A kind of preparation method of ozone catalyst for water treatment and its product and application
A catalyst and water treatment technology, applied in the field of preparation of ozone catalysts for water treatment, can solve the problems of catalyst falling off, low adsorption performance, weak bonding between catalyst and carrier, etc., and achieve the effect of increasing the active area and improving the binding force.
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Embodiment 1
[0023] A kind of preparation method of ozone catalyst for water treatment, according to the following steps:
[0024] (1) Mix zinc diacetate and ethanol at a mass ratio of 1:200 to obtain a zinc diacetate alcohol solution. Immerse the pretreated molecular sieve in the zinc diacetate alcohol solution for 0.5 h, take out the molecular sieve and dry it in an oven at 80 °C for 2 h, then impregnate it and then dry it, repeat this process for 3 times, and finally calcinate it in a muffle furnace at 300 °C for 4 h. That is, the catalyst carrier with zinc oxide film wrapped on the surface is obtained;
[0025] (2) Mix CTAB, urea, cerium nitrate, and water at a mass ratio of 1:4:20:3000, and then stir on a magnetic stirrer to obtain a colorless and transparent mixed solution; the molecular sieve wrapped with zinc oxide film and The mixed solution was transferred to a 20 mL stainless steel reactor lined with polytetrafluoroethylene, sealed, placed in an oven, heated to 120 °C for 5 h, ...
Embodiment 2
[0028] Another kind of preparation method of ozone catalyst for water treatment, according to the following steps:
[0029] (1) Mix zinc diacetate and ethanol at a mass ratio of 1:250 to obtain a zinc diacetate alcohol solution. Immerse the pretreated molecular sieve in zinc diacetate alcohol solution for 1 h, take out the molecular sieve and bake in an oven at 90 °C for 1.5 h, then impregnate and then dry, repeat this process for 3 times, and finally calcinate in a muffle furnace at 350 °C for 3 h , that is, to obtain a catalyst carrier whose surface is coated with a zinc oxide film;
[0030] (2) Mix CTAB, urea, cerium nitrate, and water at a mass ratio of 1:5:30:4000, and then stir on a magnetic stirrer to dissolve all the solutes to obtain a colorless and transparent mixed solution; the carrier and The mixed solution was transferred to a 20 mL stainless steel reactor lined with polytetrafluoroethylene, sealed, placed in an oven, heated to 140 °C for 4 h, and then naturally...
Embodiment 3
[0033] Another kind of preparation method of ozone catalyst for water treatment, according to the following steps:
[0034] (1) Mix zinc diacetate and ethanol at a mass ratio of 1:300 to obtain a zinc diacetate alcohol solution. The pretreated molecular sieves were immersed in zinc diacetate alcohol solution for 1.5 h, then the molecular sieves were taken out and dried in an oven at 100 °C for 1 h, then impregnated and then dried, repeated three times, and finally calcined in a muffle furnace at 400 °C for 2 h , that is, to obtain a catalyst carrier whose surface is coated with a zinc oxide film;
[0035] (2) Mix CTAB, urea, cerium nitrate, and water at a mass ratio of 1:6:20:5000, and then stir on a magnetic stirrer to dissolve all the solutes to obtain a colorless and transparent mixed solution; the carrier and The mixed solution was transferred to a 20 mL stainless steel reactor lined with polytetrafluoroethylene, sealed, placed in an oven, heated to 160 °C for 3 h, and th...
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