CN107051506A - 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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CN107051506A
CN107051506A CN201710275623.3A CN201710275623A CN107051506A CN 107051506 A CN107051506 A CN 107051506A CN 201710275623 A CN201710275623 A CN 201710275623A CN 107051506 A CN107051506 A CN 107051506A
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solid catalyst
glauberite
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朱明�
王麒麟
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.With attapulgite, diopside, illite, raphite, fluorite and glauberite make carrier after lithium hypochlorite and double (acetylacetone,2,4-pentanedione) beryllium reamings, add surfactant tri-n-octyl methyl ammonium chloride and surface 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 (3 trifluoroacetyl group D camphors) praseodymium (III), three cyclopentadiene promethiums, three (4, 4, (2 thiophene) 1 of 4 trifluoro 1, 3 diacetyl) europium, three (6, 6, 7, 7, 8, 8, 8 seven fluorine 2, 2 dimethyl 3, 5 octene diketone) dysprosium (III), catalytic active center predecessor ferrous fumarate, citric acid nickel, zirconium carbonate ammonium and six nitroso rhodium trisodiums, hydro-thermal reaction is carried out under the effect of emulsifying agent dodecyl dihydroxypropyl sulfate methyl ammonium, calcination obtains ozone Heterogeneous oxidation solid catalyst in Muffle furnace after drying removing moisture.

Description

The preparation method of ozone Heterogeneous oxidation solid catalyst
Technical field
The present invention relates to a kind of preparation method of ozone Heterogeneous oxidation solid catalyst, category environmental protection and chemical catalyst skill Art field.
Background technology
Ozonation technology using ozone oxidation ability it is strong the characteristics of, can be by many organic pollution oxidation Decompositions, extensively For wastewater treatment.Catalytic ozonation technology is divided into ozone homogeneous catalytic oxidation and ozone heterogeneous catalytic oxidation, and ozone is equal Phase catalysis oxidation has that the more difficult separation and recovery of catalyst is reused, ozone utilization rate is low causes water process operating cost higher, Organic pollutant removal rate is relatively low simultaneously and easily causing secondary pollution of water is limited to its application;Ozone heterogeneous catalysis oxygen There is change technology catalyst to be easily isolated and recycled and reusable, ozone utilization rate is high, organic pollutant removal rate is higher, drop Low water process operating cost and receive significant attention its application the advantages of do not result in secondary pollution.Ozone heterogeneous catalysis It is to reach local organic matter enrichment by catalyst surface absorption organic matter that oxidation of organic compounds, which is decomposed, while ozone molecule absorption exists The hydroxyl radical free radical that catalyst surface produces high activity under catalyst action decomposes organic matter.Ozone heterogeneous catalytic oxidation Handle in waste water technology, core technology is the preparation of ozone Heterogeneous oxidation solid catalyst.
Ozone Heterogeneous oxidation solid catalyst is generally made up of carrier, activated centre and auxiliary agent.Due to being polluted in waste water Species are various, complex chemical composition feature, can produce harmful effect to performance such as absorption, the mithridatism of catalyst. Prepare that the carrier structure that ozone Heterogeneous oxidation solid catalyst uses is more single at present, adsorptivity is relatively low;Activated centre is universal Using normal transition metal salt, mithridatism is poor;Preparation method mainly has infusion process, the precipitation method, mixing method and collosol and gel etc. Method attachment activity center and adjuvant component are easily liquated out in carrier surface, activated centre and adjuvant component, cause catalyst Easily lose catalytic activity.For exist in current ozone Heterogeneous oxidation solid catalyst preparation method Catalyst Adsorption compared with Low, mithridatism is poor and easily loses catalytic activity problem, and exploitation is strengthened using multicomponent porous carrier through reaming, surface active Catalyst Adsorption, makees catalytic activity auxiliary agent predecessor, normal transition Organometallic using Rare-earth chemicals and closes Thing and precious metal chemical complex are made catalytic active center predecessor and contained with multicomponent porous carrier through hydro-thermal reaction, high temperature sintering preparation The ozone Heterogeneous oxidation solid catalyst of multi-element metal has to improve the preparation method of catalyst mithridatism and catalytic activity Larger environmental benefit and higher practical value.
The content of the invention
For existing in current ozone Heterogeneous oxidation solid catalyst preparation method, Catalyst Adsorption is relatively low, mithridatism Poor to lose catalytic activity problem with easy, exploitation strengthens catalyst using multicomponent porous carrier through reaming, surface active Adsorptivity, catalytic activity auxiliary agent predecessor, normal transition metallo-organic compound and expensive are made using Rare-earth chemicals Metallic compound is made catalytic active center predecessor and prepared with multicomponent porous carrier through hydro-thermal reaction, high temperature sintering containing polynary gold The ozone Heterogeneous oxidation solid catalyst of category to improve the preparation method of catalyst mithridatism and catalytic activity, it is characterized in that Component A can be added in closed reactor and deionized water stirring prepares the aqueous solution, the weight concentration for control component A is 2%~6%, After the completion of prepared by solution, B component is added under agitation, 35 DEG C~50 DEG C are warming up to, continues stirring reaction 3h~6h, is filtered, instead Product is answered to obtain reaming modified support after 102 DEG C~106 DEG C dry constant weights;Reaming modified support puts into ultrasound reactor, The aqueous solution prepared by component C and deionized water is added, the weight concentration of component C is 3%~8%, is uniformly mixed, and control is super Sound power density is 0.3~0.8W/m3, frequency 20kHz~30kHz, 40 DEG C~55 DEG C, sonic oscillation 2h~5h obtains ultrasound Surface active carrier mixed liquor;Ultrasonic surface activated carrier mixed liquor is transferred in hydrothermal reaction kettle, add D components and go from The aqueous solution that sub- water is prepared, the weight concentration of D components is 40%~55%, by weight, D component deionized water solutions:Ultrasonic table Weight ratio=1 of face activated carrier mixed liquor:(1.5~2), control 120 DEG C~180 DEG C of temperature, the hydro-thermal reaction time be 8h~ 16h, then dries to obtain fine particle;Fine particle is in Muffle furnace, 600 DEG C~950 DEG C, and calcination 3h~8h obtains ozone non- Homogeneous oxidizing solid catalyst.The component A is made up of lithium hypochlorite, double (acetylacetone,2,4-pentanedione) berylliums, by weight, lithium hypochlorite: Weight ratio=1 of double (acetylacetone,2,4-pentanedione) berylliums:(1~1.6), B component is by attapulgite, diopside, illite, raphite, firefly Stone, glauberite composition, by weight, attapulgite:Diopside:Illite:Raphite:Fluorite:The weight ratio of glauberite= (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 tri-n-octyl methyl ammonium chloride, by weight, component C:The weight ratio of reaming modified support =1:(5~10), D components are by composite mineralizer borax, the potassium sulfate, (3- trifluoroacetyl groups-D- of catalytic activity auxiliary agent predecessor three Camphor) praseodymium (III), three cyclopentadiene promethiums, three (4,4,4- tri- fluoro- 1- (2- thiophene) -1,3- diacetyl) europiums, three (6,6,7,7, 8,8,8- seven fluoro- 2,2- dimethyl -3,5- octene diketone) dysprosium (III) Rare-earth chemicals, catalytic active center forerunner Thing normal transition metallo-organic compound ferrous fumarate, citric acid nickel, zirconium carbonate ammonium and the nitroso rhodium of precious metal chemical complex six Trisodium, emulsifying agent dodecyl dihydroxypropyl sulfate methyl ammonium composition, by weight, borax:Potassium sulfate:Three (3- trifluoroacetyls Base-D- camphors) praseodymium (III):Three cyclopentadiene promethiums:Three (4,4,4- tri- fluoro- 1- (2- thiophene) -1,3- diacetyl) europiums:Three (6,6, The fluoro- 2,2- dimethyl -3,5- octenes diketone of 7,7,8,8,8- seven) dysprosium (III):Ferrous fumarate:Citric acid nickel:Zirconium carbonate ammonium: Six nitroso rhodium trisodiums:The weight ratio of dodecyl dihydroxypropyl sulfate methyl ammonium=(4~8):(6~10):(3~6):(4 ~7):(5~8):(6~9):(10~15):(12~18):(4~7):(6~9):(6~20).The concave convex rod of the B component Soil, diopside, illite, raphite, fluorite, glauberite are crushed respectively, and deionized water washing, which is dried, to be removed after moisture, - 200 mesh ,+400 mesh sieves point are carried out through standard screen, it is the mm of 0.0370mm~0.0750 control particle diameter.
What the technical method of the present invention was realized in:Lithium hypochlorite LiClO, double (second can be being added in closed reactor Acyl acetone) beryllium C10H14BeO4The aqueous solution is prepared with deionized water stirring, it is 0.0370mm~0.0750mm to add particle diameter after screening Attapulgite, diopside, illite, raphite, fluorite and glauberite 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 tri-n-octyl methyl ammonium chloride [(C8H17)3NCH3]+Cl-The aqueous solution, control ultrasonic power density, ultrasonic frequency, temperature and sonic oscillation time, in ultrasound Under ripple cavitation, tri-n-octyl methyl ammonium chloride [(C8H17)3NCH3]+Cl-It is easy to escape into reaming modified support from the aqueous solution Duct is attached to reaming modified support surface, is beneficial to being interconnected and carrier surface activation for carrier duct, enhances suction Attached property;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 three (3- trifluoroacetyl group-D- camphors) praseodymium (III) C36H42F9O6Pr, three cyclopentadiene promethium Pm (C5H5)3, three (4,4,4- tri- fluoro- 1- (2- thiophene) -1,3- diacetyl) europiums C24H18EuF9O6S3, three (the fluoro- 2,2- dimethyl -3,5- octenes diketone of 6,6,7,7,8,8,8- seven) dysprosium (III) C30H30DyF21O6 Rare-earth chemicals, catalytic active center component predecessor normal transition metallo-organic compound ferrous fumarate C4H2O4Fe, citric acid nickel C12H10O14Ni3, zirconium carbonate ammonium (NH4)2·C2H2O8Zr and six nitroso rhodium trisodium Na3Rh(NO2)6It is expensive Metallic compound, in emulsifying agent dodecyl dihydroxypropyl sulfate methyl ammonium [C12H25CH2CH(OH)CH(OH)N(CH3)3]+ CH3SO4 -Effect is lower to carry out hydro-thermal reaction, and mineralizer accelerates diffusion, activates reactant lattice, promotes solid phase reaction Carry out, ultrasonic surface activated carrier and Rare-earth chemicals, normal transition metallo-organic compound, precious metal chemical complex Uniform Doped, emulsifying agent dodecyl dihydroxypropyl sulfate methyl ammonium makes reaction solution form quasi-stationary emulsion to prevent solid-liquid point From, sedimentation, while to the further surface active of porous carrier, by the way that in certain temperature, the hydro-thermal reaction of time, drying is obtained The fine silt thing of even doping;The fine silt thing of Uniform Doped is in Muffle furnace, through high temperature sintering, organic matter carbonization therein The microcellular structure of porous carrier is further enhanced, porous carrier supported rare earth metal oxide, transition metal oxide is obtained With the ozone Heterogeneous oxidation solid catalyst of the catalytic active center of noble metal formation, improve the mithridatism of catalyst and urge Change activity.
Relative to art methods, outstanding feature of the present invention is that attapulgite, diopside, Erie are used in technology of preparing Stone, raphite, fluorite, glauberite porous material make carrier, due to lithium hypochlorite LiClO and double (acetylacetone,2,4-pentanedione) berylliums C10H14BeO4Reaming effect, tri-n-octyl methyl ammonium chloride [(C8H17)3NCH3]+Cl-, dodecyl dihydroxypropyl Methylsulfate Ammonium [C12H25CH2CH(OH)CH(OH)N(CH3)3]+CH3SO4 -The interconnected and surface activation in duct;Pass through hydro-thermal reaction Rare-earth chemicals, normal transition metallo-organic compound and precious metal chemical complex is set to reach Uniform Doped and be attached to In carrier surface and duct, high temperature sintering makes organic matter carbonization strengthen and form multi-level microcellular structure, porous load The multi-element metal catalytic active center of body supported rare earth metal oxide, transition metal oxide and noble metal formation is carried with porous Body combination is more firm, and the ozone Heterogeneous oxidation solid catalyst of preparation has stronger adsorptivity, the collaboration of multi-element metal Effect, stability and high activity that particularly doped precious metal has, can suppress liquating out for metal catalytic activity component, carry The mithridatism and catalytic activity of high 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 attapulgites of 400 mesh standard sieves, 3.75g diopsides, 4.75g illites, 5.75g raphites, 6.75g fluorites, The weight of 7.75g glauberite, 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 tri-n-octyl methyl ammonium chlorides is added and is dissolved in 100ml deionized waters The aqueous solution, the weight concentration of the aqueous solution is 3.1%, is uniformly mixed, tri-n-octyl methyl ammonium chloride(3.25g):Reaming changes Property carrier(31g )=1:9.5;It is 0.4W/m to control ultrasonic power density3, ultrasonic frequency 21kHz, 41 DEG C of temperature, ultrasound is shaken Swing 2.2h;After the completion of ultrasonic activation, the ultrasonic surface activated carrier mixed liquor in ultrasound reactor is transferred to 500ml hydro-thermals In reactor, add by 2.1g boraxs, 3.05g potassium sulfates, 1.6g tri- (3- trifluoroacetyl group-D- camphors) praseodymium (III), The cyclopentadiene promethiums of 2.05g tri-, 2.6g tri- (4,4,4- tri- fluoro- 1- (2- thiophene) -1,3- diacetyl) europium, 3.05g tri- (6,6,7,7, The fluoro- 2,2- dimethyl -3,5- octenes diketone of 8,8,8- seven) dysprosium (III), 5.05g ferrous fumarates, 6.1g citric acids nickel, 2.05g Zirconium carbonate ammonium, the nitroso rhodium trisodiums of 3.1g six, 3.05g dodecyl dihydroxypropyl sulfate methyl ammoniums and 50ml deionized waters are prepared The aqueous solution, the weight concentration of the aqueous solution is 40.3%, the weight of the aqueous solution:The weight of ultrasonic surface activated carrier mixed liquor Amount=83.8g: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 for 105 DEG C Thing;Fine silt thing is in Muffle furnace, 620 DEG C, calcination 3.2h, and after cooling down, the ozone that can obtain fine particle shape is heterogeneous Oxidized 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 attapulgites of 400 mesh standard sieves, 1.65g diopsides, 1.85g illites, 2.05g raphites, 2.25g fluorites, The weight of 2.45g glauberite, 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 tri-n-octyl methyl ammonium chlorides is added and is dissolved in 26ml The aqueous solution of deionized water, the weight concentration of the aqueous solution is 7.8%, is uniformly mixed, tri-n-octyl methyl 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, 54 DEG C of temperature, sonic oscillation 4.7h;After the completion of ultrasonic activation, the ultrasonic surface activated carrier mixed liquor in ultrasound reactor It is transferred in 100ml hydrothermal reaction kettles, adds by 0.78g boraxs, 0.97g the potassium sulfates, (3- trifluoroacetyl groups-D- of 0.58g tri- Camphor) praseodymium (III), the cyclopentadiene promethiums of 0.67g tri-, 0.78g tri- (4,4,4- tri- fluoro- 1- (2- thiophene) -1,3- diacetyl) europium, 0.87g tri- (the fluoro- 2,2- dimethyl -3,5- octenes diketone of 6,6,7,7,8,8,8- seven) dysprosium (III), 1.48g ferrous fumarates, 1.77g citric acids nickel, 0.68g zirconium carbonate ammoniums, the nitroso rhodium trisodiums of 0.87g six, 1.98g dodecyl dihydroxypropyl Methylsulfates 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:Ultrasonic table Weight=21.43g of face 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 fine silt thing is dried to obtain for 105 DEG C;Fine silt thing is in Muffle furnace, 930 DEG C, calcination 7.5h, after cooling down, can obtain thin The ozone Heterogeneous oxidation solid catalyst of powder particles 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 Divide and be made up of attapulgite, diopside, illite, raphite, fluorite, glauberite, by weight, attapulgite:Diopside: Illite:Raphite:Fluorite:The weight ratio of glauberite=(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 tricaprylmethyl chlorination Ammonium, by weight, component C:Weight ratio=1 of reaming modified support:(5~10), D components are by composite mineralizer borax, sulfuric acid Potassium, catalytic activity auxiliary agent predecessor three (3- trifluoroacetyl group-D- camphors) praseodymium (III), three cyclopentadiene promethiums, three (4,4,4- tri- Fluoro- 1- (2- thiophene) -1,3- diacetyl) europium, three (the fluoro- 2,2- dimethyl -3,5- octenes diketone of 6,6,7,7,8,8,8- seven) dysprosiums (III) Rare-earth chemicals, catalytic active center predecessor normal transition metallo-organic compound ferrous fumarate, lemon Lemon acid nickel, zirconium carbonate ammonium and the nitroso rhodium trisodium of precious metal chemical complex six, emulsifying agent dodecyl dihydroxypropyl sulfate methyl ammonium Composition, by weight, borax:Potassium sulfate:Three (3- trifluoroacetyl group-D- camphors) praseodymiums (III):Three cyclopentadiene promethiums:Three (4,4, 4- tri- fluoro- 1- (2- thiophene) -1,3- diacetyl) europium:Three (the fluoro- 2,2- dimethyl -3,5- octenes two of 6,6,7,7,8,8,8- seven Ketone) dysprosium (III):Ferrous fumarate:Citric acid nickel:Zirconium carbonate ammonium:Six nitroso rhodium trisodiums:Dodecyl dihydroxypropyl sulfuric acid first The weight ratio of ester ammonium=(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 attapulgite, diopside, illite, raphite, fluorite, glauberite group according to claim 1 Into attapulgite, diopside, illite, raphite, fluorite, glauberite are crushed respectively, and deionized water washing drying is removed Go after moisture, sieved through standard screen, it is 0.0370mm~0.0750mm to control particle diameter.
CN201710275623.3A 2017-04-25 2017-04-25 The preparation method of ozone Heterogeneous oxidation solid catalyst Withdrawn CN107051506A (en)

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Application publication date: 20170818