Low-temperature denitrification catalyst and preparation method thereof
A low-temperature denitrification and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of low denitrification activity, poor resistance to water and sulfur dioxide, etc., and achieve good nitrogen selectivity, Strong water and sulfur dioxide resistance, high denitrification activity
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Embodiment 1
[0042] Embodiment 1, the preparation of low-temperature denitration catalyst A
[0043] The preparation of the low-temperature denitration catalyst of this embodiment, the specific steps are as follows:
[0044] (1), the cerium precursor cerium nitrate of 8.68g, the neodymium precursor neodymium nitrate hexahydrate of 8.77g and 34.03g butyl titanate are dissolved with 100ml deionized water respectively, obtain cerium precursor solution, neodymium precursor solution and titanium precursor solution.
[0045] (2) Fully mix the metal precursor solution in step (1) to obtain a mixed precursor solution, and add 17.58 g of urea and stir for 1 hour to make the stirring uniform, and obtain a catalyst combustion liquid.
[0046] (3), the catalyst combustion solution in step (2) is placed in a ceramic crucible, slowly heated to 250 ° C in an air atmosphere, and maintained at this temperature for 2 hours, to obtain the initial product;
[0047] (4) The initial product of step (3) was calc...
Embodiment 2
[0049] Embodiment 2, the preparation of low-temperature denitration catalyst B
[0050] The preparation of the low-temperature denitration catalyst of this embodiment, the specific steps are as follows:
[0051] (1), the cerium precursor cerium nitrate of 8.68g, the neodymium precursor neodymium nitrate hexahydrate of 13.15g and 34.03g butyl titanate are dissolved with 100ml deionized water respectively, obtain cerium precursor solution, neodymium precursor solution and titanium precursor solution.
[0052] (2) Fully mix the metal precursor solution in step (1) to obtain a mixed precursor solution, add 18.73 g of urea and stir for 1 hour to make the stirring uniform, and obtain a catalyst combustion liquid.
[0053] (3), the catalyst combustion solution in step (2) is placed in a ceramic crucible, slowly heated to 300°C in an air atmosphere, and maintained at this temperature for 1h, to obtain the initial product;
[0054] (4) The initial product of step (3) was calcined at ...
Embodiment 3
[0056] Embodiment 3, the preparation of low-temperature denitration catalyst C
[0057] The preparation of the low-temperature denitration catalyst of this embodiment, the specific steps are as follows:
[0058] (1), 8.68g of cerium precursor cerium nitrate, 17.53g of neodymium precursor neodymium nitrate hexahydrate and 24g of titanium sulfate were dissolved in 100ml deionized water respectively to obtain cerium precursor solution, neodymium precursor solution and titanium precursor solution .
[0059] (2) Fully mix the metal precursor solution in step (1) to obtain a mixed precursor solution, add 17.51 g of urea and stir for 1 hour to make the stirring uniform, and obtain a catalyst combustion liquid.
[0060] (3) Place the catalyst combustion solution in step (2) in a ceramic crucible, slowly heat to 350°C in an air atmosphere, and maintain the temperature for 0.5h to obtain the primary product;
[0061] (4) The initial product of step (3) was calcined at 400°C for 6 ho...
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Abstract
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