PREPARATION OF POROUS GLASS-CERAMICS WITH A SKELETON OF NASICON-TYPE COPPER TITANIUM PHOSPHATE CRYSTAL
1996 年 6 巻 p. 341-344
詳細
1996 年 6 巻 p. 341-344
A novel porous glass-ceramic with a skeleton of CuTi2(PO4)3 was prepared by controlled crystallization of a glass with a nominal composition of 50CuO·20TiO2.30P2O5 (in mol%) and subsequent chemical leaching of the resulting dense glass-ceramic consisting of CuTi2(PO4)3 and Cu3(PO4)2 phases with CuO phase at the surface. By leaching the resultant glass-ceramic with dilute H2SO4, Cu3(PO4)2 and CuO thin layer were dissolved out selectively, leaving a crystalline CuTi2(PO4)3 skeleton. The resulting porous glass-ceramic with large specific surface area (=45 m2·g-1) showed some catalytic activities such as conversion of propene into acrolein.
