Production process for preparing disodium hydrogen phosphate from EOC method glyphosate mother liquor
A technology of disodium hydrogen phosphate and glyphosate mother liquor, applied in phosphorus compounds, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of easy poisoning and low service life of catalysts, Achieve the effects of increasing yield, reducing degradation cost, improving efficiency and conversion rate
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Embodiment 1
[0027] Mesoporous silica-supported iron was fabricated by the following steps:
[0028] S1. At room temperature, dissolve 2 mmol of sodium lauryl sarcosine in 30 mL of deionized water. After completely dissolving, add 12 mL of hydrochloric acid solution and stir at 400 r / min for 50 min to obtain solution A; 4 mL of tetraethyl orthosilicate and 0.2 Mix mL3-aminopropyltriethoxysilane evenly to obtain solution B; drop solution B into solution A at a rate of 1 drop / second, stir at 400r / min for 15min, then let it settle at room temperature for 24h, and place it at 73°C Set aside to settle, centrifuged, washed twice with deionized water, and dried in vacuo to obtain an intermediate product; 2 g of the intermediate product was dissolved in 20 mL of a mixed solution of ethanol and ethanolamine (volume ratio 3:1), refluxed for 12 h, and centrifuged. Wash the precipitate twice with ethanol, and dry it in vacuum to constant weight to obtain amino mesoporous silica;
[0029] S2. Add 12g ...
Embodiment 2
[0032] Mesoporous silica-supported iron was fabricated by the following steps:
[0033] S1, with step S1 in embodiment 1;
[0034] S2. Add 14g of amino mesoporous silica into 100mL of anhydrous dichloromethane, and ultrasonically disperse for 15 minutes, then add 30g of chlorosulfonic acid, and when no bubbles are generated by ultrasonication, stop ultrasonication, centrifuge, wash with deionized water, and heat at 30°C Vacuum drying to constant weight to obtain sulfonic acid-based mesoporous silica;
[0035] S3. Add 23g of sulfonic acid-based mesoporous silica into 70mL of deionized water, and ultrasonically disperse for 10-20min, then add 3g of ferric chloride, stir at 300r / min for 5h to obtain a mixture, transfer the mixture to a reaction kettle, and Stand at 82°C for 2h, cool to room temperature, centrifuge, vacuum dry, grind, place in a muffle furnace and heat up to 400°C at 5°C / min and bake for 6h to obtain iron supported on mesoporous silica.
Embodiment 3
[0037] S1, with step S1 in embodiment 1;
[0038] S2. Add 16g of amino mesoporous silica into 100mL of anhydrous dichloromethane, and ultrasonically disperse for 20min, then add 32g of chlorosulfonic acid, and when no bubbles are generated by ultrasonication, stop ultrasonication, centrifuge, wash with deionized water, 30°C Vacuum drying to constant weight to obtain sulfonic acid-based mesoporous silica;
[0039]S3. Add 26g of sulfonic acid-based mesoporous silica into 70mL of deionized water, and ultrasonically disperse for 10-20min, then add 3g of ferric sulfate, stir at 300r / min for 5h to obtain a mixture, transfer the mixture to a reaction kettle, and Stand at ℃ for 2 hours, cool to room temperature, centrifuge, vacuum dry, grind, place in a muffle furnace and heat up to 400 ℃ at 5 ℃ / min and bake for 6 hours to obtain iron supported on mesoporous silica.
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