BENTONITE-AMORPHOUS SILICA COMPOSITE
PROBLEM TO BE SOLVED: To provide a bentonite-amorphous silica composite having a new particle structure which cannot be found in well-known smectite hitherto, which is obtained from natural bentonite via the step of changing an SiOcrystal contained in the bentonite into an amorphous state.SOLUTION:...
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Sprache: | eng |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a bentonite-amorphous silica composite having a new particle structure which cannot be found in well-known smectite hitherto, which is obtained from natural bentonite via the step of changing an SiOcrystal contained in the bentonite into an amorphous state.SOLUTION: In this bentonite-amorphous silica composite, the pore volume in a pore diameter of 1.7-100 nm is in the range of 0.40-1.00 cm/g, and the solid acid amount under the condition of H≤-3.0 is in the range of 0.41-0.80 mmol/g, and the zeta potential measured by aqueous dispersion having concentration of 0.002 g/200 mL is in the range of -15 to -35 mV. |
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