Preparation method of laminar pearl bismuth oxychloride
A bismuth oxychloride and pearlescent technology, applied in chemical instruments and methods, inorganic chemistry, bismuth compounds, etc., to achieve good brightness and broad market prospects
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Embodiment 1
[0015] Heat deionized water to a temperature of 80°C, add bismuth nitrate at a rate of 40 g / L, add concentrated hydrochloric acid with a mass fraction of 37% at a rate of 80 ml / L, stir and dissolve to obtain a bismuth salt solution;
[0016] Heat deionized water to a temperature of 90°C, add buffer ammonium chloride at 1 g / L, add nonionic surfactant polyethylene glycol with a molecular weight of 200 at 0.25 ml / L, and add anionic surface active agent at 0.1 g / L The active agent sodium dodecylbenzenesulfonate is stirred and dissolved, and the pH is adjusted to be less than 2 with hydrochloric acid and ammonia water to obtain a hydrolyzate;
[0017] Control the temperature of the hydrolyzed solution at 85°C, add the bismuth salt solution to the hydrolyzed solution at a volume ratio of 1:5, continue to insulate and stir for 1 hour, remove the supernatant, wash the precipitate with distilled water, and obtain a single-layer flake three-dimensional cross composition after drying The...
Embodiment 2
[0019] Heat deionized water to a temperature of 80°C, add bismuth nitrate at a rate of 60 g / L, add concentrated hydrochloric acid with a mass fraction of 37% at a rate of 100 ml / L, stir and dissolve to obtain a bismuth salt solution;
[0020] Heat deionized water to a temperature of 90°C, add buffer ammonium chloride at 2 g / L, add nonionic surfactant polyethylene glycol with a molecular weight of 300 at 0.5 ml / L, and add anionic surface active agent at 0.2 g / L The active agent sodium dodecylbenzenesulfonate is stirred and dissolved, and the pH is adjusted to be less than 2 with hydrochloric acid and ammonia water to obtain a hydrolyzate;
[0021] Control the temperature of the hydrolyzed solution at 95°C, add the bismuth salt solution to the hydrolyzed solution at a volume ratio of 1:10, continue to insulate and stir for 1 hour, remove the supernatant, wash the precipitate with distilled water, and obtain a single-layer flake three-dimensional cross composition after drying Th...
Embodiment 3
[0023] Heat deionized water to a temperature of 80°C, add bismuth nitrate at 50 g / L, add concentrated hydrochloric acid with a mass fraction of 37% at 90 ml / L, stir and dissolve to obtain a bismuth salt solution;
[0024] Heat deionized water to a temperature of 90°C, add buffer ammonium chloride at 1.5 g / L, add nonionic surfactant polyethylene glycol with a molecular weight of 400 at 0.4 ml / L, and add anion at 0.15 g / L Surfactant sodium dodecylbenzene sulfonate is stirred and dissolved, and the pH is adjusted to be less than 2 with hydrochloric acid and ammonia water to obtain a hydrolyzate;
[0025] Control the temperature of the hydrolyzate at 90°C, add the bismuth salt solution to the hydrolyzate at a volume ratio of 1:7, continue to insulate and stir for 1 hour, remove the supernatant, wash the precipitate with distilled water, and obtain a single-layer flake three-dimensional cross composition after drying The pearlescent bismuth oxychloride with a honeycomb structure ha...
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