Preparation and application of a powder catalytic material, composite porous nano catalytic material containing phenolic resin
A technology of powder catalytic material and nano catalytic material, applied in the direction of heterogeneous catalyst chemical elements, special compound water treatment, physical/chemical process catalyst, etc., to achieve the effect of promoting full contact, good catalytic performance, and improving specific surface area
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Embodiment 1
[0049] Preparation of SrYLaSb by Catalytic Phase Inversion in Liquid Phase 2 o 9 Powder catalytic material:
[0050] a. Weigh SrCl with an electronic balance at a molar ratio of 1:1:1:2 2 "6H 2 O, Y (NO 3 ) 3 "6H 2 O, LaCl 3 "7H 2 O, SbCl 3 Put it into a mortar and grind evenly until the grinding particle size reaches 3-5 microns, transfer the fine powder to a quartz beaker, add deionized water to dissolve the drug, and prepare a mixed solution of 50 mL;
[0051] b. Weigh 6.00g of NaOH, FeCl 2 "4H 2 O4.98g was dissolved in deionized water to obtain 50 mL of 3mol / L NaOH solution and 0.5mol / L FeCl 2 Solution 50mL;
[0052] c. Use 3.0mol / L NaOH solution to adjust the pH value of the mixed solution described in step a to 9.5-10.5, add 1.0mol / L FeCl 2 solution as a catalyst, Fe 2+ with Fe 3+ The ratio of the amount of substance is 0.02:1;
[0053] d. Adjust the pH value of the system to 9.5-10.5, boil and reflux for 2 hours, and then perform centrifugation;
[0054...
Embodiment 2
[0056] Preparation of SrYLaSb by Hydrothermal Synthesis 2 o 9 Powder catalytic material:
[0057] a. Weigh the Sr(NO 3 ) 2 , Y(NO 3 )〃6H 2 O, La(NO 3 ) 3 , Sb 2 o 5 , citric acid, put it into a mortar and grind it evenly, transfer it to a quartz beaker, add deionized water to dissolve it, and make a transparent solution;
[0058] b. Under the condition of magnetic stirring, dropwise add NH with a mass fraction of 28% 4 OH solution into the transparent solution described in step a, and control its pH value between 9 and 9.5;
[0059] c. Transfer the transparent solution described in step b to a stainless steel reactor with a volume fraction of 80% polytetrafluoroethylene lined, and put it in an oven at 150° C. for 20 hours;
[0060] d. Use cold water to cool the transparent solution stored in an oven as described in step c. After filtering, washing, drying and grinding, heat the solution in an air atmosphere at 1°C for min. -1 Calcined at 400°C for 2h, ground and pr...
Embodiment 3
[0062] Preparation of SrYLaSb by Solid State Sintering 2 o 9 Powder catalytic material:
[0063] 1) The molar ratio SrO:Y 2 o 3 : La 2 o 3 : Sb 2 o 5 = 2:1:1:2 SrO, Y 2 o 3 , La 2 o 3 and Sb 2 o 5 Mix the powder thoroughly;
[0064] 2) Grinding in a ball mill, the particle size of the powder reaches 1.3-2.6 microns, drying, pressing into tablets, and firing in a high-temperature sintering furnace;
[0065] 3) Raise the temperature of the furnace to 400±30°C, keep it warm for 4±1 hours, then cool down with the furnace, take out the powder and crush it to a particle size of 1.2-2.2 microns;
[0066] 4) Press the powder in step 3) into tablets, put it into a high-temperature sintering furnace for sintering, and after cooling, take out the powder tablet and pulverize it until the particle size is 1.0-1.8 microns;
[0067] 5) Press the powder in step 4) into tablets, put it into a high-temperature sintering furnace for sintering, and raise the temperature. The heatin...
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