A kind of flat type anti-sulfur low-temperature SCR denitrification catalyst and preparation method thereof
A denitration catalyst, a flat-plate technology, used in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of severe corrosion of pipeline equipment, low activity, loss of activity, etc.
Examples
Embodiment 1
[0027] (1) Dissolve 434.0g of cerium nitrate in 4400g of deionized water, and obtain a clear solution under stirring; add another 128.8g of zirconium oxychloride to the above solution of cerium nitrate; slowly add dropwise under vigorous stirring Ammonia water reaches pH 9 to get the hydroxide precipitate and let it stand for 24h; then the above mixture is filtered, washed, and 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-Ce-ZrO 2 Composite oxide powder, wherein the molar mass ratio of Ce:Zr is 1:0.4;
[0028] (2) ① Dissolve 50.0g of manganese acetate, 62.5g of ferric nitrate and 15.2g of ammonium paramolybdate in 40mL of deionized water to prepare its salt solution; then add manganese acetate, ferric nitrate and ammonium paramolybdate in the order The three solutions were added to 200g of the composite oxide carrier prepared in ...
Embodiment 2
[0033] (1) Dissolve 520.8g of cerium nitrate in 6000g of deionized water, and obtain a clear solution under stirring conditions; add another 193.2g of zirconium oxychloride to the cerium nitrate solution slowly; under vigorous stirring, slowly add ammonia water dropwise When the pH value reaches 9, get the hydroxide precipitate and let it stand for 20h; then the above mixture is filtered, washed, and 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-Ce-ZrO 2 Composite oxide powder, wherein the molar mass ratio of Ce:Zr is 1:0.5;
[0034] (2) ① Dissolve 75.8g of manganese acetate, 63.2g of ferric nitrate and 30.1g of ammonium paramolybdate in 50mL of deionized water to prepare its salt solution; then mix the manganese acetate, ferric nitrate and ammonium paramolybdate in the order Three solutions were added to 240g Ce-ZrO prepared in s...
Embodiment 3
[0039] (1) Dissolve 607.6g of cerium nitrate in 8000g of deionized water, and obtain a clear solution under stirring conditions; add another 360.6g of zirconium oxychloride to the cerium nitrate solution slowly; under vigorous stirring, slowly add ammonia water dropwise When the pH value reaches 9, get the hydroxide precipitate and let it stand for 24h; then 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 105°C for 12 hours, and in a muffle furnace at 550°C for 3 hours to obtain nano-Ce-ZrO 2 Composite oxide powder, wherein the molar mass ratio of Ce:Zr is 1:0.8;
[0040] (2) ①Respectively dissolve 90.0g manganese acetate, 56.3g ferric nitrate and 22.9g ammonium paramolybdate in 58mL deionized water to prepare its salt solution; then combine manganese acetate, ferric nitrate and ammonium paramolybdate in the order Three solutions were added to 300g Ce-ZrO prepared in step (1) 2 In the composite...
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Description
Claims
Application Information
- IPC
- B01J23/889; B01D53/90; B01D53/56
- Inventors
- 陆强; 黎方潜