Porous kalsilite and preparation method thereof
A technology for potassium nepheline and palygorskite, which is applied in the field of porous hexagonal potassium nepheline and its preparation, and achieves the effect of enhancing application efficiency and facilitating diffusion
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[0014] One aspect of the present invention provides a method for preparing hexagonal nepheline, including the following steps:
[0015] S1. Take palygorskite and place it in hydrochloric acid for activation for 2-12 hours, then wash it with pure water, dry, and grind to obtain substance A for use;
[0016] Preferably, in step S1, 1 to 2 g of palygorskite is added to every 10 ml of water;
[0017] Preferably, in step S1, the particle size of palygorskite selected is not less than 200 mesh;
[0018] Preferably, in step S1, the concentration of the hydrochloric acid is 6-8 mol / L;
[0019] S2. Add 2~3g aluminum nitrate per 20ml of water. After stirring evenly, add potassium hydroxide or a mixture of potassium hydroxide and sodium hydroxide to make the solution OH - The concentration is 10-12 mol / L, and the mixture is stirred evenly at room temperature to obtain solution B, and then 1 to 1.5 g of substance A is put into solution B, and stirred evenly to obtain substance C for use;
[0020] Pr...
Example Embodiment
[0026] Example one
[0027] S1. Take 10g of palygorskite with a particle size of 200 mesh and place it in 100mL hydrochloric acid with a concentration of 6mol / L to activate for 12h, and then wash it with deionized water until there is no chloride ion, dry at 60°C, and grind to obtain substance A for use;
[0028] S2. Dissolve 2g of aluminum nitrate in 20ml of water. After stirring, add 5.6g of potassium hydroxide and stir evenly at room temperature to obtain solution B. Then take 1g of substance A and put it into solution B, stir evenly to obtain substance C spare;
[0029] S3. Put the obtained substance C into a hydrothermal reaction kettle, react at 160℃ for 72h, cool to room temperature, centrifuge at 4000 rpm, wash with pure water, and dry at 60℃ to obtain porous hexagonal potassium nepheline .
Example Embodiment
[0030] Example two
[0031] S1. Take 30g of palygorskite with a particle size of 300 mesh and place it in 150mL of hydrochloric acid with a concentration of 8mol / L to activate it for 10 hours, then wash it with deionized water until there is no chloride ion, dry at 60℃, and grind to obtain substance A for use;
[0032] S2. Dissolve 3g of aluminum nitrate in 20mL of water, stir well, add 2.8g of potassium hydroxide, 2g of sodium hydroxide, and stir evenly at room temperature to obtain solution B, then take 1.1g of substance A and put it into solution B, Stir evenly to obtain substance C for use;
[0033] S3. Put the obtained substance C into a hydrothermal reactor, react at 160℃ for 12h, cool to room temperature, centrifuge at 4000 rpm, wash with pure water, and dry at 60℃ to obtain porous hexagonal potassium nepheline .
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