Synthesis method of copper pyrithione
A technology for copper pyrithione and a synthesis method, which is applied to chemical instruments and methods, chemical recovery, molecular sieve catalysts, etc., can solve problems such as punching materials, and achieve the effects of simple process operation, reduced production costs, and reduced raw material consumption
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[0045] The preparation and synthesis steps of the catalyst are as follows:
[0046] Dissolve cetyl trimethyl ammonium bromide and sodium silicate in hot water to obtain a clear solution, adjust the pH value to 8~9, and sequentially add the chloride aqueous solution of metal A and the B salt aqueous solution of metal B dropwise To the above solution, adjust the pH to 9.0~9.5, and finally add the citrate aqueous solution of metal C dropwise, after stirring evenly, transfer the obtained mixed sol into an autoclave, and perform a hydrothermal reaction at 120~180 ° C for 24~48h, It was cooled to room temperature naturally, washed with deionized water, then washed with absolute ethanol, and dried at room temperature to obtain the original powder of the catalyst.
[0047] Specific examples of preparing the catalyst are as follows:
Embodiment 1
[0049] Dissolve 25g trimethylhexadecylammonium bromide in 200ml deionized water, keep stirring at 20~60°C for 30 minutes, add 50gNa 2 SiO 3 , stir well, use dilute H 2 SO 4 The pH of the solution was adjusted to 8.5, then 60 ml of an aqueous solution containing 7.5 g of titanium trichloride was added dropwise to the above solution under vigorous stirring, and 220 ml of an aqueous sodium stannate solution containing 30.0 g of sodium stannate trihydrate was added dropwise, and Ammonia water was adjusted to pH 9.0~9.5, and finally 40ml of aqueous solution containing sodium tungstate dihydrate 19.0 was added. The obtained mixed sol was stirred for 2 hours, then transferred to a stainless steel autoclave, and hydrothermally reacted at 120 °C for 24 hours. After the reaction, the mixture was cooled to room temperature with water, and the product was filtered, washed three times with deionized water and anhydrous ethanol, and dried at room temperature. The original catalyst powder...
Embodiment 2
[0051] Dissolve 25g trimethylhexadecylammonium bromide in 200ml deionized water, keep stirring at 20~60°C for 30 minutes, add 50gNa 2 SiO 3 , stir well, use dilute H 2 SO 4 The pH of the solution was adjusted to 8.5, then 40 ml of an aqueous solution containing 5 g of titanium trichloride was added dropwise to the above solution under strong stirring, and 150 ml of an aqueous sodium stannate solution containing 20.0 g of sodium stannate trihydrate was added dropwise, and ammonia water was used. Adjust the pH to 9.0~9.5, and finally add 25 ml of an aqueous solution containing 12.7 sodium tungstate dihydrate. The obtained mixed sol was stirred for 2 hours, then transferred to a stainless steel autoclave, and hydrothermally reacted at 150 °C for 48 hours. After the reaction was completed, the mixture was cooled to room temperature with water, and the product was filtered, washed three times with deionized water and anhydrous ethanol, and dried at room temperature. The original...
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