Method for preparing hydrotalcite by adopting brucite
A brucite and hydrotalcite technology, which is applied in the direction of alumina/aluminum hydroxide, can solve the problems of increasing the complexity of the process, taking a long time, and the process is cumbersome, so as to improve the utilization value, reduce the production cost, and reduce the source of raw materials. wide range of effects
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Embodiment 1
[0034] Select 4.2g brucite and 1.8gAl(OH) 3 , mix it evenly with zirconia balls with a ratio of Φ10mm: Φ6mm=50:120, the mass ratio of balls to materials is 50:1, put them into a 250mL zirconia ball mill jar, and mill at a speed of 200r in a planetary ball mill / min, ball mill for 6h, add 2mL of deionized water, continue to mill at a speed of 200r / min, ball mill for 6h, take out the material and put it into a 500mL beaker, pour 200mL of 0.1mol / L Na 2 CO 3 The solution was stirred in a water bath at 80°C for 1 hour at a stirring speed of 500r / min, washed in a centrifuge at a speed of 1500r / min, and dried at 80°C to obtain hydrotalcite;
[0035] The XRD, FTIR and TG-DSC curves of the product are as follows Figure 1~3 As shown, the FTIR figure shows that the product has hydroxyl and CO 32- , 3472.90cm -1 It is the vibration absorption peak of hydroxyl group (laminate), 1372.90cm -1 for CO 3 2- (interlayer) vibration absorption peak, 453.27.cm -1 It is the characteristic a...
Embodiment 2
[0037] Select 4.2g brucite and 1.8gAl(OH) 3 , mix it evenly with zirconia balls with a ratio of Φ10mm: Φ6mm=50:120, the mass ratio of balls to materials is 50:1, put them into a 250mL zirconia ball mill jar, and mill at a speed of 100r in a planetary ball mill / min, ball mill for 6h, add 2mL of deionized water, continue to mill at a speed of 100r / min, ball mill for 2h, take out the material and put it into a 500mL beaker, pour 200mL of 0.1mol / L Na 2 CO 3 The solution was stirred in a water bath at 80°C for 1 hour at a stirring speed of 500r / min, washed in a centrifuge at a speed of 1500r / min, and dried at 80°C to obtain hydrotalcite.
Embodiment 3
[0039] Choose 3.6g brucite and 2.4gAl(OH) 3 , mix it evenly with zirconia balls with a ratio of Φ10mm: Φ6mm=50:120, the mass ratio of balls to materials is 50:1, put them into a 250mL zirconia ball mill jar, and mill at a speed of 250r in a planetary ball mill / min, ball mill for 4h, add 3mL of deionized water, continue to mill at a speed of 250r / min, ball mill for 2h, take out the material and put it into a 500mL beaker, pour 200mL of 0.05mol / L Na 2 CO 3 The solution was stirred in a water bath at 80°C for 1 hour at a stirring speed of 500r / min, washed in a centrifuge at a speed of 1500r / min, and dried at 80°C to obtain hydrotalcite.
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