| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a porous glass excellent in water resistance and alkali resistance and capable of being industrially mass-produced. SOLUTION: The method for producing the porous glass comprises heat-treating a phase-separated base glass comprising 40 to 60 wt.% SiO<SB>2</SB>, 1 to 10 wt.% ZrO<SB>2</SB>, 15 to 40 wt.% B<SB>2</SB>O<SB>3</SB>, 6 to 15 wt.% Al<SB>2</SB>O<SB>3</SB>, 1 to 20 wt.% Na<SB>2</SB>O, 1 to 10 wt.% K<SB>2</SB>O, and 5 to 30 wt.% CaO at 600 to 800°C and bringing the heat-treated product into contact with an acid solution to elute acid solubles therefrom. COPYRIGHT: (C)2006,JPO&NCIPI
|
