Abstract
Composite silica gels containing perchloric acid HClO4, dodecatungstophosphoric acid H3PW12O40⋅29H2O (WPA), or tetra-n-buthylammonium perchlorate (n-Bu)4NClO4 were prepared by the sol-gel method from tetraethoxysilane and each dopant. For all the systems no changes in conductivities were observed during gelation where the transformation from liquid to solid occurred macroscopically. The conductivities of silica gels doped with HClO4 or WPA, the values of which were about 10-2S·cm-1 at room temperature and higher than those of the pure silica gels and (n-Bu)4NClO4-doped silica gels (10-7S·cm-1), did not change in the drying process from wet to dried gels.
