Nanometer ceanothus bismuth magnesium tablet and preparation method thereof
A nano-bismuth nitrate technology, applied in chemical instruments and methods, bismuth compounds, pharmaceutical formulations, etc., can solve the problems of low bioavailability and slow disintegration
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specific Embodiment 1
[0011] Take 5g of bismuth oxide and 5g of nitric acid and dissolve it in 10ml of ethylene glycol solution to make a salt solution, add the salt solution dropwise to the ammonia solution with a concentration of 0.2mol / l, so that the ratio of the salt solution to the ammonia solution is 1:10, and titrate After stirring for 0.5 hours to obtain a precipitate, the precipitate was repeatedly washed with purified water until the supernatant was neutral, aged for 1 day, and the supernatant was removed to obtain a hydrothermal reaction precursor solution, a hydrothermal reaction precursor The solution concentration is 0.01mol / l, add the precursor solution into the hydrothermal reaction kettle, add 0.03mol / l analytical alcohol solid KOH into the reaction kettle, control the temperature at 150°C, the pressure 1.0Mpa, take it out of the reaction kettle after reacting for 30min The product is washed with purified water to obtain a white crystalline substance, then the white crystalline subs...
specific Embodiment 2
[0012] Take 25g of bismuth oxide and 45g of nitric acid and dissolve it in 30ml of ethylene glycol solution to make a salt solution, add the salt solution dropwise to the ammonia solution with a concentration of 0.6mol / l, so that the ratio of the salt solution to the ammonia solution is 1:20, and titrate After stirring for 1 hour to obtain a precipitate, the precipitate was repeatedly washed with purified water until the supernatant was neutral, aged for 10 days, and the supernatant was removed to obtain a hydrothermal reaction precursor solution, a hydrothermal reaction precursor The solution concentration is 0.05mol / l, add the precursor solution into the hydrothermal reaction kettle, add 0.09mol / l analytical alcohol solid KOH into the reaction kettle, control the temperature at 230°C, the pressure 2.5Mpa, take it out of the reaction kettle after reacting for 150min The product is washed with purified water to obtain a white crystalline substance, then the white crystalline su...
specific Embodiment 3
[0014] Take 15g of bismuth oxide and dissolve 35g of nitric acid in 20ml of ethylene glycol solution to make a salt solution, add the salt solution dropwise to the ammonia solution with a concentration of 0.4mol / l, so that the ratio of the salt solution to the ammonia solution is 1:15, and titrate After stirring for 0.8 hours to obtain a precipitate, the precipitate was repeatedly washed with purified water until the supernatant was neutral, aged for 5 days, and the supernatant was removed to obtain a hydrothermal reaction precursor solution, a hydrothermal reaction precursor The solution concentration is 0.03mol / l, add the precursor solution into the hydrothermal reaction kettle, add 0.06mol / l analytical alcohol solid KOH into the reaction kettle, control the temperature at 180°C, the pressure 1.5Mpa, take it out of the reaction kettle after reacting for 90min The product is washed with purified water to obtain a white crystalline substance, then the white crystalline substanc...
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