Ozone heterogeneous oxidation solid catalyst preparation method

A heterogeneous oxidation, solid catalyst technology, applied in catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the performance of catalysts such as adsorption, poor anti-toxicity Influence, catalyst loses catalytic activity, easily loses catalytic activity and other problems, achieves good environmental and economic benefits, enhances anti-toxicity, and inhibits melting and precipitation.

Inactive Publication Date: 2017-08-18
SICHUAN NORMAL UNIVERSITY
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AI-Extracted Technical Summary

Problems solved by technology

Due to the wide variety of pollutants and the complex chemical composition of wastewater, it will have adverse effects on the performance of the catalyst, such as adsorption and anti-toxicity, and the catalyst will easily lose its catalytic activity.
At present, the main problems of the preparation method of ozone heterogeneous oxidation solid catalyst are small adsorption capacity, low adsorption selectivity, poor toxicity resistance of the catalyst, and easy ...
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Abstract

The invention belongs to the technical field of environment protection and chemical catalysts and relates to an ozone heterogeneous oxidation solid catalyst preparation method. The preparation method includes: taking porous mineral materials including activated carbon, carnallite, illite, ulexite, nitratine and dolomite as carriers; subjecting the carriers to lithium hypochlorite and bis(acetylacetone)beryllium broaching modification; adding surfactant dimethylhexadecylethyl ammonium sulfate for surface activation under the action of ultrasonic waves; subjecting the carriers subjected to ultrasonic surface activation to hydrothermal reaction, with a complex mineralizer composed of borax and potassium sulfate, catalytic activity auxiliary agents including samarium acetylacetonate, tri(4,4,4-trifuloro-1-(2-thiophene)-1,3-butanedione)europium, tri(trifluoromethanesulfonimide)ytterbium and lutetium carbonate hydrate rare earth metal compounds and catalytic activity central components including cobalt gluconate, L-aspartic acid molybdenum, gold potassium chloride, tetraammine dichloropalladium transition metals, in a hydrothermal reactor under the action of N-oleoyl-N',N'-diethylethylenediamine hydrochloride serving as an emulsifying agent; drying reaction products to remove moisture, and firing in a muffle furnace at a certain temperature to obtain an ozone heterogeneous oxidation solid catalyst.

Application Domain

Catalyst carriersOther chemical processes +7

Technology Topic

Ammonium sulfateMuffle furnace +31

Examples

  • Experimental program(2)
  • Comparison scheme(1)

Example Embodiment

[0007] Example 1: 1.35g lithium hypochlorite, 1.65g bis(acetylacetone) beryllium, 140ml deionized water were added to a 500ml sealable reactor and stirred and mixed uniformly. The weight concentration of the aqueous solution was 2.1%. The weight ratio of lithium chlorate: bis(acetylacetone) beryllium=1:1.2; 2.75g activated carbon, 3.75g carnallite, 4.75g illite, 5.75g washed and sieved through -200 mesh ~ +400 mesh standard sieve Sodium borite, 6.75g sodium saltpeter, 7.75g lapis lazuli, weight of lithium hypochlorite and bis(acetylacetone) beryllium (3g): weight of porous mineral material (31.5g)=1:9.5, heating to 36℃ , Continue to stir the reaction for 3.2h, wash and filter, dry and constant weight to obtain 31g of the expanded modified carrier; in a 500ml ultrasonic reactor, put 31g of the expanded modified carrier, and then add 3.25g of dimethylhexadecylethyl Ammonium ethyl sulfate is dissolved in an aqueous solution of 100ml deionized water. The weight concentration of the aqueous solution is 3.1%. Stir and mix evenly. Dimethyl hexadecyl ethyl ammonium ethyl sulfate (3.25g): Expanded modified carrier ( 31g)=1:9.5; control the ultrasonic power density to 0.4W/m 3 , Ultrasonic frequency 21kHz, temperature 41℃, ultrasonic oscillation for 2.2h; After the ultrasonic activation is completed, transfer the ultrasonic surface activation carrier mixture in the ultrasonic reactor to a 500ml hydrothermal reactor, and then add 2.1g borax and 3.05g sulfuric acid Potassium, 1.6g samarium acetylacetonate, 2.05g tris(4,4,4-trifluoro-1-(2-thiophene)-1,3-butanedione) europium, 2.6g tris(trifluoromethanesulfonimide) ) Ytterbium, 3.05g lutetium carbonate hydrate, 5.05g cobalt gluconate, 6.1gL-aspartic amino acid molybdenum, 2.05g potassium tetrachloroaurate, 3.1g dichlorotetraammine palladium, 3.05g N-oleoyl-N' , N'-Diethylethylenediamine hydrochloride and 50ml deionized water prepared by the aqueous solution, the weight concentration of the aqueous solution is 40.3%, the weight of the aqueous solution: the weight of the ultrasonic surface activation carrier mixture = 83.8g: 134.25g =1:1.6, control temperature 125℃, hydrothermal reaction time is 8.3h, then cool and dry to obtain fine powder; fine powder is burned in muffle furnace at 620℃, 3.2h, cooled down Then, a solid catalyst for ozone heterogeneous oxidation is obtained, and the solid catalyst for ozone heterogeneous oxidation is in the form of fine powder particles.

Example Embodiment

[0008] Example 2: 0.24g lithium hypochlorite, 0.36g bis(acetylacetone) beryllium, 10ml deionized water were added to a 100ml sealable reactor and stirred and mixed uniformly. The weight concentration of the aqueous solution was 5.7%. The weight ratio of lithium chlorate: bis(acetylacetone) beryllium=1:1.5; 1.45g activated carbon, 1.65g carnallite, 1.85g illite, 2.05g washed and sieved through -200 mesh ~ +400 mesh standard sieve Sodium borite, 2.25g sodium saltpeter, 2.45g lapis lazuli, lithium hypochlorite and bis(acetylacetone) beryllium weight (0.6g): the weight of porous mineral material (11.7g)=1:19.5, the temperature is increased to 48 ℃, continue to stir and react for 5.8h, wash and filter, dry and constant weight to obtain 11.5g of expanded modified carrier; put 11.5g of expanded modified carrier in a 100ml ultrasonic reactor, and then add 2.2g of dimethylhexadecane Ammonium ethyl ammonium ethyl sulfate dissolved in 26ml of deionized water. The weight concentration of the aqueous solution is 7.8%. Stir and mix evenly. Dimethyl hexadecyl ethyl ammonium ethyl sulfate (2.2g): reamed Sexual carrier (11.5g)=1:5.2; control the ultrasonic power density to 0.7W/m 3 , Ultrasonic frequency 29kHz, temperature 54℃, ultrasonic vibration for 4.7h; After the ultrasonic activation is completed, transfer the ultrasonic surface activation carrier mixture in the ultrasonic reactor to a 100ml hydrothermal reactor, and then add 0.78g borax and 0.97g sulfuric acid Potassium, 0.58g samarium acetylacetonate, 0.67g tris(4,4,4-trifluoro-1-(2-thiophene)-1,3-butanedione) europium, 0.78g tris(trifluoromethanesulfonimide) ) Ytterbium, 0.87g lutetium carbonate hydrate, 1.48g cobalt gluconate, 1.77gL-aspartic acid molybdenum, 0.68g potassium tetrachloroaurate, 0.87g dichlorotetraammine palladium, 1.98g N-oleoyl-N',N '-Diethylethylenediamine hydrochloride and 10ml deionized water prepared an aqueous solution, the weight concentration of the aqueous solution is 53.3%, the weight of the aqueous solution: the weight of the ultrasonic surface activation carrier mixture = 21.43g: 39.7g = 1 :1.9, control the temperature at 175℃, the hydrothermal reaction time is 15.5h, then cool and dry to obtain fine powder; the fine powder is burned in the muffle furnace at 930℃ for 7.5h, after cooling down, The ozone heterogeneous oxidation solid catalyst is obtained, and the ozone heterogeneous oxidation solid catalyst is in the form of fine powder particles.

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