| 摘要 |
PROBLEM TO BE SOLVED: To provide an industrially advantageous manufacturing method of crystalline silico-titanate excellent in adsorption removal property of cesium and strontium even in sea water.SOLUTION: There is provided a manufacturing method of crystalline silico-titanate represented by the general formula:NaTiSiOnHO, where n represents 0 to 8, having a first process of mixing a silicate source, a sodium compound, titanium tetrachloride and water to obtain a mixed gel, a second process of hydrothermal reacting the mixed gel obtained in the first process, where the silicate source, the sodium compound and titanium tetrachloride are added so that a molar ratio of Ti and Si contained in the mixed gel is Ti/Si=1.2 to 1.5 and the molar ratio of NaO and SiOis NaO/SiO=0.7 to 2.5 in the first process.SELECTED DRAWING: None |
