CN107088423A - The preparation method of ozone Heterogeneous oxidation solid catalyst - Google Patents

The preparation method of ozone Heterogeneous oxidation solid catalyst Download PDF

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CN107088423A
CN107088423A CN201710274642.4A CN201710274642A CN107088423A CN 107088423 A CN107088423 A CN 107088423A CN 201710274642 A CN201710274642 A CN 201710274642A CN 107088423 A CN107088423 A CN 107088423A
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solid catalyst
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苏智
朱明�
江燕妮
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Sichuan Normal University
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Abstract

The present invention relates to a kind of preparation method of ozone Heterogeneous oxidation solid catalyst, category environmental protection and technical field of chemical engineering catalysts.Make carrier after lithium hypochlorite and double (acetylacetone,2,4-pentanedione) beryllium reamings with activated carbon, carnallite, montmorillonite, sylvite, fluorite and glauberite, add surfactant diethyl maleate base double(Chlorination dodecyl dimethyl ammonium)Activation process is carried out under ul-trasonic irradiation, then carrier in hydrothermal reaction kettle with composite mineralizer borax and potassium sulfate, the cyclopentadiene promethium of catalytic activity auxiliary agent predecessor three, three (6, 6, 7, 7, 8, 8, 8 seven fluorine 2, 2 dimethyl 3, 5 octene diketone) dysprosium (III), trifluoromethayl sulfonic acid thulium (III), carbonic acid lutetium hydrate, catalytic active center predecessor cobalt edetate, zinc lactate and Tris(2,2'- bipyridyl) ruthenium (II) chloride hexahydrate, the ammino palladium of dichloro four, hydro-thermal reaction is carried out under the effect of emulsifying agent stearic acid trimethylamine groups ethanol ester ammonium iodide, drying is removed after moisture, calcination obtains ozone Heterogeneous oxidation solid catalyst in Muffle furnace.

Description

The preparation method of ozone Heterogeneous oxidation solid catalyst
Technical field
The present invention relates to a kind of preparation method of ozone Heterogeneous oxidation solid catalyst, category environmental protection and chemical catalyst skill Art field.
Background technology
Ozonation technology using ozone oxidation ability it is strong the characteristics of, can be by many organic pollution oxidation Decompositions, extensively For wastewater treatment.Catalytic ozonation technology is divided into ozone homogeneous catalytic oxidation and ozone heterogeneous catalytic oxidation, and ozone is equal Phase catalysis oxidation has that the more difficult separation and recovery of catalyst is reused, ozone utilization rate is low causes water process operating cost higher, Organic pollutant removal rate is relatively low simultaneously and easily causing secondary pollution of water is limited to its application;Ozone heterogeneous catalysis oxygen There is change technology catalyst to be easily isolated and recycled and reusable, ozone utilization rate is high, organic pollutant removal rate is higher, drop Low water process operating cost and receive significant attention its application the advantages of do not result in secondary pollution.Ozone heterogeneous catalysis It is to reach local organic matter enrichment by catalyst surface absorption organic matter that oxidation of organic compounds, which is decomposed, while ozone molecule absorption exists The hydroxyl radical free radical that catalyst surface produces high activity under catalyst action decomposes organic matter.Ozone heterogeneous catalytic oxidation Handle in waste water technology, core technology is the preparation of ozone Heterogeneous oxidation solid catalyst.
Ozone Heterogeneous oxidation solid catalyst is generally made up of carrier, activated centre and auxiliary agent.Due to being polluted in waste water Species are various, complex chemical composition feature, can produce harmful effect to performance such as absorption, the mithridatism of catalyst. Prepare that the carrier structure that ozone Heterogeneous oxidation solid catalyst uses is more single at present, adsorptivity is relatively low;Activated centre is universal Using normal transition metal salt, mithridatism is poor;Preparation method mainly has infusion process, the precipitation method, mixing method and collosol and gel etc. Method attachment activity center and adjuvant component are easily liquated out in carrier surface, activated centre and adjuvant component, cause catalyst Easily lose catalytic activity.For exist in current ozone Heterogeneous oxidation solid catalyst preparation method Catalyst Adsorption compared with Low, mithridatism is poor and easily loses catalytic activity problem, and exploitation is strengthened using multicomponent porous carrier through reaming, surface active The adsorptivity of catalyst, catalytic activity auxiliary agent predecessor, normal transition Organometallic are made using Rare-earth chemicals Compound and precious metal chemical complex are made catalytic active center predecessor and prepared with multicomponent porous carrier through hydro-thermal reaction, high temperature sintering Ozone Heterogeneous oxidation solid catalyst containing multi-element metal has to improve the preparation method of catalyst mithridatism and catalytic activity There are larger environmental benefit and higher practical value.
The content of the invention
For existing in current ozone Heterogeneous oxidation solid catalyst preparation method, Catalyst Adsorption is relatively low, mithridatism Poor to lose catalytic activity problem with easy, exploitation strengthens catalyst using multicomponent porous carrier through reaming, surface active Adsorptivity, catalytic activity auxiliary agent predecessor, normal transition metallo-organic compound and expensive are made using Rare-earth chemicals Metallic compound is made catalytic active center predecessor and prepared with multicomponent porous carrier through hydro-thermal reaction, high temperature sintering containing polynary gold The ozone Heterogeneous oxidation solid catalyst of category to improve the preparation method of catalyst mithridatism and catalytic activity, it is characterized in that Component A can be added in closed reactor and deionized water stirring prepares the aqueous solution, the weight concentration for control component A is 2%~6%, After the completion of prepared by solution, B component is added under agitation, 35 DEG C~50 DEG C are warming up to, continues stirring reaction 3h~6h, is filtered, instead Product is answered to obtain reaming modified support after 102 DEG C~106 DEG C dry constant weights;Reaming modified support puts into ultrasound reactor, The aqueous solution prepared by component C and deionized water is added, the weight concentration of component C is 3%~8%, is uniformly mixed, and control is super Sound power density is 0.3~0.8W/m3, frequency 20kHz~30kHz, 40 DEG C~55 DEG C, sonic oscillation 2h~5h obtains ultrasound Surface active carrier mixed liquor;Ultrasonic surface activated carrier mixed liquor is transferred in hydrothermal reaction kettle, add D components and go from The aqueous solution that sub- water is prepared, the weight concentration of D components is 40%~55%, by weight, D component deionized water solutions:Ultrasonic table Weight ratio=1 of face activated carrier mixed liquor:(1.5~2), control 120 DEG C~180 DEG C of temperature, the hydro-thermal reaction time be 8h~ 16h, then dries to obtain fine particle;Fine particle is in Muffle furnace, 600 DEG C~950 DEG C, and calcination 3h~8h obtains ozone non- Homogeneous oxidizing solid catalyst.The component A is made up of lithium hypochlorite, double (acetylacetone,2,4-pentanedione) berylliums, by weight, lithium hypochlorite: Weight ratio=1 of double (acetylacetone,2,4-pentanedione) berylliums:(1~1.6), B component by activated carbon, carnallite, montmorillonite, sylvite, fluorite, Glauberite is constituted, by weight, activated carbon:Carnallite:Montmorillonite:Sylvite:Fluorite:The weight ratio of glauberite=(5~ 15):(7~17):(9~19):(11~21):(13~23):(15~25), by weight, component A:The weight ratio of B component =1:(10~20), component C is that diethyl maleate base is double(Chlorination dodecyl dimethyl ammonium), by weight, component C:Reaming Weight ratio=1 of modified support:(5~10), D components are by composite mineralizer borax, potassium sulfate, catalytic activity auxiliary agent predecessor Three cyclopentadiene promethiums, three (the fluoro- 2,2- dimethyl -3,5- octenes diketone of 6,6,7,7,8,8,8- seven) dysprosiums (III), fluoroform Sulfonic acid thulium (III), carbonic acid lutetium hydrate Rare-earth chemicals, catalytic active center predecessor normal transition metal are organic Compound cobalt edetate, zinc lactate and precious metal chemical complex Tris(2,2'- bipyridyl) ruthenium (II) chloride hexahydrate, the ammino palladium of dichloro four, emulsification Agent stearic acid trimethylamine groups ethanol ester ammonium iodide is constituted, by weight, borax:Potassium sulfate:Three cyclopentadiene promethiums:Three (6,6,7, The fluoro- 2,2- dimethyl -3,5- octenes diketone of 7,8,8,8- seven) dysprosium (III):Trifluoromethayl sulfonic acid thulium (III):Carbonic acid lutetium is hydrated Thing:Cobalt edetate:Zinc lactate:Tris(2,2'- bipyridyl) ruthenium (II) chloride hexahydrate:The ammino palladium of dichloro four:Stearic acid trimethylamine groups ethanol ester The weight ratio of ammonium iodide=(4~8):(6~10):(3~6):(4~7):(5~8):(6~9):(10~15):(12~ 18):(4~7):(6~9):(6~20).Activated carbon, carnallite, montmorillonite, sylvite, fluorite, the glauberite of the B component Crushed respectively, deionized water washing, which is dried, to be removed after moisture, is carried out -200 mesh ,+400 mesh sieves point through standard screen, is controlled grain Footpath is the mm of 0.0370mm~0.0750.
What the technical method of the present invention was realized in:Lithium hypochlorite LiClO, double (second can be being added in closed reactor Acyl acetone) beryllium C10H14BeO4The aqueous solution is prepared with deionized water stirring, it is 0.0370mm~0.0750mm to add particle diameter after screening Activated carbon, carnallite, montmorillonite, sylvite, fluorite and glauberite porous material carrier, in certain temperature and stirring condition Under, the small Be of aqueous solution Ionic Radius2+(0.31Å)、Li+(0.60Å)Displace part ion radius in porous material big Ca2+(0.99Å)、K+(1.33Å)、Ba2+(1.35Å)Plasma, the aperture of porous material carrier becomes big, surface roughness increase, Filtering, dries the reaming modified support input ultrasound reactor after constant weight, adds diethyl maleate base double(Chlorination 12 Alkyl dimethyl ammonium)C36H72N2 +O4Cl2 -The aqueous solution, when control ultrasonic power density, ultrasonic frequency, temperature and sonic oscillation Between, under ultrasonic cavitation effect, diethyl maleate base is double(Chlorination dodecyl dimethyl ammonium)C36H72N2 +O4Cl2 -It is easy to Reaming modified support duct is escaped into from the aqueous solution or reaming modified support surface is attached to, and is beneficial to the mutual of carrier duct Connection and carrier surface activation, enhance adsorptivity;After the completion of ultrasonic activation, ultrasonic surface activated carrier mixed liquor is transferred to water In thermal response kettle, with borax Na2B4O7·10H2O, potassium sulfate K2SO4Composite mineralizer, the ring penta of catalytic activity auxiliary agent predecessor three Diene promethium Pm (C5H5)3, three (the fluoro- 2,2- dimethyl -3,5- octenes diketone of 6,6,7,7,8,8,8- seven) dysprosiums (III) C30H30DyF21O6, trifluoromethayl sulfonic acid thulium (III) C3F9O9S3Tm, carbonic acid lutetium hydrate C3H2Lu2O10Rare earth metal organic compound Thing, catalytic active center component predecessor normal transition metallo-organic compound cobalt edetate C12H22O14Co, zinc lactate C6H10O6Zn and Tris(2,2'- bipyridyl) ruthenium (II) chloride hexahydrate (C10H8N2)3Cl2Ru·(H2O)6, the ammino palladium Pd (NH of dichloro four3)4Cl2It is expensive Metallic compound, in emulsifying agent stearic acid trimethylamine groups ethanol ester ammonium iodide [C17H35COOCH2CH2N(CH3)CH2]+I-Enter under Water-filling thermal response, mineralizer accelerates diffusion, activates reactant lattice, promotes the progress of solid phase reaction, ultrasonic surface Activated carrier and Rare-earth chemicals, normal transition metallo-organic compound, precious metal chemical complex Uniform Doped, emulsification Agent stearic acid trimethylamine groups ethanol ester ammonium iodide make reaction solution formed quasi-stationary emulsion prevent separation of solid and liquid, sedimentation, simultaneously To the further surface active of porous carrier, by the way that in certain temperature, the hydro-thermal reaction of time, drying obtains the fine powder of Uniform Doped Grain thing;The fine silt thing of Uniform Doped is in Muffle furnace, through high temperature sintering, and organic matter carbonization therein is further enhanced The microcellular structure of porous carrier, obtains porous carrier supported rare earth metal oxide, transition metal oxide and noble metal and is formed Catalytic active center ozone Heterogeneous oxidation solid catalyst, improve the mithridatism and catalytic activity of catalyst.
Relative to art methods, outstanding feature of the present invention be in technology of preparing using activated carbon, carnallite, cover de- Soil, sylvite, fluorite, glauberite porous material make carrier, due to lithium hypochlorite LiClO and double (acetylacetone,2,4-pentanedione) beryllium C10H14BeO4 Reaming effect, diethyl maleate base is double(Chlorination dodecyl dimethyl ammonium)C36H72N2 +O4Cl2 -, stearic acid trimethylamine groups Ethanol ester ammonium iodide [C17H35COOCH2CH2N(CH3)CH2]+I-To being interconnected and surface activation for duct;Pass through hydro-thermal Reaction makes Rare-earth chemicals, normal transition metallo-organic compound and precious metal chemical complex reach Uniform Doped and attached In in carrier surface and duct, high temperature sintering makes organic matter carbonization strengthen and form multi-level microcellular structure, many The carrier loaded rare-earth oxide in hole, transition metal oxide and noble metal formation multi-element metal catalytic active center with it is many Hole carrier combination is more firm, and the ozone Heterogeneous oxidation solid catalyst of preparation has stronger adsorptivity, multi-element metal Cooperative effect, the noble metal of particularly doping have stability and high activity, can suppress the liquate of metal catalytic activity component Go out, improve the mithridatism and catalytic activity of catalyst, with good environmental benefit and economic benefit.
Embodiment
Embodiment 1:1.35g lithium hypochlorites, double (acetylacetone,2,4-pentanedione) berylliums of 1.65g, 140ml deionized waters, being added to volume is 500ml's can be uniformly mixed in closed reactor, and the weight concentration of the aqueous solution is 2.1%, lithium hypochlorite:Double (levulinics Ketone) beryllium weight ratio=1:1.2;Add deionized water wash to it is neutral, 103 DEG C dry remove -200 mesh of sieving after moisture~+ 2.75g activated carbons, 3.75g carnallites, 4.75g montmorillonites, 5.75g sylvites, 6.75g fluorites, the 7.75g of 400 mesh standard sieves The weight of glauberite, lithium hypochlorite and double (acetylacetone,2,4-pentanedione) berylliums(3g):The weight of porous material(31.5g)=1:10.5, it is warming up to 36 DEG C, reaming modified support 31g is obtained after continuing stirring reaction 3.2h, filtering, 103 DEG C of dry constant weights;It is anti-in 500ml ultrasonic waves Answer in device, put into reaming modified support 31g, add 3.25g diethyl maleates base double(Chlorination dodecyl dimethyl ammonium) The aqueous solution of 100ml deionized waters is dissolved in, the weight concentration of the aqueous solution is 3.1%, is uniformly mixed, diethyl maleate Base is double(Chlorination dodecyl dimethyl ammonium)(3.25g):Reaming modified support(31g )=1:9.5;The ultrasonic power density is controlled to be 0.4 W/m3, ultrasonic frequency 21kHz, 41 DEG C of temperature, sonic oscillation 2.2h;After the completion of ultrasonic activation, ultrasound reactor In ultrasonic surface activated carrier mixed liquor be transferred in 500ml hydrothermal reaction kettles, add by 2.1g boraxs, 3.05g sulfuric acid Potassium, the cyclopentadiene promethiums of 1.6g tri-, 2.05g tri- (the fluoro- 2,2- dimethyl -3,5- octenes diketone of 6,6,7,7,8,8,8- seven) dysprosium (III), 2.6g trifluoromethayl sulfonic acids thulium (III), 3.05g carbonic acid lutetiums hydrate, 5.05g cobalt edetates, 6.1g zinc lactates, 2.05g Tris(2,2'- bipyridyl) ruthenium (II) chlorides hexahydrate, the ammino palladium of 3.1g dichloros four, 3.05g stearic acid trimethylamine groups ethanol ester ammonium iodides The aqueous solution prepared with 50ml deionized waters, the weight concentration of the aqueous solution is 40.3%, the weight of the aqueous solution:Ultrasonic surface Weight=83.8g of activated carrier mixed liquor:134.25g=1:1.6,125 DEG C of temperature is controlled, the hydro-thermal reaction time is 8.3h, so Dry to obtain fine silt thing for 105 DEG C afterwards;Fine silt thing is in Muffle furnace, 620 DEG C, calcination 3.2h, after cooling down, can obtain fine powder Granular ozone Heterogeneous oxidation solid catalyst.
Embodiment 2:0.24g lithium hypochlorites, double (acetylacetone,2,4-pentanedione) berylliums of 0.36g, 10ml deionized waters, being added to volume is 100ml's can be uniformly mixed in closed reactor, and the weight concentration of the aqueous solution is 5.7%, lithium hypochlorite:Double (levulinics Ketone) beryllium weight ratio=1:1.5;Add deionized water wash to it is neutral, 103 DEG C dry remove -200 mesh of sieving after moisture~+ 1.45g activated carbons, 1.65g carnallites, 1.85g montmorillonites, 2.05g sylvites, 2.25g fluorites, the 2.45g of 400 mesh standard sieves The weight of glauberite, lithium hypochlorite and double (acetylacetone,2,4-pentanedione) berylliums(0.6g):The weight of porous material(11.7g)=1:19.5, heating To 48 DEG C, reaming modified support 11.5g is obtained after continuing stirring reaction 5.8h, filtering, 105 DEG C of dry constant weights;In 100ml ultrasounds In ripple reactor, reaming modified support 11.5g is put into, 2.2g diethyl maleates base is added double(Chlorination dimethyl Base ammonium)The aqueous solution of 26ml deionized waters is dissolved in, the weight concentration of the aqueous solution is 7.8%, is uniformly mixed, maleic acid two Ethoxycarbonyl is double(Chlorination dodecyl dimethyl ammonium)(2.2g):Reaming modified support(11.5g )=1:5.2;Control ultrasonic power Density is 0.7 W/m3, ultrasonic frequency 29kHz, 54 DEG C of temperature, sonic oscillation 4.7h;After the completion of ultrasonic activation, ultrasonic wave Ultrasonic surface activated carrier mixed liquor in reactor is transferred in 100ml hydrothermal reaction kettles, add by 0.78g boraxs, 0.97g potassium sulfates, the cyclopentadiene promethiums of 0.58g tri-, (the fluoro- 2,2- dimethyl -3,5- octenes of 6,6,7,7,8,8,8- seven of 0.67g tri- Diketone) dysprosium (III), 0.78g trifluoromethayl sulfonic acids thulium (III), 0.87g carbonic acid lutetiums hydrate, 1.48g cobalt edetates, 1.77g Zinc lactate, 0.68g Tris(2,2'- bipyridyl) ruthenium (II) chlorides hexahydrate, the ammino palladium of 0.87g dichloros four, 1.98g stearic acid trimethylamine groups ethanol The aqueous solution that ester ammonium iodide and 10ml deionized waters are prepared, the weight concentration of the aqueous solution is 53.3%, the weight of the aqueous solution: Weight=21.43g of ultrasonic surface activated carrier mixed liquor:39.7g=1:1.9,175 DEG C of temperature is controlled, the hydro-thermal reaction time is 15.5h, then dries to obtain fine silt thing for 105 DEG C;Fine silt thing is in Muffle furnace, 930 DEG C, calcination 7.5h, can after cooling down Obtain the ozone Heterogeneous oxidation solid catalyst of fine particle shape.
Comparative example 1:It is double that preparation process is not added with lithium hypochlorite, double (acetylacetone,2,4-pentanedione) berylliums, diethyl maleate base(Chlorination ten Dialkyl dimethyl ammonium), stearic acid trimethylamine groups ethanol ester ammonium iodide, outside borax and potassium sulfate, whole preparation process, prepare bar Part is identical with embodiment 1.
The parameter of ozone Heterogeneous oxidation solid catalyst prepared by embodiment 1, embodiment 2 and comparative example 1 is included in table 1.
The embodiment of table 1 and comparative example prepare ozone Heterogeneous oxidation solid catalysis agent parameter
Project Average pore size (nm) Pore volume (cm3/g) BET is than surface (m2/g)
Embodiment 1 4.786 0.6270 746.61
Embodiment 2 4.323 0.5834 624.55
Comparative example 1 2.634 0.3679 438.19

Claims (2)

1. a kind of preparation method of ozone Heterogeneous oxidation solid catalyst, it is characterized in that A groups can added in closed reactor Divide and deionized water stirring prepares the aqueous solution, the weight concentration for controlling component A is 2%~6%, after the completion of prepared by solution, in stirring Lower addition B component, is warming up to 35 DEG C~50 DEG C, continues stirring reaction 3h~6h, and filtering, reaction product is dry at 102 DEG C~106 DEG C Reaming modified support is obtained after dry constant weight, reaming modified support input ultrasound reactor, addition is matched somebody with somebody by component C and deionized water The aqueous solution of system, the weight concentration of component C is 3%~8%, is uniformly mixed, and it is 0.3~0.8W/ to control ultrasonic power density m3, frequency 20kHz~30kHz, 40 DEG C~55 DEG C, sonic oscillation 2h~5h obtains ultrasonic surface activated carrier mixed liquor, transfer Into hydrothermal reaction kettle, the aqueous solution that D components and deionized water are prepared is added, the weight concentration of D components is 40%~55%, is pressed Weight meter, D component deionized water solutions:Weight ratio=1 of ultrasonic surface activated carrier mixed liquor:(1.5~2), control temperature 120 DEG C~180 DEG C, the hydro-thermal reaction time is 8h~16h, then dries to obtain fine silt thing, fine silt thing is in Muffle furnace, 600 DEG C~950 DEG C, calcination 3h~8h obtains ozone Heterogeneous oxidation solid catalyst;The component A by expanding agent lithium hypochlorite, Double (acetylacetone,2,4-pentanedione) beryllium compositions, by weight, lithium hypochlorite:Weight ratio=1 of double (acetylacetone,2,4-pentanedione) berylliums:(1~1.6), B groups Divide and be made up of activated carbon, carnallite, montmorillonite, sylvite, fluorite, glauberite, by weight, activated carbon:Carnallite:Cover de- Soil:Sylvite:Fluorite:The weight ratio of glauberite=(5~15):(7~17):(9~19):(11~21):(13~23): (15~25), by weight, component A:Weight ratio=1 of B component:(10~20), component C is that diethyl maleate base is double(Chlorine Change dodecyl dimethyl ammonium), by weight, component C:Weight ratio=1 of reaming modified support:(5~10), D components are by multiple Close mineralizer borax, potassium sulfate, the cyclopentadiene promethium of catalytic activity auxiliary agent predecessor three, three (6,6,7,7,8,8,8- seven fluoro- 2,2- Dimethyl -3,5- octenes diketone) dysprosium (III), trifluoromethayl sulfonic acid thulium (III), carbonic acid lutetium hydrate rare earth metal organic compound Thing, catalytic active center predecessor normal transition metallo-organic compound cobalt edetate, zinc lactate and precious metal chemical complex three Bipyridyl ruthenic chloride hexahydrate, the ammino palladium of dichloro four, emulsifying agent stearic acid trimethylamine groups ethanol ester ammonium iodide composition, by weight Meter, borax:Potassium sulfate:Three cyclopentadiene promethiums:Three (the fluoro- 2,2- dimethyl -3,5- octenes diketone of 6,6,7,7,8,8,8- seven) dysprosiums (III):Trifluoromethayl sulfonic acid thulium (III):Carbonic acid lutetium hydrate:Cobalt edetate:Zinc lactate:Tris(2,2'- bipyridyl) ruthenium (II) chloride six is hydrated Thing:The ammino palladium of dichloro four:, the weight ratio of stearic acid trimethylamine groups ethanol ester ammonium iodide=(4~8):(6~10):(3~6): (4~7):(5~8):(6~9):(10~15):(12~18):(4~7):(6~9):(6~20).
2. B component is made up of activated carbon, carnallite, montmorillonite, sylvite, fluorite, glauberite according to claim 1, living Property charcoal, carnallite, montmorillonite, sylvite, fluorite, glauberite crushed respectively, deionized water washing, which is dried, to be removed after moisture, Sieved through standard screen, it is 0.0370mm~0.0750mm to control particle diameter.
CN201710274642.4A 2017-04-25 2017-04-25 The preparation method of ozone Heterogeneous oxidation solid catalyst Withdrawn CN107088423A (en)

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