Organic modified zeolite used for porous medium sieve shore protection and its preparation method
A technology for modifying zeolite and porous media, applied in chemical instruments and methods, crystalline aluminosilicate zeolite, inorganic chemistry, etc. Problems such as poor adsorption and removal effect, to achieve the effect of improving the ability to remove organic matter
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Embodiment 1
[0015] (1) Weigh a certain amount of zeolite with a particle size of 1.2 mm and place it in a reactor, wash it with distilled water, add 10 g / L NaCl solution, adjust the pH value of the solution to 3, and place it in a constant temperature oscillator. At a temperature of 25°C, shake at a constant temperature for 12 hours and then pour out the supernatant; wash with distilled water and dry at 105°C for later use.
[0016] (2) Take by weighing HDTMA and sodium zeolite equal to the external surface cation exchange capacity of 50% sodium zeolite in the reactor, add a certain amount of deionized water, after stirring for 8 hours, wash with deionized water and then dry naturally, thus obtaining HDTMA organically modified zeolite.
Embodiment 2
[0018] (1) Weigh a certain amount of zeolite with a particle size of 6 cm and place it in a reactor, wash it with distilled water, add 30 g / L of NaCl solution, adjust the pH value of the solution to 5, and place it in a stirring tank; at a temperature of 25 ° C, stir After 12 hours, pour out the supernatant; wash with distilled water and dry at 105°C for later use.
[0019] (3) Weigh HDTMA and sodium zeolite equal to the cation exchange capacity of the outer surface of 50% sodium zeolite in the reactor, add a certain amount of deionized water, stir for 8 hours, wash with deionized water and then air dry naturally to obtain HDTMA Organically modified zeolites.
Embodiment 3
[0021] (1) Weigh a certain amount of zeolite with a particle size of 0.2 cm and place it in a reactor, wash it with distilled water, add 30 g / L of NaCl solution, adjust the pH value of the solution to 7, and place it in a constant temperature oscillator; at a temperature of 25 ° C , after shaking for 12 h, decant the supernatant. After washing with distilled water, dry at 105°C.
[0022] (2) Weighing HDTMA and sodium zeolite equal to the cation exchange capacity of the outer surface of 50% sodium zeolite in the reactor, adding a certain amount of deionized water, stirring for 12 hours, washing with deionized water and then air-drying naturally to obtain HDTMA Organically modified zeolites.
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