zirconia gels were prepared from zirconyl chloride by the reaction in aqueous solutions with either ammonium carbonate or bircarbonate. Under conditions of low pH the ammonium bicarbonate precipitated gels ...