CN107008306A - 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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CN107008306A
CN107008306A CN201710276076.0A CN201710276076A CN107008306A CN 107008306 A CN107008306 A CN 107008306A CN 201710276076 A CN201710276076 A CN 201710276076A CN 107008306 A CN107008306 A CN 107008306A
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component
solid catalyst
ozone heterogeneous
heterogeneous oxidation
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朱明�
江燕妮
岳馥莲
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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 medical stone, wollastonite, activated carbon, carnallite, flyash and taking coal gangue as carrier are after lithium hypochlorite and double (acetylacetone,2,4-pentanedione) beryllium reamings, add surfactant myristyl tributyl ammonium chloride and activation process is carried out under 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 (4, 4, (2 thiophene) 1 of 4 trifluoro 1, 3 diacetyl) europium, it is hydrated three acetic acid terbiums, carbonic acid lutetium hydrate, catalytic active center predecessor titanocenes ring substituted salicylic acid complex, zinc lactate, zirconium carbonate ammonium and the thiocyanato of precious metal chemical complex two silver(I)Sour potassium, hydro-thermal reaction is carried out under the effect of emulsifying agent hexatriacontane methyl ammonium, and drying removes after moisture that 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 Catalyst Adsorption, makees catalytic activity auxiliary agent predecessor, normal transition Organometallic using rare earth organo-metallic compound 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 organo-metallic compound 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 by medical stone, wollastonite, activated carbon, carnallite, flyash , gangue composition, by weight, medical stone:Wollastonite:Activated carbon:Carnallite:Flyash:The weight ratio of gangue=(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 myristyl tributyl ammonium chloride, 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 (4,4,4- tri- fluoro- 1- (2- thiophene) -1,3- diacetyl) europiums, three acetic acid terbiums of hydration, carbonic acid lutetium hydrate rare earth metal are organic Compound, catalytic active center predecessor normal transition metallo-organic compound titanocenes ring substituted salicylic acid complex, lactic acid Zinc, zirconium carbonate ammonium and the thiocyanato of precious metal chemical complex two silver(I)Sour potassium, emulsifying agent three-cetylmethylammonium chloride group Into, by weight, borax:Potassium sulfate:Isopropyl scandium oxide (III):Three (4,4,4- tri- fluoro- 1- (2- thiophene) -1,3- diacetyl) Europium:It is hydrated three acetic acid terbiums:Carbonic acid lutetium hydrate:Titanocenes ring substituted salicylic acid complex:Zinc lactate:Zirconium carbonate ammonium:Two sulphur Cyanate radical closes silver(I)Sour potassium:The weight ratio of three-cetylmethylammonium chloride=(4~8):(6~10):(3~6):(4~ 7):(5~8):(6~9):(10~15):(12~18):(4~7):(6~9):(6~20).The medical stone of B component, silicon ash Stone, activated carbon, carnallite, flyash, gangue are crushed respectively, and deionized water washing, which is dried, to be removed after moisture, through mark Quasi- sieve carries out -200 mesh ,+400 mesh sieves point, and 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 Medical stone, wollastonite, activated carbon, carnallite, flyash and gangue porous material carrier, in certain temperature and stirring bar Under part, 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 increasing Plus, filtering dries the reaming modified support input ultrasound reactor after constant weight, adds myristyl tributyl ammonium chloride C14H29N+(C4H9)3Cl- The aqueous solution, control ultrasonic power density, ultrasonic frequency, temperature and sonic oscillation time, in ultrasound Under ripple cavitation, myristyl tributyl ammonium chloride C14H29N+(C4H9)3Cl- It is easy to escape into reaming modification from the aqueous solution Carrier duct is attached to reaming modified support surface, is beneficial to being interconnected and carrier surface activation for carrier duct, enhancing 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 predecessor isopropyl scandium oxide (III) C9H21O3Sc、 Three (4,4,4- tri- fluoro- 1- (2- thiophene) -1,3- diacetyl) europium C24H18EuF9O6S3, hydration three acetic acid terbium C6H11O7Tb, carbonic acid lutetium Hydrate C3H2Lu2O10Rare-earth chemicals, catalytic active center predecessor normal transition metallo-organic compound two Luxuriant titanacycle substituted salicylic acid complex (C10H10)Ti(C7H4O3), zinc lactate C6H10O6Zn, zirconium carbonate ammonium (NH4)2·C2H2O8Zr With two thiocyanatos silver(I)Sour potassium K [Ag (SCN)2] precious metal chemical complex, in three-cetylmethylammonium chloride of emulsifying agent [(C16H33)3NCH3]+Cl-Effect is lower to carry out hydro-thermal reaction, and mineralizer accelerates diffusion, activates reactant lattice, promotes The progress of solid phase reaction, it is ultrasonic surface activated carrier and Rare-earth chemicals, normal transition organo-metallic compound, expensive Metallic compound Uniform Doped, three-cetylmethylammonium chloride of emulsifying agent makes reaction solution form quasi-stationary emulsion to prevent Separation of solid and liquid, sedimentation, while to the further surface active of porous carrier, by certain temperature, the hydro-thermal reaction of time, drying Obtain the fine silt thing of Uniform Doped;The fine silt thing of Uniform Doped is in Muffle furnace, through high temperature sintering, and organic matter therein is complete Full carbonization further enhances the microcellular structure of porous carrier, obtains porous carrier supported rare earth metal oxide, transition metal The ozone Heterogeneous oxidation solid catalyst of oxide and the catalytic active center of noble metal formation, improves the antitoxin of catalyst Property and catalytic activity.
Relative to art methods, outstanding feature of the present invention is that medical stone, wollastonite, activity are used in technology of preparing Charcoal, carnallite, flyash, gangue porous material make carrier, due to lithium hypochlorite LiClO and double (acetylacetone,2,4-pentanedione) berylliums C10H14BeO4Reaming effect, myristyl tributyl ammonium chloride C14H29N+(C4H9)3Cl-, three-cetylmethylammonium chloride [(C16H33)3NCH3]+Cl- To being interconnected and surface activation for duct;Rare earth organometallic is made 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 1:1.35g lithium hypochlorites, double (acetylacetone,2,4-pentanedione) berylliums of 1.65g, 140ml deionized waters are added to volume for 500ml Can be uniformly mixed in closed reactor, the weight concentration of the aqueous solution is 2.1%, lithium hypochlorite:Double (acetylacetone,2,4-pentanedione) berylliums Weight ratio=1:1.2;Add deionized water wash to it is neutral, 103 DEG C dry and remove the mesh of -200 mesh of sieving after moisture~+400 2.75g medical stones, 3.75g wollastonites, 4.75g activated carbons, 5.75g carnallites, 6.75g flyash, the 7.75g bastard coals of standard screen The weight of stone, 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, obtain reaming modified support 31g after continuing stirring reaction 3.2h, filtering, 103 DEG C of dry constant weights;In 500ml ultrasonic responses In device, reaming modified support 31g is put into, the water that 3.25g myristyl tributyl ammonium chlorides are dissolved in 100ml deionized waters is added Solution, the weight concentration of the aqueous solution is 3.1%, is uniformly mixed, myristyl tributyl ammonium chloride(3.25g):Reaming Modified support(31g )=1:9.5;It is 0.4 W/m to control ultrasonic power density3, ultrasonic frequency 21kHz, 41 DEG C of temperature, ultrasound Vibrate 2.2h;After the completion of ultrasonic activation, the ultrasonic surface activated carrier mixed liquor in ultrasound reactor is transferred to 500ml water In thermal response kettle, add by 2.1g boraxs, 3.05g potassium sulfates, 1.6g isopropyls scandium oxide (III), 2.05g tri- (4,4,4- tri- Fluoro- 1- (2- thiophene) -1,3- diacetyl) europium, 2.6g be hydrated three acetic acid terbiums, 3.05g carbonic acid lutetiums hydrate, 5.05g titanocenes rings Substituted salicylic acid complex, 6.1g zinc lactates, 2.05g zirconium carbonate ammoniums, the thiocyanatos of 3.1g bis- silver(I)Sour potassium, 3.05g The aqueous solution that three-cetylmethylammonium chloride and 50ml deionized waters are prepared, the weight concentration of the aqueous solution is 40.3%, should The weight of the aqueous solution:Weight=83.8g of ultrasonic surface activated carrier mixed liquor:134.25g =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, the ozone Heterogeneous oxidation solid catalyst of fine particle shape can obtain.
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 medical stones of 400 mesh standard sieves, 1.65g wollastonites, 1.85g activated carbons, 2.05g carnallites, 2.25g flyash, The weight of 2.45g gangues, 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 myristyl tributyl ammonium chlorides 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, myristyl tributyl chlorination Ammonium(2.2g):Reaming modified support(11.5g )=1:5.2;It is 0.7 W/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- (4,4,4- tri- fluoro- 1- (2- thiophene) -1,3- diacetyl) europium, 0.78g are hydrated three acetic acid terbiums, 0.87g carbon Sour lutetium hydrate, 1.48g titanocenes ring substituted salicylic acids complex, 1.77g zinc lactates, 0.68g zirconium carbonate ammoniums, the sulphur of 0.87g bis- Cyanate radical closes silver(I)The aqueous solution that sour potassium, tri--cetylmethylammonium chlorides of 1.98g and 10ml deionized waters are prepared, the water The weight concentration of 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, after cooling down, and the ozone Heterogeneous oxidation solid that can obtain fine particle shape is urged Agent.
Comparative example 1:Preparation process be not added with lithium hypochlorite, double (acetylacetone,2,4-pentanedione) berylliums, myristyl tributyl ammonium chloride, three- Outside cetylmethylammonium chloride, borax and potassium sulfate, whole preparation process, preparation condition are 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 Ethylenediamine it is not used under the same conditions, the waste water that directly black 19 and active golden yellow K-2RA is prepared carries out ozone Heterogeneous oxidation Processing.Treatment conditions are:Rate of charge=1000L of organic wastewater and catalyst:1g, organic wastewater CODCrValue 853.9mg/L, Ozone dosage 80mg/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 is by wheat meal Stone, wollastonite, activated carbon, carnallite, flyash, gangue composition, by weight, medical stone:Wollastonite:Activated carbon:Light halogen Stone:Flyash:The weight ratio of gangue=(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 myristyl tributyl ammonium chloride, 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 (4,4,4- tri- fluoro- 1- (2- thiophene) -1,3- diacetyl) europiums, hydration three Acetic acid terbium, carbonic acid lutetium hydrate Rare-earth chemicals, catalytic active center predecessor normal transition Organometallic are closed Thing titanocenes ring substituted salicylic acid complex, zinc lactate, zirconium carbonate ammonium and the thiocyanato of precious metal chemical complex two silver(I)Acid Potassium, three-cetylmethylammonium chloride of emulsifying agent composition, by weight, borax:Potassium sulfate:Isopropyl scandium oxide (III):Three (4, 4,4- tri- fluoro- 1- (2- thiophene) -1,3- diacetyl) europium:It is hydrated three acetic acid terbiums:Carbonic acid lutetium hydrate:Titanocenes ring replaces water Poplar acid complex:Zinc lactate:Zirconium carbonate ammonium:Two thiocyanatos silver(I)Sour potassium:The weight of three-cetylmethylammonium chloride The ratio between=(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 medical stone, wollastonite, activated carbon, carnallite, flyash, gangue according to claim 1, Medical stone, wollastonite, activated carbon, carnallite, flyash, gangue 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.
CN201710276076.0A 2017-04-25 2017-04-25 The preparation method of ozone Heterogeneous oxidation solid catalyst Withdrawn CN107008306A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112675846A (en) * 2020-12-22 2021-04-20 安徽稞馨环境科技有限公司 Preparation method and application of noble metal monolithic catalyst for removing carbon monoxide at room temperature by catalytic oxidation method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112675846A (en) * 2020-12-22 2021-04-20 安徽稞馨环境科技有限公司 Preparation method and application of noble metal monolithic catalyst for removing carbon monoxide at room temperature by catalytic oxidation method

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