Preparation method and adsorption performance of 4A molecular sieve composite material
A composite material and molecular sieve technology, which is applied in the field of preparation of graphene oxide 4A molecular sieve composite materials, can solve few problems such as compounding, and achieve the effects of low cost, simple preparation process and remarkable adsorption effect
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example 1
[0024] The preparation of graphene oxide: get 1--3g natural flake graphite and join in the concentrated sulfuric acid solution of 200-325ml (mass fraction is 98%) and the sodium nitrate of 1.5g is put into beaker, constantly stir while ice bath, Slowly add 4g of potassium permanganate powder (200 mesh) to the mixed solution, keep stirring the mixed solution for 3h, raise the temperature to 35°C and continue stirring for 2h, add deionized water at 1-3 drops / s, and keep the temperature at 98°C , stirred for 15 minutes, cooled to room temperature naturally, added 200mL deionized water and 20mL hydrogen peroxide to terminate the reaction, centrifuged to precipitate, washed repeatedly with deionized water until the pH was 7, and graphene oxide was obtained. Pretreatment of 4A molecular sieve: Grind spherical 4A molecular sieve and pass through a 200-mesh sieve to obtain powdery molecular sieve, add a certain amount of analytically pure hydrochloric acid and deionized water, centrifu...
example 2
[0028] Preparation of Graphene Oxide: Take 1--3g of natural flake graphite and add it to 200--325ml of concentrated sulfuric acid solution (mass fraction is 98%) and put 1.5g of sodium nitrate into a beaker, and keep stirring while in an ice bath , slowly add 4g of potassium permanganate powder (200 mesh) to the mixed solution, keep stirring the mixed solution for 3h, raise the temperature to 35°C and continue stirring for 2h, add deionized water at 1--3 drops / s, keep the temperature at 98 ℃, stirred for 15 minutes, cooled to room temperature naturally, added 200mL deionized water and 20mL hydrogen peroxide to terminate the reaction, centrifuged to precipitate, washed repeatedly with deionized water until the pH was 7, and graphene oxide was obtained. Pretreatment of 4A molecular sieve: Grind spherical 4A molecular sieve and pass through a 200-mesh sieve to obtain powdery molecular sieve, add a certain amount of analytically pure hydrochloric acid and deionized water, centrifug...
example 3
[0032] The preparation of graphene oxide: get 1-3g natural flake graphite and join in the concentrated sulfuric acid solution of 200-325ml (mass fraction is 98%) and put into the beaker with the sodium nitrate of 1.5g, constantly stir while ice bath, to Slowly add 4g of potassium permanganate powder (200 mesh) to the mixed solution, keep stirring the mixed solution for 3h, raise the temperature to 35°C and continue stirring for 2h, add deionized water at 1-3 drops / s, keep the temperature at 98°C, Stir for 15 minutes, cool to room temperature naturally, add 200mL deionized water and 20mL hydrogen peroxide to terminate the reaction, centrifuge to precipitate, wash with deionized water repeatedly until the pH is 7, and obtain graphene oxide. Pretreatment of 4A molecular sieve: spherical 4A molecular sieve, ground, and passed through 200
[0033] Mesh sieve, add a certain amount of analytically pure hydrochloric acid and deionized water, centrifuge and wash to obtain powdery molec...
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