Preparation method and application of pseudo-boehmite microspheres
A technique of pseudo-boehmite and microspheres is applied in the field of preparation of pseudo-boehmite microspheres and achieves the effects of mild hydrothermal conditions, excellent adsorption performance and simple preparation method
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Embodiment 1
[0059] At room temperature, 1.67g (0.0025mol) of Al 2 (SO 4 ) 3 18H 2 O and 2.31 mL (0.03 mol) of N,N-dimethylformamide were added to distilled water to form a 70 mL solution. Then, the solution was transferred to a 100 mL hydrothermal kettle lined with polytetrafluoroethylene, and reacted at 180° C. for 140 min to obtain a hydrothermal product. The hydrothermal product was naturally cooled to room temperature and then separated. After the precipitate was washed three times with distilled water and anhydrous ethanol for three times, the resulting white filter cake was vacuum-dried at 60°C for 12 hours to obtain a fluffy white powder. The XRD pattern analysis confirmed that the product was pseudo-boehmite. The XRD pattern of the product obtained in this example can be seen in the attached figure 1 , the scanning electron microscope (SEM image) can be seen in the attached image 3 . this invention Figure 3-11 The SEM images show the microscopic morphology of the product...
Embodiment 2
[0062] At room temperature, 1.67g (0.0025mol) of Al 2 (SO 4 ) 3 18H 2 O and 2.31 mL (0.03 mol) of N,N-dimethylformamide were added to distilled water to form a 70 mL solution. Then, the solution was transferred to a 100 mL hydrothermal kettle lined with polytetrafluoroethylene, and reacted at 160° C. for 360 min to obtain a hydrothermal product. The hydrothermal product was naturally cooled to room temperature and then separated. After the precipitate was washed three times with distilled water and anhydrous ethanol for three times, the resulting white filter cake was vacuum-dried at 60°C for 12 hours to obtain a fluffy white powder. The XRD pattern analysis confirmed that the product was pseudo-boehmite. The XRD pattern of the product obtained in this example can be seen in the attached figure 1 , the scanning electron microscope (SEM image) can be seen in the attached Figure 4 . From Figure 4 It can be seen that the sample is mainly characterized by solid microsphe...
Embodiment 3
[0065] At room temperature, 1.67g (0.0025mol) of Al 2 (SO 4 ) 3 18H 2 O and 1.8 mL (0.03 mol) of N-methylformamide were added to distilled water to form a 70 mL solution. Then, the solution was transferred to a 100 mL hydrothermal kettle lined with polytetrafluoroethylene, and reacted at 180° C. for 180 min to obtain a hydrothermal product. The hydrothermal product was naturally cooled to room temperature and then separated. After the precipitate was washed three times with distilled water and anhydrous ethanol for three times, the resulting white filter cake was vacuum-dried at 60°C for 12 hours to obtain a fluffy white powder. After XRD pattern analysis, it was confirmed that the product was pseudo-boehmite. The XRD pattern of the product obtained in this example can be seen in the attached figure 1 , the scanning electron microscope (SEM image) can be seen in the attached Figure 5 . From Figure 5 It can be seen that the sample is a core-shell structure particle wi...
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