CN107008403A - 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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CN107008403A
CN107008403A CN201710275713.2A CN201710275713A CN107008403A CN 107008403 A CN107008403 A CN 107008403A CN 201710275713 A CN201710275713 A CN 201710275713A CN 107008403 A CN107008403 A CN 107008403A
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solid catalyst
ozone heterogeneous
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朱明�
丁瑶
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.With erionite, garnet, diatom is pure, kyanite, potassium feldspar and boromagnesite make carrier after lithium hypochlorite and double (acetylacetone,2,4-pentanedione) beryllium reamings, add dodecyltrimethyl and carry out activation process through ul-trasonic irradiation, then carrier in hydrothermal reaction kettle with composite mineralizer borax and potassium sulfate, catalytic activity auxiliary agent predecessor isopropyl scandium oxide (III), three (hexafluoroacetylacetone) yttrium (III) dihydrates, three (3 trifluoroacetyl group D camphors) praseodymiums (III), three (trifluoromethanesulfonimide) ytterbiums, catalytic active center predecessor titanocenes ring substituted salicylic acid complex, pyruvic acid isonicotinoyl hydrazone vanadium, cupric glutamate and chlordene osmium dipotassium, hydro-thermal reaction is carried out under the effect of the hydroxypropyl dichloride ammonium of emulsifying agent N dodecyl dimethyl N ' trimethyls 2, calcination obtains ozone Heterogeneous oxidation solid catalyst in Muffle furnace after drying removing moisture.

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 Catalyst Adsorption, makees catalytic activity auxiliary agent predecessor, normal transition Organometallic using Rare-earth chemicals and closes Thing and precious metal chemical complex are made catalytic active center predecessor and contained with multicomponent porous carrier through hydro-thermal reaction, high temperature sintering preparation The ozone Heterogeneous oxidation solid catalyst of multi-element metal has to improve the preparation method of catalyst mithridatism and catalytic activity 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 is long by erionite, garnet, pure diatom, kyanite, potassium Stone, boromagnesite composition, by weight, erionite:Garnet:Diatom is pure:Kyanite:Potassium feldspar:The weight ratio of boromagnesite=(5 ~15):(7~17):(9~19):(11~21):(13~23):(15~25), by weight, component A:The weight of B component it Than=1:(10~20);Component C is dodecyltrimethyl, by weight, component C:The weight of reaming modified support it Than=1:(5~10);D components by composite mineralizer borax, potassium sulfate, catalytic activity auxiliary agent predecessor isopropyl scandium oxide (III), Three (hexafluoroacetylacetone) yttrium (III) dihydrates, three (3- trifluoroacetyl group-D- camphors) praseodymiums (III), three (fluoroform sulphurs Acid imide) ytterbium Rare-earth chemicals, catalytic active center predecessor normal transition metallo-organic compound titanocenes ring Substituted salicylic acid complex, pyruvic acid isonicotinoyl hydrazone vanadium, cupric glutamate and precious metal chemical complex chlordene osmium dipotassium, emulsifying agent N- ten Dialkyl dimethyl-N '-trimethyl -2- hydroxypropyl dichlorides ammonium composition, by weight, borax:Potassium sulfate:Isopropyl scandium oxide (III):Three (hexafluoroacetylacetone) yttrium (III) dihydrates:Three (3- trifluoroacetyl group-D- camphors) praseodymiums (III):Three (trifluoros Sulfonyl methane imines) ytterbium:Titanocenes ring substituted salicylic acid complex:Pyruvic acid isonicotinoyl hydrazone vanadium:Cupric glutamate:Chlordene osmium two Potassium:The weight ratio of N- dodecyl dimethyls-N '-trimethyl -2- hydroxypropyl dichloride ammoniums=(4~8):(6~10):(3~ 6):(4~7):(5~8):(6~9):(10~15):(12~18):(4~7):(6~9):(6~20).In the B component Erionite, garnet, diatom are pure, kyanite, potassium feldspar, boromagnesite are crushed respectively, and deionized water washing, which is dried, removes water After point, -200 mesh ,+400 mesh sieves point are carried out through standard screen, it is the mm of 0.0370mm~0.0750 control particle diameter.
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 Erionite, garnet, pure diatom, kyanite, potassium feldspar and boromagnesite 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 dodecyltrimethyl [C12H25N(CH3)3] +Cl-The aqueous solution, control ultrasonic power density, ultrasonic frequency, temperature and sonic oscillation time, in ultrasound Under ripple cavitation, dodecyltrimethyl [C12H25N(CH3)3] +Cl-It is easy to escape into reaming from the aqueous solution and changes Property carrier duct or be attached to reaming modified support surface, be beneficial to being interconnected and carrier surface activation for carrier duct, increase Strong adsorptivity;After the completion of ultrasonic activation, ultrasonic surface activated carrier mixed liquor is transferred in hydrothermal reaction kettle, with borax Na2B4O7·10H2O, potassium sulfate K2SO4Composite mineralizer, catalytic activity auxiliary agent isopropyl scandium oxide (III) C9H21O3Sc, three (six Acetyl fluoride acetone) yttrium (III) dihydrate C15H3F18O6Y·2H2O, three (3- trifluoroacetyl group-D- camphors) praseodymiums (III) C36H42F9O6Pr, three (trifluoromethanesulfonimide) ytterbium [(CF3SO2)2N]3In Yb Rare-earth chemicals, catalytic activity Heart component transition metal organic compound titanocenes ring substituted salicylic acid complex (C10H10)Ti(C7H4O3), the different nicotinoyl of pyruvic acid Hydrazone vanadium [VO2(C9H8N3O5)] (C5H5N), cupric glutamate C5H7NO4Cu and chlordene osmium dipotassium K2OsCl6Precious metal chemical complex, in breast Agent N- dodecyl dimethyls-N '-trimethyl -2- hydroxypropyl dichloride ammoniums C12H25N+(CH3)2CH2CH(OH)CH2N+(CH3)3Cl2 -Effect is lower to carry out hydro-thermal reaction, and mineralizer accelerates diffusion, activates reactant lattice, promotes entering for solid phase reaction OK, ultrasonic surface activated carrier and Rare-earth chemicals, normal transition metallo-organic compound, precious metal chemical complex are equal Even doping, emulsifying agent N- dodecyl dimethyls-N '-trimethyl -2- hydroxypropyl dichloride ammoniums form reaction solution is quasi-stationary Emulsion prevents separation of solid and liquid, sedimentation, while to the further surface active of porous carrier, passing through the water in certain temperature, time Thermal response, drying obtains the fine silt thing of Uniform Doped;The fine silt thing of Uniform Doped is in Muffle furnace, through high temperature sintering, its In organic matter carbonization further enhance the microcellular structure of porous carrier, obtain the oxidation of porous carrier supported rare earth metal The ozone Heterogeneous oxidation solid catalyst of the catalytic active center of thing, transition metal oxide and noble metal formation, is improved The mithridatism and catalytic activity of catalyst.
Relative to art methods, outstanding advantages of the present invention are that erionite, garnet, diatom are used in technology of preparing Pure, kyanite, potassium feldspar and boromagnesite porous material make carrier, due to lithium hypochlorite LiClO and double (acetylacetone,2,4-pentanedione) berylliums C10H14BeO4Reaming effect, dodecyltrimethyl [C12H25N(CH3)3] +Cl-, N- dodecyl dimethyls-N '- Trimethyl -2- hydroxypropyl dichloride ammoniums C12H25N+(CH3)2CH2CH(OH)CH2N+(CH3)3Cl2 -To being interconnected and table for duct Face activation, organic matter carbonization enhances the microcellular structure of porous carrier;Make rare earth metal organic by hydro-thermal reaction Compound, normal transition metallo-organic compound and precious metal chemical complex reach Uniform Doped and are attached to carrier surface and duct Interior, high temperature sintering makes organic matter carbonization strengthen and form multi-level microcellular structure, porous carrier supported rare earth metal The multi-element metal catalytic active center of oxide, transition metal oxide and noble metal formation is combined more firm with porous carrier Gu, the ozone Heterogeneous oxidation solid catalyst of preparation has a stronger adsorptivity, the cooperative effect of multi-element metal, particularly mixes Stability and high activity that miscellaneous noble metal has, can suppress liquating out for metal catalytic activity component, improve catalyst Mithridatism and catalytic activity, with good environmental benefit and economic benefit.
Embodiment
Embodiment 1:1.4g lithium hypochlorites, double (acetylacetone,2,4-pentanedione) berylliums of 1.7g, 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 2.2%, 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~+ The 2.8g erionites of 400 mesh standard sieves, 3.8g garnets, 4.7g diatoms are pure, 5.8g kyanites, 6.7g potassium feldspars, 7.8g boron magnesium The weight of stone, lithium hypochlorite and double (acetylacetone,2,4-pentanedione) berylliums(3.1g):The weight of porous material(31.6g)=1:10.2, it is warming up to 36 DEG C, obtain reaming modified support 30g after continuing stirring reaction 3.2h, filtering, 103 DEG C of dry constant weights;In 500ml ultrasonic responses In device, reaming modified support 30g is put into, the water that 3.3g dodecyltrimethyls are dissolved in 100ml deionized waters is added Solution, the weight concentration of the aqueous solution is 3.2%, is uniformly mixed, dodecyltrimethyl(3.3g):Reaming changes Property carrier(30g )=1:9.1;It is 0.4W/m to control ultrasonic power density3, ultrasonic frequency 21kHz, 41 DEG C of temperature, ultrasound is shaken Swing 2.2h;After the completion of ultrasonic activation, the ultrasonic surface activated carrier mixed liquor in ultrasound reactor is transferred to 500ml hydro-thermals In reactor, add by 2.1g boraxs, 3.1g potassium sulfates, 1.6g isopropyls scandium oxide (III), 2.1g tri- (hexafluoroacetylacetone) Yttrium (III) dihydrate, 2.6g tri- (3- trifluoroacetyl group-D- camphors) praseodymium (III), 3.1g tri- (trifluoromethanesulfonimide) Ytterbium, 5.1g titanocenes ring substituted salicylic acids complex, 6.1g pyruvic acid isonicotinoyl hydrazones vanadium, 2g cupric glutamates, 3.1g chlordenes osmium two The aqueous solution that potassium, 3.1gN- dodecyl dimethyls-N '-trimethyl -2- hydroxypropyl dichloride ammoniums and 50ml deionized waters are prepared, The weight concentration of the aqueous solution is 40.5%, the weight of the aqueous solution:Weight=84g of ultrasonic surface activated carrier mixed liquor: 133.3g=1:1.6,125 DEG C of temperature is controlled, the hydro-thermal reaction time is 8.3h, then dries to obtain fine silt thing for 105 DEG C;Fine silt Thing is in Muffle furnace, 620 DEG C, calcination 3.2h, after cooling down, and the ozone Heterogeneous oxidation solid that can obtain fine particle shape is urged Agent.
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~+ The 1.45g erionites of 400 mesh standard sieves, 1.65g garnets, 1.85g diatoms are pure, 2.05g kyanites, 2.25g potassium feldspars, The weight of 2.45g boromagnesites, lithium hypochlorite and double (acetylacetone,2,4-pentanedione) berylliums(0.6g):The weight of porous material(11.7g)=1: 19.5,48 DEG C are warming up to, reaming modified support 11.5g is obtained after continuing stirring reaction 5.8h, filtering, 105 DEG C of dry constant weights; In 100ml ultrasound reactors, reaming modified support 11.5g is put into, 2.2g dodecyltrimethyls is added and is dissolved in The aqueous solution of 26ml deionized waters, the weight concentration of the aqueous solution is 7.8%, is uniformly mixed, chlorination trimethyl Ammonium(2.2g):Many reaming modified supports(11.5g )=1:5.2;It is 0.7W/m to control ultrasonic power density3, ultrasonic frequency 54 DEG C of 29kHz, temperature, sonic oscillation 4.7h;After the completion of ultrasonic activation, the ultrasonic surface activated carrier in ultrasound reactor Mixed liquor is transferred in 100ml hydrothermal reaction kettles, is added by 0.78g boraxs, 0.97g potassium sulfates, 0.58g isopropyl scandium oxides (III), 0.67g tri- (hexafluoroacetylacetone) yttrium (III) dihydrate, 0.78g tri- (3- trifluoroacetyl group-D- camphors) praseodymium (III), 0.87g tri- (trifluoromethanesulfonimide) ytterbium, 1.48g titanocenes ring substituted salicylic acids complex, 1.77g pyruvic acid are different Icotinoylhydrazones vanadium, 0.68g cupric glutamates, 0.87g chlordene osmiums dipotassium, 1.98gN- dodecyl dimethyls-N '-trimethyl -2- hydroxypropyls The aqueous solution that base dichloride ammonium and 10ml deionized waters are prepared, the weight concentration of the aqueous solution is 53.3%, the weight of the aqueous solution Amount:Weight=21.4g of ultrasonic surface activated carrier mixed liquor:39.7g=1:1.9, control 175 DEG C of temperature, the hydro-thermal reaction time For 15.5h, then fine silt thing is dried to obtain for 105 DEG C;Fine silt thing is in Muffle furnace, 930 DEG C, calcination 7.5h, after cooling down, It can obtain the ozone Heterogeneous oxidation solid catalyst of fine particle shape.
Comparative example 1:Preparation process is not added with lithium hypochlorite, double (acetylacetone,2,4-pentanedione) berylliums, dodecyltrimethyl, N- Outside dodecyl dimethyl-N '-trimethyl -2- hydroxypropyl dichlorides ammonium, borax and potassium sulfate, whole preparation process, bar is prepared 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.
Application Example 1:Ozone Heterogeneous oxidation solid catalyst point prepared by embodiment 1, embodiment 2 and comparative example 1 It is not used for Potassium Hydrogen Phthalate, ethylenediamine and directly black 19 waste water prepared under the same conditions and carries out ozone Heterogeneous oxidation Processing.Treatment conditions are:Rate of charge=1000L of organic wastewater and catalyst:1g, organic wastewater CODCrValue 975.5mg/L, Ozone dosage 60mg/L, processing time 1hr, ozone tail gas KI solution absorption detecting ozone utilization rates.Test data is included in Table 2.
The embodiment of table 1 and comparative example prepare ozone Heterogeneous oxidation solid catalysis agent parameter
The ozone Heterogeneous oxidation solid catalyst Application Example of table 2

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 is by lithium hypochlorite, double (acetyl Acetone) beryllium composition, by weight, lithium hypochlorite:Weight ratio=1 of double (acetylacetone,2,4-pentanedione) berylliums:(1~1.6), B component boiled by hair Stone, garnet, diatom are pure, kyanite, potassium feldspar, boromagnesite composition, by weight, erionite:Garnet:Diatom is pure:Aquamaine Stone:Potassium feldspar:The weight ratio of boromagnesite=(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 dodecyltrimethyl, is pressed Weight meter, component C:Weight ratio=1 of reaming modified support:(5~10), D components are urged by composite mineralizer borax, potassium sulfate Change coagent predecessor isopropyl scandium oxide (III), three (hexafluoroacetylacetone) yttrium (III) dihydrates, three (3- trifluoro second Acyl group-D- camphors) praseodymium (III), three (trifluoromethanesulfonimide) ytterbium Rare-earth chemicals, catalytic active center forerunner Thing normal transition metallo-organic compound titanocenes ring substituted salicylic acid complex, pyruvic acid isonicotinoyl hydrazone vanadium, cupric glutamate and Precious metal chemical complex chlordene osmium dipotassium, emulsifying agent N- dodecyl dimethyls-N '-trimethyl -2- hydroxypropyl dichlorides ammonium composition, By weight, borax:Potassium sulfate:Isopropyl scandium oxide (III):Three (hexafluoroacetylacetone) yttrium (III) dihydrates:Three (3- tri- Acetyl fluoride base-D- camphors) praseodymium (III):Three (trifluoromethanesulfonimide) ytterbiums:Titanocenes ring substituted salicylic acid complex:Acetone Sour isonicotinoyl hydrazone vanadium:Cupric glutamate:Chlordene osmium dipotassium:N- dodecyl dimethyls-N '-trimethyl -2- hydroxypropyl dichloride ammoniums Weight ratio=(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 erionite, garnet, pure diatom, kyanite, potassium feldspar, boromagnesite according to claim 1, Erionite, garnet, diatom are pure, kyanite, potassium feldspar, boromagnesite are crushed respectively, and deionized water washing, which is dried, removes water After point, sieved through standard screen, it is 0.0370mm~0.0750mm to control particle diameter.
CN201710275713.2A 2017-04-25 2017-04-25 The preparation method of ozone Heterogeneous oxidation solid catalyst Withdrawn CN107008403A (en)

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