"e glass as described in, for example, T. Yazawa, ???Present status and future potential of preparation of porous glass and its application,??? Key Engineering Materials,??? 115 pp. 125-146 (1996). [0122] (d) Solgel or aerogel process in silica, alumina, titania, zirconia and other inorganic-oxides or mixtures thereof. [0123] (e) Zeolite and zeolite-like porous media as described in, for example, Y" . . . . .