A kind of preparation method of metal wire mesh SCR denitration catalyst and prepared catalyst
A denitration catalyst and wire mesh technology, applied in the field of environmental protection catalytic materials, can solve the problems of difficult loading of active components on the surface, low specific surface area, etc., achieve good denitration, enhance adhesion strength, and overcome the effects of easy peeling
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Embodiment 1
[0042] The preparation method of the metal wire mesh SCR denitration catalyst comprises the following steps:
[0043] (1) Cleaning of the carrier: take a stainless steel wire mesh with an alumina coating thickness of 50 μm, place it in a mixed solution of absolute ethanol and acetone, clean it with ultrasonic waves, dry it for later use;
[0044] (2) Chemical etching: the carrier cleaned in step (1) is placed in a NaOH aqueous solution with a concentration of 0.5mol / L for 15 minutes, and the etching temperature is 20°C. After taking out, it is cleaned and dried. ; The carrier is then placed in a HF solution with a concentration of 3 mol / L for 20 minutes, and the etching temperature is 20 ° C. After cleaning, drying and standby; the surface of the chemically etched aluminum oxide coating has a boss. pit micro-nano structure;
[0045] (3) weigh 156.3g hexahydrate cerium nitrate, 181.3g tetrahydrate manganese nitrate and 80g pentahydrate molybdenum nitrate and dissolve in 1000mL...
Embodiment 2
[0052] The preparation method of the metal wire mesh SCR denitration catalyst comprises the following steps:
[0053] (1) Cleaning of the carrier: take a stainless steel wire mesh with an alumina coating thickness of 80 μm, place it in a mixed solution of absolute ethanol and acetone, clean it with ultrasonic waves, dry it for later use;
[0054] (2) chemical etching: the carrier after cleaning in step (1) is placed in a NaOH aqueous solution with a concentration of 2 mol / L and left to etch for 5 minutes, and the etching temperature is 30° C. After being taken out, it is cleaned and dried; The carrier was then placed in a HF solution with a concentration of 8 mol / L for 5 min of static etching, and the etching temperature was 30 ° C. After cleaning, drying and standby; the surface of the chemically etched alumina coating had convex and concave surfaces Pit micro-nano structure;
[0055] (3) take by weighing 212.5g hexahydrate cerium nitrate, 246.3g tetrahydrate manganese nitra...
Embodiment 3
[0062] The preparation method of the metal wire mesh SCR denitration catalyst comprises the following steps:
[0063] (1) Cleaning of the carrier: take a stainless steel wire mesh with an alumina coating thickness of 80 μm, place it in a mixed solution of absolute ethanol and acetone, clean it with ultrasonic waves, dry it for later use;
[0064] (2) chemical etching: the carrier after cleaning in step (1) is placed in a NaOH aqueous solution with a concentration of 2 mol / L for 15 min for static etching, and the etching temperature is 50° C. After being taken out, it is cleaned and dried; The carrier was then placed in a HF solution with a concentration of 5 mol / L for 10 min of static etching, and the etching temperature was 50 ° C. After cleaning, drying and standby; the surface of the chemically etched alumina coating had convex and concave surfaces. Pit micro-nano structure;
[0065] (3) take by weighing 268.8g hexahydrate cerium nitrate, 246.3g tetrahydrate manganese nitr...
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