CN107008400A - 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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CN107008400A
CN107008400A CN201710275669.5A CN201710275669A CN107008400A CN 107008400 A CN107008400 A CN 107008400A CN 201710275669 A CN201710275669 A CN 201710275669A CN 107008400 A CN107008400 A CN 107008400A
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component
weight
double
solid catalyst
ozone heterogeneous
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朱明�
夏梦琦
宋佳柠
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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.The preparation method is to use gamma-alumina, barite, perlite, albite, dolomite and calcite porous material make carrier, carrier is modified through lithium hypochlorite and double (acetylacetone,2,4-pentanedione) beryllium reamings, add the double dodecyldimethylamine ammonium chlorides of surfactant and surface activation process is carried out under ul-trasonic irradiation, then ultrasonic surface activated carrier in hydrothermal reaction kettle with composite mineralizer borax and potassium sulfate, catalytic activity auxiliary agent predecessor four (2, 2, 6, 6 tetramethyls 3, 5 heptadione acid) cerium (IV), three (3 trifluoroacetyl group D camphors) praseodymiums (III), it is hydrated three acetic acid terbiums, ten water holmium oxalate Rare-earth chemicals, catalytic active center component predecessor normal transition metallo-organic compound lysine manganese, cupric glutamate, zirconium carbonate ammonium and the golden potassium of precious metal chemical complex tetrachloro, hydro-thermal reaction is carried out under the effect of emulsifying agent Varisoft 432PPG, reaction product drying is removed after moisture, in Muffle furnace, calcination obtains ozone Heterogeneous oxidation solid catalyst under certain temperature.

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 gama-alumina, barite, perlite, albite, white Marble, calcite composition, by weight, gama-alumina:Barite:Perlite:Albite:Dolomite:The weight of calcite The ratio between=(5~15):(7~17):(9~19):(11~21):(13~23):(15~25), by weight, component A:B component Weight ratio=1:(10~20), component C is double dodecyldimethylamine ammonium chlorides, by weight, component C:Reaming, which is modified, to be carried Weight ratio=1 of body:(5~10), D components by composite mineralizer borax, potassium sulfate, catalytic activity auxiliary agent predecessor four (2,2, 6,6- tetramethyl -3,5- heptadione acid) cerium (IV), three (3- trifluoroacetyl group-D- camphors) praseodymiums (III), hydration three acetic acid terbiums, ten Water holmium oxalate Rare-earth chemicals, catalytic active center predecessor normal transition metallo-organic compound lysine manganese, The golden potassium of cupric glutamate, zirconium carbonate ammonium and precious metal chemical complex tetrachloro, emulsifying agent Varisoft 432PPG composition, by weight Gauge, borax:Potassium sulfate:Four (DPM dpm,dipivalomethane acid) ceriums (IV):Three (3- trifluoroacetyl group-D- camphor trees Brain) praseodymium (III):It is hydrated three acetic acid terbiums:Ten water holmium oxalates:Lysine manganese:Cupric glutamate:Zirconium carbonate ammonium:Tetrachloro gold potassium:Double 16 The weight ratio of alkyl dimethyl ammonium chloride=(4~8):(6~10):(3~6):(4~7):(5~8):(6~9):(10~ 15):(12~18):(4~7):(6~9):(6~20).Gama-alumina, barite, perlite, sodium in the B component is long Stone, dolomite, calcite 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 Gama-alumina, barite, perlite, albite, dolomite and calcite porous material carrier, in certain temperature and stirring Under the conditions of, 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 double dodecyldimethylamine ammonium chlorides [(C14H29)2N(CH3)2]+Cl-The aqueous solution, control ultrasonic power density, ultrasonic frequency, temperature and sonic oscillation time, super Under sound wave cavitation, double dodecyldimethylamine ammonium chloride [(C14H29)2N(CH3)2]+Cl-It is easy to escape into from the aqueous solution Reaming modified support duct is attached to reaming modified support surface, is beneficial to being interconnected and carrier surface work for carrier duct Change, enhance adsorptivity;After the completion of ultrasonic activation, ultrasonic surface activated carrier mixed liquor is transferred in hydrothermal reaction kettle, with boron Sand Na2B4O7·10H2O, potassium sulfate K2SO4Composite mineralizer, (2,2,6, the 6- tetramethyls -3,5- of catalytic activity auxiliary agent predecessor four Heptadione acid) cerium (IV) C22H38CeO4, three (3- trifluoroacetyl group-D- camphors) praseodymium (III) C36H42F9O6Pr, three acetic acid of hydration Terbium C6H11O7Tb, ten water holmium oxalate C6Ho2O12Rare-earth chemicals, catalytic active center component predecessor normal transition Metallo-organic compound lysine manganese C12H26N4O4, cupric glutamate C5H7NO4Cu, zirconium carbonate ammonium (NH4)2·C2H2O8Zr and your gold Belong to the golden potassium KAuCl of compound tetrachloro4, in emulsifying agent Varisoft 432PPG [(C16H33)2N(CH3)2]+Cl-Effect Lower carry out hydro-thermal reaction, mineralizer accelerates diffusion, activates reactant lattice, promotes the progress of solid phase reaction, ultrasound Surface active carrier and Rare-earth chemicals, normal transition metallo-organic compound, precious metal chemical complex Uniform Doped, Emulsifying agent Varisoft 432PPG make reaction solution formed quasi-stationary emulsion prevent separation of solid and liquid, sedimentation, simultaneously To the further surface active of porous mineral carrier, by the way that in certain temperature, the hydro-thermal reaction of time, drying obtains Uniform Doped Fine silt thing;The fine silt thing of Uniform Doped is in Muffle furnace, through high temperature sintering, and organic matter carbonization therein is further strong Change the microcellular structure of porous carrier, obtain porous carrier supported rare earth metal oxide, transition metal oxide and noble metal The ozone Heterogeneous oxidation solid catalyst of the catalytic active center of formation, improves the mithridatism and catalytic activity of catalyst.
Relative to art methods, outstanding advantages of the present invention are that gama-alumina, barite, treasure are used in technology of preparing Zhu Yan, albite, dolomite, calcite porous material make carrier, due to lithium hypochlorite LiClO and double (acetylacetone,2,4-pentanedione) berylliums C10H14BeO4Reaming effect, double dodecyldimethylamine ammonium chloride [(C14H29)2N(CH3)2]+Cl-Di-cetyl dimethyl Ammonium chloride [(C16H33)2N(CH3)2]+Cl-To being interconnected and surface activation for duct;Rare earth gold is made by hydro-thermal reaction Category organic compound, normal transition metallo-organic compound and precious metal chemical complex reach Uniform Doped and are attached to carrier surface In duct, high temperature sintering makes organic matter carbonization strengthen and form multi-level microcellular structure, and porous carrier load is dilute The multi-element metal catalytic active center of soil metal oxide, transition metal oxide and noble metal formation is combined more with porous carrier Plus firmly, the ozone Heterogeneous oxidation solid catalyst of preparation has a stronger adsorptivity, the cooperative effect of multi-element metal, especially It is stability and high activity that doped precious metal has, liquating out for metal catalytic activity component can be suppressed, improves catalysis The mithridatism and catalytic activity of agent, 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 gama-aluminas of 400 mesh standard sieves, 3.75g barites, 4.75g perlites, 5.75g albites, 6.75g dolomites, The weight of 7.75g calcites, 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, the double dodecyldimethylamine ammonium chlorides of 3.25g is added and is dissolved in 100ml The aqueous solution of ionized water, the weight concentration of the aqueous solution is 3.1%, is uniformly mixed, double dodecyldimethylamine ammonium chlorides (3.25g):Reaming modified support(31g )=1:9.5;It is 0.4W/m to control ultrasonic power density3, ultrasonic frequency 21kHz, temperature 41 DEG C of degree, sonic oscillation 2.2h;After the completion of ultrasonic activation, the ultrasonic surface activated carrier mixed liquor in ultrasound reactor is turned Move in 500ml hydrothermal reaction kettles, add by 2.1g boraxs, 3.05g potassium sulfates, (2,2,6, the 6- tetramethyls -3,5- of 1.6g tetra- Heptadione acid) cerium (IV), 2.05g tri- (3- trifluoroacetyl group-D- camphors) praseodymium (III), 2.6g be hydrated three acetic acid terbiums, 3.05g ten The golden potassium of water holmium oxalate, 5.05g lysines manganese, 6.1g cupric glutamates, 2.05g zirconium carbonate ammoniums, 3.1g tetrachloros, the double hexadecanes of 3.05g The aqueous solution that base alkyl dimethyl ammonium chloride and 50ml deionized waters are prepared, the weight concentration of the aqueous solution is 40.3%, the aqueous solution Weight:Weight=83.8g of ultrasonic surface activated carrier mixed liquor:134.25g=1:1.6, control 125 DEG C of temperature, 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, cooling down Afterwards, it can obtain the ozone Heterogeneous oxidation solid catalyst of fine particle shape.
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 gama-aluminas of 400 mesh standard sieves, 1.65g barites, 1.85g perlites, 2.05g albites, 2.25g dolomites, The weight of 2.45g calcites, 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, the double dodecyldimethylamine ammonium chlorides of 2.2g are added molten In the aqueous solution of 26ml deionized waters, the weight concentration of the aqueous solution is 7.8%, is uniformly mixed, double dodecyldimethylamine bases Ammonium chloride(2.2g):Reaming modified support(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 tetra- (2,2,6,6- Tetramethyl -3,5- heptadione acid) cerium (IV), 0.67g tri- (3- trifluoroacetyl group-D- camphors) praseodymium (III), 0.78g be hydrated three vinegar The golden potassium of sour terbium, the water holmium oxalates of 0.87g ten, 1.48g lysines manganese, 1.77g cupric glutamates, 0.68g zirconium carbonate ammoniums, 0.87g tetrachloros, The aqueous solution that 1.98g Varisoft 432PPGs and 10ml deionized waters are prepared, the weight concentration of the aqueous solution is 53.3%, the weight of the aqueous solution:Weight=21.43g of ultrasonic surface activated carrier mixed liquor:39.7g=1:1.9, control temperature 175 DEG C, 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, burns Burn after 7.5h, cooling down, can obtain the ozone Heterogeneous oxidation solid catalyst of fine particle shape.
Comparative example 1:Preparation process be not added with lithium hypochlorite, double (acetylacetone,2,4-pentanedione) berylliums, double dodecyldimethylamine ammonium chlorides, Outside Varisoft 432PPG, 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.
The embodiment of table 1 and comparative example prepare ozone Heterogeneous oxidation solid catalysis agent parameter

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 by γ- Aluminum oxide, barite, perlite, albite, dolomite, calcite composition, by weight, gama-alumina:Barite:It is precious Zhu Yan:Albite:Dolomite:The weight ratio of calcite=(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 double dodecyldimethylamines Ammonium chloride, by weight, component C:Weight ratio=1 of reaming modified support:(5~10), D components are by composite mineralizer boron Sand, potassium sulfate, catalytic activity auxiliary agent predecessor four (2,2,6,6- tetramethyl -3,5- heptadione acid) cerium (IV), three (3- trifluoro second Acyl group-D- camphors) praseodymium (III), hydration three acetic acid terbiums, ten water holmium oxalate Rare-earth chemicals, catalytic active center The golden potassium of predecessor normal transition metallo-organic compound lysine manganese, cupric glutamate, zirconium carbonate ammonium and precious metal chemical complex tetrachloro, Emulsifying agent Varisoft 432PPG is constituted, by weight, borax:Potassium sulfate:Four (2,2,6,6- tetramethyls -3,5- Heptadione acid) cerium (IV):Three (3- trifluoroacetyl group-D- camphors) praseodymiums (III):It is hydrated three acetic acid terbiums:Ten water holmium oxalates:Rely ammonia Sour manganese:Cupric glutamate:Zirconium carbonate ammonium:Tetrachloro gold potassium:The weight ratio of Varisoft 432PPG=(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 gama-alumina, barite, perlite, albite, dolomite, calcite group according to claim 1 Into gama-alumina, barite, perlite, albite, dolomite, calcite are crushed respectively, deionized water washing drying Remove after moisture, sieved through standard screen, it is 0.0370mm~0.0750mm to control particle diameter.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116474765A (en) * 2022-11-18 2023-07-25 江苏环保产业股份有限公司 Ozone catalyst based on bimetal composite oxide, preparation method and application

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116474765A (en) * 2022-11-18 2023-07-25 江苏环保产业股份有限公司 Ozone catalyst based on bimetal composite oxide, preparation method and application

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