Slow-release double-effect pesticide and preparation method thereof
A slow-release, pesticide technology, applied in botany equipment and methods, chemicals for biological control, pesticides, etc., can solve problems such as loss of ability to absorb nutrients, phloem damage, stem distortion, etc., to achieve The preparation method is simple and easy, the co-intercalation structure is stable, and the intercalation structure is stable
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Embodiment 1
[0039] (1) Weigh 17.8g Zn(NO 3 ) 2 ﹒ 6H 2 O, 11.3g Al(NO 3 ) 3 ﹒ 9H 2 O dissolved in 100ml to remove CO 2 Mixed salt solution was prepared with water, another 5.6g NaOH was dissolved in 50ml to remove CO 2 Prepare alkaline solution in water, N at room temperature 2 Protection Use the double-drop method to add the salt solution and the alkali solution into the four-neck flask, and stir vigorously. Adjust the pH value to 7 with 0.1mol / L NaOH solution. The resulting slurry was crystallized at 60°C for 72 hours, and the product was placed in a centrifuge, centrifuged at a speed of 2500 rpm for 5 minutes, and then used to remove CO 2 Wash with water until neutral; take out the sample and dry it at 50°C for 48 hours for characterization, and obtain the hydrotalcite precursor ZnAl-NO 3 -LDHs, whose Zn 2+ / Al 3+ =2.
[0040] (2) 8.6g sodium tetrachloride [CH 3 (Cl)C 6 h 3 OCH 2 COONa] solid dissolved in 200mL to remove CO 2 After the deionized water was transferred ...
Embodiment 2
[0045] (1) Weigh 15.4g Mg(NO 3 ) 2 ﹒ 6H 2 O, 11.3g Al(NO 3 ) 3 ﹒ 9H 2 O dissolved in 100ml to remove CO 2 Mixed salt solution was prepared with water, another 2.0g NaOH was dissolved in 50ml to remove CO 2 Prepare alkaline solution in water, N at room temperature 2 The salt solution and the alkali solution were added into the four-neck flask by the double-drop method, and the pH value was adjusted to 10 with 5mol / L NaOH solution after the dripping. Centrifuge at rpm for 3 min, then remove CO 2 Wash with water until neutral; take out a small amount of samples and dry them at 90°C for 20 hours for characterization to obtain the hydrotalcite precursor MgAl-NO 3 -LDHs, their Mg 2+ / Al 3+ =2.
[0046] (2) 8.6g sodium tetrachloride [CH 3 (Cl)C 6 h 3 OCH 2 COONa] solid dissolved in 200mL to remove CO 2 After the deionized water was transferred to the four-necked bottle, then add the 10g hydrotalcite precursor MgAl-NO 3 -LDHs, N 2 Protected and heated to 50°C, reac...
Embodiment 3
[0051] (1) Weigh 17.4g Ni(NO 3 ) 2 ﹒ 6H 2 O, 11.3g Al(NO 3 ) 3 ﹒ 9H 2 O dissolved in 100ml to remove CO 2 Mixed salt solution was prepared with water, another 5.6g NaOH was dissolved in 50ml to remove CO 2 Prepare alkaline solution in water, N at room temperature 2 Protection Use the double-drop method to add the salt solution and the alkali solution into the four-neck flask, and stir vigorously. Adjust the pH value to 7 with 3.0mol / L NaOH solution. The resulting slurry was crystallized at 80°C for 30 h, and the product was placed in a centrifuge, centrifuged at a speed of 3000 rpm for 4 min, and then used to remove CO 2 Wash with water until neutral; take out the sample and dry it at 50°C for 48 hours for characterization, and obtain the hydrotalcite precursor NiAl-NO 3 -LDHs, whose Ni 2+ / Al 3+ =2.
[0052] (2) 8.6g sodium tetrachloride [CH 3 (Cl)C 6 h 3 OCH 2 COONa] solid dissolved in 200mL to remove CO 2 The deionized water was transferred to a four-neck...
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