Flat-plate type high-temperature SCR (Selective Catalytic Reduction) denitration catalyst and preparation method thereof
A denitrification catalyst, flat-plate technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve problems such as loss, catalyst loss of denitrification activity, reduction of denitrification activity, etc.
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[0034] Example 1
[0035] (1) Measure 12.61g of cerium nitrate and slowly drop it into 160g of deionized water; in addition, measure 4.41g of titanium tetrachloride and slowly drop it into the above aqueous solution containing cerium nitrate; under vigorous stirring conditions , Slowly add ammonia water until the pH value reaches about 9 to obtain the hydroxide precipitate and let it stand for 24 hours; filter, wash, and use AgNO 3 The solution is detected until no precipitation is produced; then it is placed in a common blast drying oven at 110°C for 12 hours and in a muffle furnace at 550°C for 3 hours to obtain nano-CeO 2 -TiO 2 The composite oxide powder has a Ce:Ti molar mass ratio of 1:0.8.
[0036] ②The first step is to mix: mix 450g of composite oxide carrier powder CeO 2 -TiO 2 , 60g of deionized water is added to the mixer for mixing and stirring;
[0037] The second step of mixing: After the first step of mixing is completed, 20g of pseudo-boehmite and 10g of deionized wat...
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[0042] Example 2
[0043] (1) Measure 12.61g of cerium nitrate and slowly drip into 150g of deionized water; another measure of 5.92g of tetra-n-butyl titanate, slowly drip into the above aqueous solution containing cerium nitrate; Under the conditions, slowly add ammonia water dropwise until the pH value reaches about 9 to get the hydroxide precipitate and let it stand for 15h; the above mixture is filtered, washed, and AgNO 3 The solution is detected until no precipitation occurs; then it is placed in a common blast drying oven at 110°C for 15 hours, and in a muffle furnace at 550°C for 2 hours to obtain nano-CeO 2 -TiO 2 The composite oxide powder has a Ce:Ti molar mass ratio of 1:0.6.
[0044] ②The first step is to mix: mix 450g of composite oxide carrier powder CeO 2 -TiO 2 , 70g of deionized water is added to the mixer for mixing and stirring;
[0045] The second step of mixing: After the first mixing is completed, 20g of pseudo-boehmite and 10g of deionized water are added to ...
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[0050] Example 3
[0051] (1) Measure 16.24g of cerium nitrate and slowly drip into 180g of deionized water; another measure of 9.64g of zirconium oxychloride, slowly drip into the above aqueous solution containing cerium nitrate; under vigorous stirring conditions , Slowly add ammonia water dropwise until the pH value reaches about 9 to obtain the hydroxide precipitate and let it stand for 16 hours; filter, wash, and use AgNO 3 The solution is detected until no precipitation occurs; then it is placed in a common blast drying oven at 90°C for 15 hours, and in a muffle furnace at 550°C for 2 hours to obtain nano-CeO 2 -ZrO 2 The composite oxide powder has a Ce:Zr molar mass ratio of 1:0.8.
[0052] ②The first step is to mix: mix 450g of composite oxide carrier powder CeO 2 -ZrO 2 , 60g of deionized water is added to the mixer for mixing and stirring;
[0053] The second step of mixing: after the first step of mixing is completed, 25g of pseudo-boehmite and 15g of deionized water are a...
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