CN107020118A - 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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CN107020118A
CN107020118A CN201710274823.7A CN201710274823A CN107020118A CN 107020118 A CN107020118 A CN 107020118A CN 201710274823 A CN201710274823 A CN 201710274823A CN 107020118 A CN107020118 A CN 107020118A
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weight
component
solid catalyst
double
ozone heterogeneous
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朱明�
吴雨婕
范耀月
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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.Make carrier after lithium hypochlorite and double (acetylacetone,2,4-pentanedione) beryllium reamings with activated carbon, carnallite, inclined aluminium hydroxide, phosphorite, shepardite and serpentinite, add surfactant diethyl maleate base double(Chlorination dodecyl dimethyl ammonium)Activation process is carried out under ul-trasonic irradiation, then carrier in hydrothermal reaction kettle with composite mineralizer borax and potassium sulfate, the cyclopentadiene promethium of catalytic activity auxiliary agent predecessor three, three acetic acid terbiums of hydration, trifluoromethayl sulfonic acid thulium (III), carbonic acid lutetium hydrate, catalytic active center predecessor cobalt edetate, zinc lactate and two thiocyanatos silver(I)Sour potassium, chlordene osmium dipotassium, in emulsifying agent hexadecyldimethyl benzyl ammonium(2 hydroxyls)Ethyl ammonium chloride effect is lower to carry out hydro-thermal reaction, 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 The adsorptivity of catalyst, catalytic activity auxiliary agent predecessor, normal transition Organometallic are made using Rare-earth chemicals Compound and precious metal chemical complex are made catalytic active center predecessor and prepared with multicomponent porous carrier through hydro-thermal reaction, high temperature sintering Ozone Heterogeneous oxidation solid catalyst containing multi-element metal has to improve the preparation method of catalyst mithridatism and catalytic activity There are 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 activated carbon, carnallite, inclined aluminium hydroxide, phosphorite, water Magnesite, serpentinite composition, by weight, activated carbon:Carnallite:Inclined aluminium hydroxide:Phosphorite:Shepardite:The weight of serpentinite 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 that diethyl maleate base is double(Chlorination dodecyl dimethyl ammonium), by weight, Component C:Weight ratio=1 of reaming modified support:(5~10), D components are by composite mineralizer borax, potassium sulfate, catalytic activity The cyclopentadiene promethium of auxiliary agent predecessor three, three acetic acid terbiums of hydration, trifluoromethayl sulfonic acid thulium (III), carbonic acid lutetium hydrate rare earth metal Organic compound, catalytic active center predecessor normal transition metallo-organic compound cobalt edetate, zinc lactate and noble metal The thiocyanato of compound two silver(I)Sour potassium, chlordene osmium dipotassium, emulsifying agent hexadecyldimethyl benzyl ammonium(2- hydroxyls)Ethyl ammonium chloride Composition, by weight, borax:Potassium sulfate:Three cyclopentadiene promethiums:It is hydrated three acetic acid terbiums:Trifluoromethayl sulfonic acid thulium (III):Carbonic acid Lutetium hydrate:Cobalt edetate:Zinc lactate:Two thiocyanatos silver(I)Sour potassium:Chlordene osmium dipotassium:Hexadecyldimethyl benzyl ammonium(2- Hydroxyl)The weight ratio of ethyl ammonium chloride=(4~8):(6~10):(3~6):(4~7):(5~8):(6~9):(10~ 15):(12~18):(4~7):(6~9):(6~20).Activated carbon, carnallite, inclined aluminium hydroxide, the phosphorus block of the B component Rock, shepardite, serpentinite 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 Activated carbon, carnallite, inclined aluminium hydroxide, phosphorite, shepardite and serpentinite 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 diethyl maleate base double(Chlorination Dodecyl dimethyl ammonium)C36H72N2 +O4Cl2 -The aqueous solution, control ultrasonic power density, ultrasonic frequency, temperature and ultrasound are shaken The time is swung, under ultrasonic cavitation effect, diethyl maleate base is double(Chlorination dodecyl dimethyl ammonium)C36H72N2 +O4Cl2 - It is easy to escape into reaming modified support duct from the aqueous solution or is attached to reaming modified support surface, is beneficial to carrier duct It is interconnected and carrier surface activation, enhances adsorptivity;After the completion of ultrasonic activation, the transfer of ultrasonic surface activated carrier mixed liquor Into hydrothermal reaction kettle, with borax Na2B4O7·10H2O, potassium sulfate K2SO4Composite mineralizer, catalytic activity auxiliary agent predecessor three Cyclopentadiene promethium Pm (C5H5)3, hydration three acetic acid terbium C6H11O7Tb, trifluoromethayl sulfonic acid thulium (III) C3F9O9S3Tm, carbonic acid lutetium water Compound C3H2Lu2O10Rare-earth chemicals, catalytic active center component predecessor normal transition metallo-organic compound Portugal Grape saccharic acid cobalt C12H22O14Co, zinc lactate C6H10O6Zn and two thiocyanatos silver(I)Sour potassium K [Ag (SCN)2], chlordene osmium dipotassium K2OsCl6Precious metal chemical complex, in emulsifying agent hexadecyldimethyl benzyl ammonium(2- hydroxyls)Ethyl ammonium chloride [C16H33N(CH3)2CH2CH2 (OH)]+Cl-Hydro-thermal reaction is carried out under, 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 hexadecyldimethyl benzyl ammonium(2- hydroxyls)Ethyl ammonium chloride makes reaction solution form quasi-stationary emulsion to prevent Separation of solid and liquid, sedimentation, while to the further surface active of porous carrier, by certain temperature, the hydro-thermal reaction of time, drying Obtain the fine silt thing of Uniform Doped;The fine silt thing of Uniform Doped is in Muffle furnace, through high temperature sintering, and organic matter therein is complete Full carbonization further enhances the microcellular structure of porous carrier, obtains porous carrier supported rare earth metal oxide, transition metal The ozone Heterogeneous oxidation solid catalyst of oxide and the catalytic active center of noble metal formation, improves the antitoxin of catalyst Property and catalytic activity.
Relative to art methods, outstanding feature of the present invention is that activated carbon, carnallite, inclined hydrogen-oxygen are used in technology of preparing Change aluminium, phosphorite, shepardite, serpentinite porous material and make carrier, due to lithium hypochlorite LiClO and double (acetylacetone,2,4-pentanedione) berylliums C10H14BeO4Reaming effect, diethyl maleate base is double(Chlorination dodecyl dimethyl ammonium)C36H72N2 +O4Cl2 -, hexadecane Base dimethyl(2- hydroxyls)Ethyl ammonium chloride [C16H33N(CH3)2CH2CH2(OH)]+Cl-To being interconnected and surface work for duct Change is acted on;Rare-earth chemicals, normal transition metallo-organic compound and precious metal chemical complex are made by hydro-thermal reaction Reach Uniform Doped and be attached in carrier surface and duct, high temperature sintering makes organic matter carbonization strengthen and form multilayer Secondary microcellular structure, the multi-element metal of porous carrier supported rare earth metal oxide, transition metal oxide and noble metal formation Catalytic active center is combined more firm with porous carrier, and the ozone Heterogeneous oxidation solid catalyst of preparation has stronger suction Attached property, the cooperative effect of multi-element metal, the noble metal of particularly doping have stability and high activity, can suppress metal catalytic Liquating out for active component, improves 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 activated carbons of 400 mesh standard sieves, 3.75g carnallites, the inclined aluminium hydroxides of 4.75g, 5.75g phosphorites, 6.75g shepardites, The weight of 7.75g serpentinites, 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 diethyl maleates base is added double(Chlorination dimethyl Base ammonium)The aqueous solution of 100ml deionized waters is dissolved in, the weight concentration of the aqueous solution is 3.1%, is uniformly mixed, maleic acid two Ethoxycarbonyl is double(Chlorination dodecyl dimethyl ammonium)(3.25g):Reaming modified support(31g )=1:9.5;Control ultrasonic power close Spend for 0.4 W/m3, ultrasonic frequency 21kHz, 41 DEG C of temperature, sonic oscillation 2.2h;It is after the completion of ultrasonic activation, ultrasonic wave is anti- Answer the ultrasonic surface activated carrier mixed liquor in device to be transferred in 500ml hydrothermal reaction kettles, add by 2.1g boraxs, 3.05g Potassium sulfate, the cyclopentadiene promethiums of 1.6g tri-, 2.05g are hydrated three acetic acid terbiums, 2.6g trifluoromethayl sulfonic acids thulium (III), 3.05g carbonic acid lutetiums Hydrate, 5.05g cobalt edetates, 6.1g zinc lactates, the thiocyanatos of 2.05g bis- silver(I)Sour potassium, 3.1g chlordene osmiums dipotassium, 3.05g hexadecyldimethyl benzyl ammonium(2- hydroxyls)The aqueous solution that ethyl ammonium chloride and 50ml deionized waters are prepared, the weight of the aqueous solution It is 40.3%, the weight of the aqueous solution to measure concentration: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 Interior, 620 DEG C, calcination 3.2h after cooling down, 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 activated carbons of 400 mesh standard sieves, 1.65g carnallites, the inclined aluminium hydroxides of 1.85g, 2.05g phosphorites, 2.25g shepardites, The weight of 2.45g serpentinites, 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 diethyl maleates base is added double(Chlorination 12 Alkyl dimethyl ammonium)The aqueous solution of 26ml deionized waters is dissolved in, the weight concentration of the aqueous solution is 7.8%, is uniformly mixed, Diethyl maleate base is double(Chlorination dodecyl dimethyl ammonium)(2.2g):Reaming modified support(11.5g )=1:5.2;Control Ultrasonic power density is 0.7 W/m3, ultrasonic frequency 29kHz, 54 DEG C of temperature, sonic oscillation 4.7h;After the completion of ultrasonic activation, Ultrasonic surface activated carrier mixed liquor in ultrasound reactor is transferred in 100ml hydrothermal reaction kettles, added by 0.78g Borax, 0.97g potassium sulfates, the cyclopentadiene promethiums of 0.58g tri-, 0.67g are hydrated three acetic acid terbiums, 0.78g trifluoromethayl sulfonic acid thuliums (III), 0.87g carbonic acid lutetium hydrate, 1.48g cobalt edetates, 1.77g zinc lactates, the thiocyanatos of 0.68g bis- silver(I)Acid Potassium, 0.87g chlordene osmiums dipotassium, 1.98g hexadecyldimethyl benzyl ammoniums(2- hydroxyls)What ethyl ammonium chloride 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 for 105 DEG C Thing;Fine silt thing is in Muffle furnace, 930 DEG C, calcination 7.5h, and after cooling down, the ozone that can obtain fine particle shape is heterogeneous Oxidized solid catalyst.
Comparative example 1:It is double that preparation process is not added with lithium hypochlorite, double (acetylacetone,2,4-pentanedione) berylliums, diethyl maleate base(Chlorination ten Dialkyl dimethyl ammonium), hexadecyldimethyl benzyl ammonium(2- hydroxyls)Outside ethyl ammonium chloride, borax and potassium sulfate, whole preparation process, Preparation condition is 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
Project Average pore size (nm) Pore volume (cm3/g) BET is than surface (m2/g)
Embodiment 1 4.706 0.6200 761.81
Embodiment 2 4.233 0.5744 645.85
Comparative example 1 2.454 0.3489 455.49

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 activated carbon, carnallite, inclined aluminium hydroxide, phosphorite, shepardite, serpentinite, by weight, activated carbon:Carnallite: Inclined aluminium hydroxide:Phosphorite:Shepardite:The weight ratio of serpentinite=(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 maleic acid diethyl Ester group is double(Chlorination dodecyl dimethyl ammonium), by weight, component C:Weight ratio=1 of reaming modified support:(5~10), D components are by composite mineralizer borax, potassium sulfate, the cyclopentadiene promethium of catalytic activity auxiliary agent predecessor three, three acetic acid terbiums of hydration, trifluoro Loprazolam thulium (III), carbonic acid lutetium hydrate Rare-earth chemicals, catalytic active center predecessor normal transition metal Organic compound cobalt edetate, zinc lactate and the thiocyanato of precious metal chemical complex two silver(I)Sour potassium, chlordene osmium dipotassium, breast Agent hexadecyldimethyl benzyl ammonium(2- hydroxyls)Ethyl ammonium chloride is constituted, by weight, borax:Potassium sulfate:Three cyclopentadiene promethiums:Water Close three acetic acid terbiums:Trifluoromethayl sulfonic acid thulium (III):Carbonic acid lutetium hydrate:Cobalt edetate:Zinc lactate:Two thiocyanatos silver (I)Sour potassium:Chlordene osmium dipotassium:, hexadecyldimethyl benzyl ammonium(2- hydroxyls)The weight ratio of ethyl ammonium chloride=(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 activated carbon, carnallite, inclined aluminium hydroxide, phosphorite, shepardite, serpentinite group according to claim 1 Into activated carbon, carnallite, inclined aluminium hydroxide, phosphorite, shepardite, serpentinite are crushed respectively, deionized water washing drying Remove after moisture, sieved through standard screen, it is 0.0370mm~0.0750mm to control particle diameter.
CN201710274823.7A 2017-04-25 2017-04-25 The preparation method of ozone Heterogeneous oxidation solid catalyst Withdrawn CN107020118A (en)

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