Binder-free FAU type molecular sieve particles and preparation method and application thereof
A binder-free, molecular sieve technology, applied in molecular sieves and alkali exchange compounds, chemical instruments and methods, inorganic chemistry, etc., can solve problems such as cumbersome process flow and large environmental pollution
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Embodiment 1
[0106] Preparation of oil phase, surfactant phase and water phase three-phase system:
[0107] Dissolve 12.3 parts of sodium metaaluminate and 12.0 parts of sodium hydroxide in 115.0 parts of deionized water, stir to dissolve them and filter with suction to obtain a clear liquid (aqueous phase), and then add 20 parts of CTAB to the top of the obtained clear liquid. Saturated aqueous solution (surfactant phase) and 40 parts of n-heptane (oil phase) to form a three-phase system containing an oil phase, a surfactant phase and an aqueous phase as a solution system for molding the silicone gel precursor.
[0108] Preparation of binder-free FAU molecular sieve particles:
[0109] Weigh 23.5 parts of silica sol (40wt.%, silica nanoparticle size is about 20nm) and 5 parts of ammonium chloride solution (10wt.%), stir quickly and evenly, obtain a silica gel mixture, The mixture is added dropwise to the molding solution system prepared above to obtain a silica gel precursor. After extracting ...
Embodiment 2
[0111] Preparation of oil phase, surfactant phase and water phase three-phase system:
[0112] Dissolve 16.4 parts of sodium metaaluminate and 12.0 parts of sodium hydroxide in 115.0 parts of deionized water, stir to dissolve and filter to obtain a clear liquid (aqueous phase), and then add 20 parts of CTAB to the top of the obtained clear liquid. Saturated aqueous solution (surfactant phase) and 40 parts of n-heptane (oil phase) to form a three-phase system containing an oil phase, a surfactant phase and an aqueous phase as a solution system for molding the silicone gel precursor.
[0113] Preparation of binder-free FAU molecular sieve particles:
[0114] Weigh 23.5 parts of silica sol (40wt.%, silica nanoparticle size is about 20nm) and 5 parts of ammonium chloride solution (10wt.%), stir quickly and evenly, obtain a silica gel mixture, The mixture is added dropwise to the molding solution system prepared above to obtain a silica gel precursor. After extracting and recovering the...
Embodiment 3
[0116] Preparation of oil phase, surfactant phase and water phase three-phase system:
[0117] Dissolve 12.3 parts of sodium metaaluminate and 12.0 parts of sodium hydroxide in 115.0 parts of deionized water, stir to dissolve them and filter with suction to obtain a clear liquid (aqueous phase), and then add 20 parts of CTAB to the top of the obtained clear liquid. Saturated aqueous solution (surfactant phase) and 40 parts of n-heptane (oil phase) to form a three-phase system containing an oil phase, a surfactant phase and an aqueous phase as a solution system for molding the silicone gel precursor.
[0118] Preparation of binder-free FAU molecular sieve particles:
[0119] Weigh 23.5 parts of silica sol (40wt.%, silica nanoparticle size is about 20nm) and 5 parts of ammonium chloride solution (10wt.%), stir quickly and evenly, obtain a silica gel mixture, The mixture is added dropwise to the molding solution system prepared above to obtain a silica gel precursor. After extracting ...
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