Organic modified layering silicate and preparation method thereof
An organic silicate and silicate technology, which is applied in chemical instruments and methods, dyeing low-molecular organic compound treatment, fibrous fillers, etc., can solve problems such as difficult organic intercalation and difficult expansion of interlayer spacing, and achieve intercalation High efficiency, expanded application range, and increased interlayer spacing
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Embodiment 1
[0026] The dried silicate samples were placed in a resistance furnace for 500 oC Calcined for 0.5h; take an appropriate amount of calcined sample, stir and react in 3mol / L nitric acid solution for 2h to obtain acidified silicate; take an appropriate amount of acidified sample, mix it with 12 parts of lithium nitrate for 200 o C reacted for 8h to obtain lithium-based silicate; add lithium-based layered silicate in water to form a stable suspension; add the acidified organic intercalation agent to the suspension of lithium-based layered silicate at 120 o C under reaction 8h. The resulting aqueous organosilicate solution is purified to obtain an organomodified silicate. The X-ray diffraction (XRD) test results of the obtained organically modified sericite showed that the interlayer distance increased from 1.98 nanometers to 5.3 nanometers.
Embodiment 2
[0028] The dried silicate samples were placed in a resistance furnace for 500 oC Calcined for 0.5h; take an appropriate amount of calcined sample, stir and react in 3mol / L nitric acid solution for 2h to obtain acidified silicate; take an appropriate amount of acidified sample, mix it with 12 parts of lithium nitrate for 200 o C reacted for 8h to obtain lithium-based silicate; add lithium-based layered silicate in water to form a stable suspension; add the acidified organic intercalation agent to the suspension of lithium-based layered silicate at 150 o C under reaction 8h. The resulting aqueous organosilicate solution is purified to obtain an organomodified silicate. The X-ray diffraction (XRD) test results of the obtained organically modified sericite showed that the interlayer distance increased from 1.98 nanometers to 5.52 nanometers.
Embodiment 3
[0030] The dried silicate samples were placed in a resistance furnace for 500 oC Calcined for 0.5h; take an appropriate amount of calcined sample, stir and react in 3mol / L nitric acid solution for 2h to obtain acidified silicate; take an appropriate amount of acidified sample, mix it with 12 parts of lithium nitrate for 200 o C reacted for 8h to obtain lithium-based silicate; add lithium-based layered silicate in water to form a stable suspension; add the acidified organic intercalation agent to the suspension of lithium-based layered silicate at 120 o C under reaction 8h. The resulting aqueous organosilicate solution is purified to obtain an organomodified silicate. The X-ray diffraction (XRD) test results of the obtained organically modified sericite showed that the interlayer distance increased from 1.98 nanometers to 5.54 nanometers.
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