FIELD: chemistry.
SUBSTANCE: composition of basic alkali-borosilicate glass includes Fe2O3 and FeO in amount of 20 wt % with respect to Fe2O3. The glass is heat-treated at 550°C for 130-150 hours. After heat treatment, the biphase alkali-borosilicate glass is held in a 3 M solution of inorganic acids at 50-100÷C and washed in distilled water, followed by combined drying in air at 20-120°C. The glass has pore volume of 0.2-0.6 cm3/cm3.
EFFECT: obtaining porous glass in the form of solid articles with thickness of 0,1-2 mm with crystallite size of 5-20 nm.
4 cl, 7 dwg, 1 tbl
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