Copper/manganese composited nitric oxide normal-temperature catalyst and preparation method thereof
A nitric oxide, catalyst technology, applied in catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the complex process, high reaction temperature, not suitable for NOx purification Treatment and other problems, to achieve the effect of simple process, high catalytic oxidation efficiency, and improved absorption efficiency
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Embodiment 1
[0017] Weigh 0.02mol manganese acetate and copper chloride respectively, dissolve them in 5ml deionized water, add appropriate amount of citric acid until the solution pH=4;
[0018] Weigh 0.04mol ammonium chloride at the ratio of metal ion: ammonium chloride = 1:1 (molar ratio), mix it with the metal salt solution evenly, and let it stand for 6-8 hours;
[0019] Weigh 3.25 g of 20-40 mesh activated alumina powder; immerse the alumina powder in the above solution at room temperature and equal volume for 12 hours, and then dry it in an oven at 120°C for 8 hours;
[0020] The nitric oxide catalyst can be obtained by calcining the above alumina powder in a muffle furnace at 450° C. for 3 hours.
[0021] The catalytic performance of the prepared catalyst was evaluated according to the aforementioned test conditions, and the catalytic conversion rate of NO was determined to be 95%, and the catalytic effect was basically stable within 3 hours.
Embodiment 2
[0023] Weigh 0.02mol of manganese acetate and 0.01mol of copper chloride respectively, dissolve them in 5ml of deionized water, add an appropriate amount of citric acid until the solution pH=4;
[0024] Weigh 0.03mol ammonium chloride at the ratio of metal ion: ammonium chloride = 1:1 (molar ratio), mix it with the metal salt solution evenly, and let it stand for 6-8 hours;
[0025] Weigh 3.25, 20-40 mesh activated alumina powder; immerse the alumina powder in the above solution at room temperature and equal volume for 12 hours, and then dry it in an oven at 120°C for 8 hours;
[0026] The nitric oxide catalyst can be obtained by calcining the above alumina powder in a muffle furnace at 450° C. for 3 hours.
[0027] The catalytic performance of the prepared catalyst was evaluated according to the aforementioned test conditions. It was determined that the catalytic conversion rate of NO was 90%, and the catalytic effect was basically stable within 3 hours.
Embodiment 3
[0029] Weigh 0.005mol manganese acetate and 0.02mol copper chloride respectively, dissolve them in 5ml deionized water, add appropriate amount of citric acid until the solution pH=4;
[0030] Weigh 0.0375mol ammonium chloride at the ratio of metal ion:ammonium chloride=1:1.5 (molar ratio), mix it with the metal salt solution evenly, and let it stand for 6-8 hours;
[0031] Weigh 3.25 g of 20-40 mesh activated alumina powder; impregnate the alumina powder in the above solution at room temperature for 12 hours, and then dry it in an oven at 120°C for 8 hours;
[0032] The nitric oxide catalyst can be obtained by calcining the above-mentioned alumina powder in a muffle furnace at 400° C. for 5 hours.
[0033] The catalytic performance of the prepared catalyst was evaluated according to the aforementioned test conditions, and the catalytic conversion rate of NO was determined to be 86%, and the catalytic effect was basically stable within 3 hours.
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