CN107088419A - 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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CN107088419A
CN107088419A CN201710274557.8A CN201710274557A CN107088419A CN 107088419 A CN107088419 A CN 107088419A CN 201710274557 A CN201710274557 A CN 201710274557A CN 107088419 A CN107088419 A CN 107088419A
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weight
component
double
solid catalyst
ozone heterogeneous
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朱明�
刘阳
魏玉君
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Sichuan Normal University
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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.It is pure with diatom, kyanite, fluorite, glauberite, cubric niter and dolomite make carrier after lithium hypochlorite and double (acetylacetone,2,4-pentanedione) beryllium reamings, add surfactant monoalky lether trimethyl 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 three (hexafluoroacetylacetone) yttrium (III) dihydrate, three cyclopentadiene promethiums, three (2, 2, 6, 6 tetramethyls 3, 5 heptadione acid) gadolinium, three [N, double (trimethyl silane) amine of N] erbium, catalytic active center predecessor pyruvic acid isonicotinoyl hydrazone vanadium, cobalt edetate and two thiocyanatos silver(I)Sour potassium, the ammino platinum of dichloro two, carry out hydro-thermal reaction under emulsifying agent stearamidopropyl dimethylamine lactic acid salt action, and drying is removed after moisture, and 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 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 by diatom is pure, kyanite, fluorite, glauberite, cubric niter, Dolomite is constituted, and by weight, diatom is pure:Kyanite:Fluorite:Glauberite:Cubric niter:Dolomitic weight ratio=(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 monoalky lether trimethyl ammonium chloride, by weight, component C:The weight ratio of reaming modified support =1:(5~10), D components are by composite mineralizer borax, potassium sulfate, catalytic activity auxiliary agent predecessor three (hexafluoroacetylacetone) yttrium (III) dihydrate, three cyclopentadiene promethiums, three (DPM dpm,dipivalomethane acid) gadoliniums, the three [double (front threes of N, N- Base silane) amine] erbium Rare-earth chemicals, catalytic active center predecessor normal transition metallo-organic compound pyruvic acid Isonicotinoyl hydrazone vanadium, cobalt edetate and the thiocyanato of precious metal chemical complex two silver(I)Sour potassium, the ammino platinum of dichloro two, emulsifying agent Stearamidopropyl dimethylamine lactate is constituted, by weight, borax:Potassium sulfate:Three (hexafluoroacetylacetone) yttriums (III) two Hydrate:Three cyclopentadiene promethiums:Three (DPM dpm,dipivalomethane acid) gadoliniums:Three [N, N- pairs (trimethyl silanes) Amine] erbium:Pyruvic acid isonicotinoyl hydrazone vanadium:Cobalt edetate:Two thiocyanatos silver(I)Sour potassium:The ammino platinum of dichloro two:Stearmide The weight ratio of diemethylamine lactate=(4~8):(6~10):(3~6):(4~7):(5~8):(6~9):(10~ 15):(12~18):(4~7):(6~9):(6~20).The diatom of the B component is pure, kyanite, fluorite, glauberite, saliter Stone, dolomite are crushed respectively, and deionized water washing, which is dried, to be removed after moisture, and -200 mesh ,+400 mesh sieves are carried out through standard screen Point, 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 Diatom is pure, kyanite, fluorite, glauberite, cubric niter and dolomite 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 monoalky lether trimethyl ammonium chloride C12H25O(CH2CH2O)3N+(CH3)3Cl-The aqueous solution, when control ultrasonic power density, ultrasonic frequency, temperature and sonic oscillation Between, under ultrasonic cavitation effect, monoalky lether trimethyl ammonium chloride C12H25O(CH2CH2O)3N+(CH3)3Cl-It is easy to from water-soluble Liquid escapes into reaming modified support duct or is attached to reaming modified support surface, be beneficial to carrier duct be interconnected and Carrier surface is activated, and enhances adsorptivity;After the completion of ultrasonic activation, ultrasonic surface activated carrier mixed liquor is transferred to hydro-thermal reaction In kettle, with borax Na2B4O7·10H2O, potassium sulfate K2SO4The composite mineralizer, (hexafluoroacetylacetonate of catalytic activity auxiliary agent predecessor three Ketone) yttrium (III) dihydrate C15H3F18O6Y·2H2O, three cyclopentadiene promethium Pm (C5H5)3, three (2,2,6,6- tetramethyl -3, 5- heptadione acid) gadolinium C33H57GdO6, three [N, N- double (trimethyl silane) amine] erbium C18H54ErN3Si6Rare earth metal organic compound Thing, catalytic active center component predecessor normal transition metallo-organic compound pyruvic acid isonicotinoyl hydrazone vanadium [VO2(C9H8N3O5)] (C5H5N), cobalt edetate C12H22 O14Co and the thiocyanato of precious metal chemical complex two silver(I)Sour potassium K [Ag (SCN)2], two The ammino platinum Pt (NH of chlorine two3)2Cl2, in emulsifying agent stearamidopropyl dimethylamine lactate C17H35CONHCH2CH2CH2N( CH3 )2·CH3CH (OH) COOH effects are 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 metallo-organic compound, expensive Metallic compound Uniform Doped, emulsifying agent stearamidopropyl dimethylamine lactate, which makes reaction solution form quasi-stationary emulsion, to be prevented 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 The dry fine silt thing for obtaining Uniform Doped;The fine silt thing of Uniform Doped is in Muffle furnace, through high temperature sintering, organic matter therein Carbonization further enhances the microcellular structure of porous carrier, obtains porous carrier supported rare earth metal oxide, transition gold Belong to the ozone Heterogeneous oxidation solid catalyst of oxide and the catalytic active center of noble metal formation, improve the anti-of catalyst Toxicity and catalytic activity.
Relative to art methods, outstanding feature of the present invention be in technology of preparing using diatom is pure, kyanite, fluorite, Glauberite, cubric niter, dolomite porous material make carrier, due to lithium hypochlorite LiClO and double (acetylacetone,2,4-pentanedione) beryllium C10H14BeO4 Reaming effect, monoalky lether trimethyl ammonium chloride C12H25O(CH2CH2O)3N+(CH3)3Cl-, stearamidopropyl dimethylamine breast Hydrochlorate C17H35CONHCH2CH2CH2N( CH3)2·CH3CH (OH) COOH are interconnected and surface activation to duct;It is logical Cross hydro-thermal reaction and reach Rare-earth chemicals, normal transition metallo-organic compound and precious metal chemical complex and uniformly mix Miscellaneous and be attached in carrier surface and duct, high temperature sintering makes organic matter carbonization strengthen and form multi-level micropore knot In structure, the multi-element metal catalytic activity of porous carrier supported rare earth metal oxide, transition metal oxide and noble metal formation The heart is combined more firm with porous carrier, and the ozone Heterogeneous oxidation solid catalyst of preparation has stronger adsorptivity, polynary The cooperative effect of metal, stability and high activity that particularly doped precious metal has, can suppress metal catalytic activity component Liquate out, the mithridatism and catalytic activity of catalyst are improved, 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~+ The 2.75g diatoms of 400 mesh standard sieves are pure, 3.75g kyanites, 4.75g fluorites, 5.75g glauberite, 6.75g cubric niters, 7.75g The weight of dolomite, 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 monoalky lether trimethyl ammonium chlorides and be dissolved in 100ml deionized waters The aqueous solution, the weight concentration of the aqueous solution is 3.1%, is uniformly mixed, monoalky lether trimethyl ammonium chloride(3.25g):Reaming Modified support(31g )=1:9.5;It is 0.4W/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 tri- (hexafluoroacetylacetone) yttrium (III) dihydrate, The cyclopentadiene promethiums of 2.05g tri-, 2.6g tri- (DPM dpm,dipivalomethane acid) gadolinium, the [double (trimethyls of N, N- of 3.05g tri- Silane) amine] erbium, 5.05g pyruvic acid isonicotinoyl hydrazones vanadium, 6.1g cobalt edetates, the thiocyanatos of 2.05g bis- silver(I)Sour potassium, The aqueous solution that the ammino platinum of 3.1g dichloros two, 3.05g stearamidopropyl dimethylamines lactate and 50ml deionized waters are prepared, the water The weight concentration of solution is 40.3%, 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, 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 diatoms of 400 mesh standard sieves are pure, 1.65g kyanites, 1.85g fluorites, 2.05g glauberite, 2.25g cubric niters, 2.45g The weight of dolomite, 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 monoalky lether trimethyl ammonium chlorides is added and is dissolved in 26ml deionizations The aqueous solution of water, the weight concentration of the aqueous solution is 7.8%, is uniformly mixed, monoalky lether trimethyl ammonium chloride(2.2g): Reaming modified support(11.5g )=1:5.2;It is 0.7W/m to control ultrasonic power density3, ultrasonic frequency 29kHz, temperature 54 DEG C, sonic oscillation 4.7h;After the completion of ultrasonic activation, the ultrasonic surface activated carrier mixed liquor in ultrasound reactor is transferred to In 100ml hydrothermal reaction kettles, add by 0.78g boraxs, 0.97g potassium sulfates, 0.58g tri- (hexafluoroacetylacetone) yttrium (III) Dihydrate, the cyclopentadiene promethiums of 0.67g tri-, 0.78g tri- (DPM dpm,dipivalomethane acid) gadolinium, 0.87g tri- [N, Double (trimethyl silane) amine of N-] erbium, 1.48g pyruvic acid isonicotinoyl hydrazones vanadium, 1.77g cobalt edetates, the thiocyanatos of 0.68g bis- Silver(I)What sour potassium, the ammino platinum of 0.87g dichloros two, 1.98g stearamidopropyl dimethylamines lactate and 10ml deionized waters were prepared The aqueous solution, the weight concentration of the aqueous solution is 53.3%, the weight of the aqueous solution:The weight of ultrasonic surface activated carrier mixed liquor= 21.43g: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, can obtain the ozone Heterogeneous oxidation of fine particle shape Solid catalyst.

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 Point by diatom is pure, kyanite, fluorite, glauberite, cubric niter and dolomite are constituted, by weight, diatom is pure:Kyanite:Firefly Stone:Glauberite:Cubric niter:Dolomitic weight ratio=(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 monoalky lether trimethyl Ammonium chloride, by weight, component C:Weight ratio=1 of reaming modified support:(5~10), D components by composite mineralizer borax, Potassium sulfate, catalytic activity auxiliary agent predecessor three (hexafluoroacetylacetone) yttrium (III) dihydrate, three cyclopentadiene promethiums, three (2, 2,6,6- tetramethyl -3,5- heptadione acid) gadolinium, three [N, N- double (trimethyl silane) amine] erbium Rare-earth chemicals, urge Change activated centre predecessor normal transition metallo-organic compound pyruvic acid isonicotinoyl hydrazone vanadium, cobalt edetate and noble metal chemical combination The thiocyanato of thing two silver(I)Sour potassium, the ammino platinum of dichloro two, emulsifying agent stearamidopropyl dimethylamine lactate composition, by weight Gauge, borax:Potassium sulfate:Three (hexafluoroacetylacetone) yttrium (III) dihydrates:Three cyclopentadiene promethiums:Three (2,2,6,6- tetra- Methyl -3,5- heptadione acid) gadolinium:Three [double (trimethyl silane) amine of N, N-] erbiums:Pyruvic acid isonicotinoyl hydrazone vanadium:Gluconic acid Cobalt:Two thiocyanatos silver(I)Sour potassium:The ammino platinum of dichloro two:The weight ratio of stearamidopropyl dimethylamine lactate= (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 by diatom is pure, kyanite, fluorite, glauberite, cubric niter and dolomite are constituted, silicon according to claim 1 Algae is pure, kyanite, fluorite, glauberite, cubric niter and dolomite are crushed respectively, and deionized water washing, which is dried, removes moisture Afterwards, sieved through standard screen, it is 0.0370mm~0.0750mm to control particle diameter.
CN201710274557.8A 2017-04-25 2017-04-25 The preparation method of ozone Heterogeneous oxidation solid catalyst Withdrawn CN107088419A (en)

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