CN107020106A - 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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CN107020106A
CN107020106A CN201710274450.3A CN201710274450A CN107020106A CN 107020106 A CN107020106 A CN 107020106A CN 201710274450 A CN201710274450 A CN 201710274450A CN 107020106 A CN107020106 A CN 107020106A
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solid catalyst
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朱明�
刘阳
魏玉君
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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, hydrotalcite, alunite, aluminium hydroxide and reddish black masonry carrier are after lithium hypochlorite and double (acetylacetone,2,4-pentanedione) beryllium reamings, add surfactant Cationic surfucant 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 (6, 6, 7, 7, 8, 8, 8 seven fluorine 2, 2 dimethyl 3, 5 octene diketone) dysprosium (III), trifluoromethayl sulfonic acid thulium (III), catalytic active center predecessor pyruvic acid isonicotinoyl hydrazone vanadium, cobalt edetate and six nitroso rhodium trisodiums, the ammino palladium of dichloro four, hydro-thermal reaction is carried out under the double decyl dimethyl ammonium bromide effects of emulsifying agent, 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 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, hydrotalcite, alunite, hydroxide Aluminium, celestine composition, by weight, diatom is pure:Kyanite:Hydrotalcite:Alunite:Aluminium hydroxide:The weight ratio of celestine= (5~15):(7~17):(9~19):(11~21):(13~23):(15~25), by weight, component A:The weight of B component The ratio between=1:(10~20), component C is Cationic surfucant, by weight, component C:Reaming modified support Weight ratio=1:(5~10), D components are by composite mineralizer borax, potassium sulfate, (the hexafluoro second of catalytic activity auxiliary agent predecessor three Acyl acetone) yttrium (III) dihydrate, three cyclopentadiene promethiums, three (the fluoro- 2,2- dimethyl -3,5- of 6,6,7,7,8,8,8- seven are pungent Alkene diketone) dysprosium (III), trifluoromethayl sulfonic acid thulium (III) Rare-earth chemicals, the common mistake of catalytic active center predecessor Cross metallo-organic compound pyruvic acid isonicotinoyl hydrazone vanadium, cobalt edetate and the nitroso rhodium trisodium of precious metal chemical complex six, dichloro Four ammino palladiums, the double decyl dimethyl ammonium bromide compositions of emulsifying agent, by weight, borax:Potassium sulfate:Three (hexafluoroacetylacetone) yttriums (III) dihydrate: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):Pyruvic acid isonicotinoyl hydrazone vanadium:Cobalt edetate:Six nitroso rhodium trisodiums:The ammonia of dichloro four Close palladium:The weight ratio of double decyl dimethyl ammonium bromides=(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, hydrotalcite, alum Stone, aluminium hydroxide, celestine are crushed respectively, deionized water washing dry remove moisture after, through standard screen carry out -200 mesh, + 400 mesh sieves 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, hydrotalcite, alunite, aluminium hydroxide and celestine 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 chlorination dodecyl dimethyl hydroxyl second Base ammonium [C12H25N(CH3)2CH2CH2OH]+Cl-The aqueous solution, control ultrasonic power density, ultrasonic frequency, temperature and sonic oscillation Time, under ultrasonic cavitation effect, Cationic surfucant [C12H25N(CH3)2CH2CH2OH]+Cl-Easily In escaping into reaming modified support duct from the aqueous solution or being attached to reaming modified support surface, it is beneficial to the phase in carrier duct The activation of intercommunicated and carrier surface, enhances adsorptivity;After the completion of ultrasonic activation, ultrasonic surface activated carrier mixed liquor is transferred to In hydrothermal reaction kettle, with borax Na2B4O7·10H2O, potassium sulfate K2SO4Composite mineralizer, catalytic activity auxiliary agent predecessor three (six Acetyl fluoride acetone) yttrium (III) dihydrate C15H3F18O6Y·2H2O, three cyclopentadiene promethium Pm (C5H5)3, three (6,6,7,7,8, The fluoro- 2,2- dimethyl -3,5- octenes diketone of 8,8- seven) dysprosium (III) C30H30DyF21O6, trifluoromethayl sulfonic acid thulium (III) C3F9O9S3Tm Rare-earth chemicals, catalytic active center component predecessor normal transition metallo-organic compound acetone Sour isonicotinoyl hydrazone vanadium [VO2(C9H8N3O5)] (C5H5N), cobalt edetate C12H22 O14Co and the nitroso rhodium of precious metal chemical complex six Trisodium Na3Rh(NO2)6, the ammino palladium Pd (NH of dichloro four3)4Cl2, in double decyl dimethyl the ammonium bromide [(C of emulsifying agent10H21)2N (CH3)2]+Br-Effect is lower to carry out hydro-thermal reaction, and mineralizer accelerates diffusion, activates reactant lattice, promotes solid phase anti- The progress answered, ultrasonic surface activated carrier and Rare-earth chemicals, normal transition metallo-organic compound, noble metal Compound Uniform Doped, the double decyl dimethyl ammonium bromides of emulsifying agent make reaction solution formed quasi-stationary emulsion prevent separation of solid and liquid, Sedimentation, while to the further surface active of porous carrier, by the way that in certain temperature, the hydro-thermal reaction of time, drying obtains uniform The fine silt thing of doping;The fine silt thing of Uniform Doped is in Muffle furnace, through high temperature sintering, and organic matter carbonization therein is entered One step enhances the microcellular structure of porous carrier, obtain porous carrier supported rare earth metal oxide, transition metal oxide and The ozone Heterogeneous oxidation solid catalyst of the catalytic active center of noble metal formation, improves mithridatism and the catalysis of catalyst Activity.
Relative to art methods, outstanding feature of the present invention is using diatom is pure, kyanite, neatly in technology of preparing Stone, alunite, aluminium hydroxide, celestine porous material make carrier, due to lithium hypochlorite LiClO and double (acetylacetone,2,4-pentanedione) berylliums C10H14BeO4Reaming effect, Cationic surfucant [C12H25N(CH3)2CH2CH2OH]+Cl-, double decyls Ditallowdimethyl ammonium bromide [(C10H21)2N(CH3)2]+Br-The interconnected and surface activation in duct;Made by hydro-thermal reaction dilute Earth metal organic compound, normal transition metallo-organic compound and precious metal chemical complex reach Uniform Doped and are attached to carrier In surface and duct, high temperature sintering makes organic matter carbonization strengthen and form multi-level microcellular structure, and porous carrier is born Carry the multi-element metal catalytic active center and porous carrier knot of rare-earth oxide, transition metal oxide and noble metal formation Close more firm, the ozone Heterogeneous oxidation solid catalyst of preparation has a stronger adsorptivity, the cooperative effect of multi-element metal, Stability and high activity that particularly doped precious metal has, can suppress liquating out for metal catalytic activity component, 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~+ The 2.75g diatoms of 400 mesh standard sieves are pure, 3.75g kyanites, 4.75g hydrotalcites, 5.75g alunites, 6.75g aluminium hydroxides, The weight of 7.75g celestines, lithium hypochlorite and double (acetylacetone,2,4-pentanedione) berylliums(3g):The weight of porous material(31.5g)=1:10.5, 36 DEG C are warming up to, reaming modified support 31g is obtained after continuing stirring reaction 3.2h, filtering, 103 DEG C of dry constant weights;It is super in 500ml In sound wave reactor, reaming modified support 31g is put into, 3.25g Cationic surfucants is added and is dissolved in The aqueous solution of 100ml deionized waters, the weight concentration of the aqueous solution is 3.1%, is uniformly mixed, chlorination dimethyl Base hydroxyethyl ammonium(3.25g):Reaming modified support(31g )=1:9.5;It is 0.4W/m to control ultrasonic power density3, ultrasonic wave frequency 41 DEG C of rate 21kHz, temperature, sonic oscillation 2.2h;After the completion of ultrasonic activation, the ultrasonic surface in ultrasound reactor is activated and carried Body mixed liquor is transferred in 500ml hydrothermal reaction kettles, is added by 2.1g boraxs, 3.05g potassium sulfates, (the hexafluoro acetyl of 1.6g tri- Acetone) yttrium (III) dihydrate, the cyclopentadiene promethiums of 2.05g tri-, 2.6g tri- (the fluoro- 2,2- dimethyl of 6,6,7,7,8,8,8- seven- 3,5- octenes diketone) dysprosium (III), 3.05g trifluoromethayl sulfonic acids thulium (III), 5.05g pyruvic acid isonicotinoyl hydrazones vanadium, 6.1g grapes The double decyl dimethyl ammonium bromides of saccharic acid cobalt, the nitroso rhodium trisodiums of 2.05g six, the ammino palladium of 3.1g dichloros four, 3.05g and 50ml go from The aqueous solution that sub- water is prepared, the weight concentration of the aqueous solution is 40.3%, the weight of the aqueous solution:Ultrasonic surface activated carrier is mixed Close weight=83.8g of liquid:134.25g=1:1.6,125 DEG C of temperature is controlled, the hydro-thermal reaction time is 8.3h, then 105 DEG C of drying Obtain fine silt thing;Fine silt thing is in Muffle furnace, 620 DEG C, calcination 3.2h, after cooling down, can obtain the smelly of fine particle shape Oxygen 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~+ The 1.45g diatoms of 400 mesh standard sieves are pure, 1.65g kyanites, 1.85g hydrotalcites, 2.05g alunites, 2.25g aluminium hydroxides, The weight of 2.45g celestines, 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 chlorination dodecyl dimethyl ethoxys are added Ammonium is dissolved in the aqueous solution of 26ml deionized waters, and the weight concentration of the aqueous solution is 7.8%, is uniformly mixed, chlorination dodecyl Dimethyl hydroxyethyl ammonium(2.2g):Reaming modified support(11.5g )=1:5.2;It is 0.7W/m to control ultrasonic power density3, it is super 54 DEG C of frequency of sound wave 29kHz, temperature, sonic oscillation 4.7h;After the completion of ultrasonic activation, the ultrasonic surface in ultrasound reactor Activated carrier mixed liquor is transferred in 100ml hydrothermal reaction kettles, is added by 0.78g boraxs, 0.97g potassium sulfates, 0.58g tri- (hexafluoroacetylacetone) yttrium (III) dihydrate, the cyclopentadiene promethiums of 0.67g tri-, (6,6,7,7,8,8,8- seven is fluoro- by 0.78g tri- 2,2- dimethyl -3,5- octenes diketone) dysprosium (III), 0.87g trifluoromethayl sulfonic acids thulium (III), 1.48g pyruvic acid isonicotinoyl hydrazones The double decyl dimethyl bromides of vanadium, 1.77g cobalt edetates, the nitroso rhodium trisodiums of 0.68g six, the ammino palladium of 0.87g dichloros four, 1.98g Change the aqueous solution that ammonium and 10ml deionized waters are prepared, the weight concentration of the aqueous solution is 53.3%, the weight of the aqueous solution:Ultrasound Weight=21.43g of surface active 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.

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, hydrotalcite, alunite, aluminium hydroxide and celestine are constituted, by weight, diatom is pure:Kyanite: Hydrotalcite:Alunite:Aluminium hydroxide:The weight ratio of celestine=(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 chlorination dodecane Base dimethyl hydroxyethyl ammonium, by weight, component C:Weight ratio=1 of reaming modified support:(5~10), D components are by being combined Mineralizer borax, potassium sulfate, catalytic activity auxiliary agent predecessor three (hexafluoroacetylacetone) yttrium (III) dihydrate, three rings penta 2 Alkene promethium, 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) Rare-earth chemicals, the different nicotinoyl of catalytic active center predecessor normal transition metallo-organic compound pyruvic acid Hydrazone vanadium, cobalt edetate and the nitroso rhodium trisodium of precious metal chemical complex six, the ammino palladium of dichloro four, the double decyl dimethyl bromides of emulsifying agent Change ammonium composition, by weight, borax:Potassium sulfate:Three (hexafluoroacetylacetone) yttrium (III) dihydrates: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): Pyruvic acid isonicotinoyl hydrazone vanadium:Cobalt edetate:Six nitroso rhodium trisodiums:The ammino palladium of dichloro four:Double decyl dimethyl brominations The weight ratio of ammonium=(4~8):(6~10):(3~6):(4~7):(5~8):(6~9):(10~15):(12~18):(4 ~7):(6~9):(6~20).
2. according to claim 1 B component by diatom is pure, kyanite, hydrotalcite, alunite, aluminium hydroxide and celestine group Into diatom is pure, kyanite, hydrotalcite, alunite, aluminium hydroxide and celestine are crushed respectively, deionized water washing drying Remove after moisture, sieved through standard screen, it is 0.0370mm~0.0750mm to control particle diameter.
CN201710274450.3A 2017-04-25 2017-04-25 The preparation method of ozone Heterogeneous oxidation solid catalyst Withdrawn CN107020106A (en)

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