CN107029717A - 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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CN107029717A
CN107029717A CN201710275908.7A CN201710275908A CN107029717A CN 107029717 A CN107029717 A CN 107029717A CN 201710275908 A CN201710275908 A CN 201710275908A CN 107029717 A CN107029717 A CN 107029717A
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solid catalyst
stone
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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.With medical stone, wollastonite, bentonite, polyhalite, talcum and sal soda masonry carrier are after lithium hypochlorite and double (acetylacetone,2,4-pentanedione) beryllium reamings, add octadecyl trimethyl ammonium chloride and activation process is carried out under ul-trasonic irradiation, then carrier in hydrothermal reaction kettle with composite mineralizer borax and potassium sulfate, catalytic activity auxiliary agent predecessor isopropyl scandium oxide (III), three (6, 6, 7, 7, 8, 8, 8 seven fluorine 2, 2 dimethyl 3, 5 octene diketone) dysprosium (III), three (trifluoromethanesulfonimide) ytterbiums, carbonic acid lutetium hydrate, catalytic active center predecessor titanocenes ring substituted salicylic acid complex, L lucid asparagus amino acid molybdenums and two thiocyanatos silver(I)Sour potassium, Tris(2,2'- bipyridyl) ruthenium (II) chloride hexahydrate, carry out hydro-thermal reaction under the effect of emulsifying agent hexatriacontane methyl ammonium, 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 by medical stone, wollastonite, bentonite, polyhalite, talcum, Sal soda stone is constituted, by weight, medical stone:Wollastonite:Bentonite:Polyhalite:Talcum:The weight ratio of sal soda stone=(5~ 15):(7~17):(9~19):(11~21):(13~23):(15~25), by weight, component A:The weight ratio of B component =1:(10~20), component C is octadecyl trimethyl ammonium chloride, by weight, component C:The weight ratio of reaming modified support =1:(5~10), D components are by composite mineralizer borax, potassium sulfate, catalytic activity auxiliary agent predecessor isopropyl scandium oxide (III), three (the fluoro- 2,2- dimethyl -3,5- octenes diketone of 6,6,7,7,8,8,8- seven) dysprosium (III), three (trifluoromethanesulfonimide) ytterbiums, Carbonic acid lutetium hydrate Rare-earth chemicals, catalytic active center predecessor normal transition metallo-organic compound titanocenes Ring substituted salicylic acid complex, L- lucid asparagus amino acid molybdenums and the thiocyanato of precious metal chemical complex two silver(I)Sour potassium, three pyrroles Pyridine ruthenic chloride hexahydrate, three-cetylmethylammonium chloride of emulsifying agent composition, by weight, borax:Potassium sulfate:Isopropyl oxygen Change scandium (III):Three (the fluoro- 2,2- dimethyl -3,5- octenes diketone of 6,6,7,7,8,8,8- seven) dysprosiums (III):Three (fluoroforms Sulfimide) ytterbium:Carbonic acid lutetium hydrate:Titanocenes ring substituted salicylic acid complex:L- lucid asparagus amino acid molybdenums:Two thiocyanate radicals Close silver(I)Sour potassium:Tris(2,2'- bipyridyl) ruthenium (II) chloride hexahydrate:The weight ratio of three-cetylmethylammonium chloride=(4~8):(6 ~10):(3~6):(4~7):(5~8):(6~9):(10~15):(12~18):(4~7):(6~9):(6~20).Institute Medical stone, wollastonite, bentonite, polyhalite, talcum, the sal soda stone for stating B component are crushed respectively, deionized water washing drying Remove 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 Medical stone, wollastonite, bentonite, polyhalite, talcum and sal soda stone porous material carrier, in certain temperature and stirring condition Under, the small Be of aqueous solution Ionic Radius2+(0.31Å)、Li+(0.60Å)Displace part ion radius in porous material big Ca2+(0.99Å)、K+(1.33Å)、Ba2+(1.35Å)Plasma, the aperture of porous material carrier becomes big, surface roughness increase, Filtering, dries the reaming modified support input ultrasound reactor after constant weight, adds octadecyl trimethyl ammonium chloride [C18H37N(CH3)3]+Cl- The aqueous solution, control ultrasonic power density, ultrasonic frequency, temperature and sonic oscillation time, in ultrasound Under ripple cavitation, octadecyl trimethyl ammonium chloride [C18H37N(CH3)3]+Cl- It is easy to escape into reaming from the aqueous solution and changes Property carrier duct or be attached to reaming modified support surface, be beneficial to being interconnected and carrier surface activation for carrier duct, increase Strong adsorptivity;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 isopropyl scandium oxide (III) C9H21O3Sc、 Three (the fluoro- 2,2- dimethyl -3,5- octenes diketone of 6,6,7,7,8,8,8- seven) dysprosium (III) C30H30DyF21O6, three (fluoroforms Sulfimide) ytterbium [(CF3SO2)2N]3Yb, carbonic acid lutetium hydrate C3H2Lu2O10In Rare-earth chemicals, catalytic activity Heart component predecessor normal transition metallo-organic compound titanocenes ring substituted salicylic acid complex (C10H10)Ti(C7H4O3)、L- Lucid asparagus amino acid molybdenum Mo [OOCCH2CH(NH2)COO]3(H2O)3With two thiocyanatos silver(I)Sour potassium K [Ag (SCN)2], three Bipyridyl ruthenic chloride hexahydrate (C10H8N2)3Cl2Ru·(H2O)6Precious metal chemical complex, in emulsifying agent three-cetyl methyl Ammonium chloride [(C16H33)3NCH3]+Cl- Effect is lower to carry out hydro-thermal reaction, and mineralizer accelerates diffusion, reactant lattice is lived Change, promote the progress of solid phase reaction, ultrasonic surface activated carrier and Rare-earth chemicals, normal transition metal are organic Compound, precious metal chemical complex Uniform Doped, three-cetylmethylammonium chloride of emulsifying agent make reaction solution form quasi-stationary breast Liquid prevents separation of solid and liquid, sedimentation, while to the further surface active of porous carrier, by certain temperature, the hydro-thermal of time Reaction, drying obtains the fine silt thing of Uniform Doped;The fine silt thing of Uniform Doped is in Muffle furnace, through high temperature sintering, wherein Organic matter carbonization further enhance the microcellular structure of porous carrier, obtain the oxidation of porous carrier supported rare earth metal The ozone Heterogeneous oxidation solid catalyst of the catalytic active center of thing, transition metal oxide and noble metal formation, is improved The mithridatism and catalytic activity of catalyst.
Relative to art methods, outstanding feature of the present invention is that medical stone, wollastonite, swelling are used in technology of preparing Soil, polyhalite, talcum, sal soda stone porous material make carrier, due to lithium hypochlorite LiClO and double (acetylacetone,2,4-pentanedione) beryllium C10H14BeO4 Reaming effect, octadecyl trimethyl ammonium chloride [C18H37N(CH3)3]+Cl-, three-cetylmethylammonium chloride [(C16H33)3NCH3]+Cl- To being interconnected and surface activation for duct;Rare earth metal is set to organise by hydro-thermal reaction Compound, normal transition metallo-organic compound and precious metal chemical complex reach Uniform Doped and are attached to carrier surface and duct Interior, high temperature sintering makes organic matter carbonization strengthen and form multi-level microcellular structure, porous carrier supported rare earth metal The multi-element metal catalytic active center of oxide, transition metal oxide and noble metal formation is combined more firm with porous carrier Gu, the ozone Heterogeneous oxidation solid catalyst of preparation has a stronger adsorptivity, the cooperative effect of multi-element metal, particularly mixes Miscellaneous noble metal has stability and high activity, can suppress liquating out for metal catalytic activity component, improve catalyst Mithridatism and catalytic activity, 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~+ 2.75g medical stones, 3.75g wollastonites, 4.75g bentonites, 5.75g polyhalites, 6.75g talcums, the 7.75g of 400 mesh standard sieves The weight of sal soda stone, lithium hypochlorite and double (acetylacetone,2,4-pentanedione) berylliums(3g):The weight of porous material(31.5g)=1:10.5, it is warming up to 36 DEG C, reaming modified support 31g is obtained after continuing stirring reaction 3.2h, filtering, 103 DEG C of dry constant weights;It is anti-in 500ml ultrasonic waves Answer in device, put into reaming modified support 31g, add 3.25g octadecyl trimethyl ammonium chlorides and be dissolved in 100ml deionized waters The aqueous solution, the weight concentration of the aqueous solution is 3.1%, is uniformly mixed, octadecyl trimethyl ammonium chloride(3.25g):Reaming Modified support(31g )=1:9.5;It is 0.4 W/m to control ultrasonic power density3, ultrasonic frequency 21kHz, 41 DEG C of temperature, ultrasound Vibrate 2.2h;After the completion of ultrasonic activation, the ultrasonic surface activated carrier mixed liquor in ultrasound reactor is transferred to 500ml water In thermal response kettle, add by 2.1g boraxs, 3.05g potassium sulfates, 1.6g isopropyls scandium oxide (III), 2.05g tri- (6,6,7,7, The fluoro- 2,2- dimethyl -3,5- octenes diketone of 8,8,8- seven) dysprosium (III), 2.6g tri- (trifluoromethanesulfonimide) ytterbium, 3.05g Carbonic acid lutetium hydrate, 5.05g titanocenes ring substituted salicylic acids complex, 6.1gL- lucid asparagus amino acid molybdenum, the sulphur cyanogen of 2.05g bis- Acid group closes silver(I)Sour potassium, 3.1g Tris(2,2'- bipyridyl) ruthenium (II) chlorides hexahydrate, tri--cetylmethylammonium chlorides of 3.05g and 50ml The aqueous solution that deionized water is prepared, the weight concentration of the aqueous solution is 40.3%, the weight of the aqueous solution:Ultrasonic surface activation is carried Weight=83.8g of body mixed liquor:134.25g =1:1.6,125 DEG C of temperature is controlled, the hydro-thermal reaction time is 8.3h, then 105 DEG C dry to obtain fine silt thing;Fine silt thing is in Muffle furnace, 620 DEG C, calcination 3.2h, after cooling down, can obtain fine particle The ozone Heterogeneous oxidation solid catalyst of 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~+ 1.45g medical stones, 1.65g wollastonites, 1.85g bentonites, 2.05g polyhalites, 2.25g talcums, the 2.45g of 400 mesh standard sieves The weight of sal soda stone, lithium hypochlorite and double (acetylacetone,2,4-pentanedione) berylliums(0.6g):The weight of porous material(11.7g)=1:19.5, heating To 48 DEG C, reaming modified support 11.5g is obtained after continuing stirring reaction 5.8h, filtering, 105 DEG C of dry constant weights;In 100ml ultrasounds In ripple reactor, reaming modified support 11.5g is put into, 2.2g octadecyl trimethyl ammonium chlorides is added and is dissolved in 26ml deionizations The aqueous solution of water, the weight concentration of the aqueous solution is 7.8%, is uniformly mixed, octadecyl trimethyl ammonium chloride(2.2g): Reaming modified support(11.5g )=1:5.2;It is 0.7 W/m to control ultrasonic power density3, ultrasonic frequency 29kHz, temperature 54 DEG C, sonic oscillation 4.7h;After the completion of ultrasonic activation, the ultrasonic surface activated carrier mixed liquor in ultrasound reactor is transferred to In 100ml hydrothermal reaction kettles, add by 0.78g boraxs, 0.97g potassium sulfates, 0.58g isopropyls scandium oxide (III), 0.67g tri- (fluoroform sulphonyl is sub- by (the fluoro- 2,2- dimethyl -3,5- octenes diketone of 6,6,7,7,8,8,8- seven) dysprosium (III), 0.78g tri- Amine) ytterbium, 0.87g carbonic acid lutetiums hydrate, 1.48g titanocenes ring substituted salicylic acids complex, 1.77gL- lucid asparagus amino acid Molybdenum, the thiocyanatos of 0.68g bis- silver(I)Sour potassium, 0.87g Tris(2,2'- bipyridyl) ruthenium (II) chlorides hexahydrate, 1.98g tri--cetyl first The aqueous solution that ammonium chloride 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 =1:1.9,175 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 Divide and be made up of medical stone, wollastonite, bentonite, polyhalite, talcum, sal soda stone, by weight, medical stone:Wollastonite:Swelling Soil:Polyhalite:Talcum:The weight ratio of sal soda stone=(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 octadecyl trimethyl ammonium chloride, By weight, component C:Weight ratio=1 of reaming modified support:(5~10), D components by composite mineralizer borax, potassium sulfate, Catalytic activity auxiliary agent predecessor isopropyl scandium oxide (III), three (the fluoro- 2,2- dimethyl -3,5- octenes of 6,6,7,7,8,8,8- seven Diketone) dysprosium (III), three (trifluoromethanesulfonimide) ytterbiums, carbonic acid lutetium hydrate Rare-earth chemicals, in catalytic activity Heart predecessor normal transition metallo-organic compound titanocenes ring substituted salicylic acid complex, L- lucid asparagus amino acid molybdenums and your gold Belong to the thiocyanato of compound two silver(I)Sour potassium, Tris(2,2'- bipyridyl) ruthenium (II) chloride hexahydrate, emulsifying agent three-cetyl methyl chloride Change ammonium composition, by weight, borax:Potassium sulfate:Isopropyl scandium oxide (III):Three (the fluoro- 2,2- diformazans of 6,6,7,7,8,8,8- seven Base -3,5- octenes diketone) dysprosium (III):Three (trifluoromethanesulfonimide) ytterbiums:Carbonic acid lutetium hydrate:Titanocenes ring replaces bigcatkin willow Sour complex:L- lucid asparagus amino acid molybdenums:Two thiocyanatos silver(I)Sour potassium:Tris(2,2'- bipyridyl) ruthenium (II) chloride hexahydrate:Three-ten The weight ratio of six alkyl methyl ammonium chlorides=(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 made up of medical stone, wollastonite, bentonite, polyhalite, talcum, sal soda stone according to claim 1, wheat Meal stone, wollastonite, bentonite, polyhalite, talcum, sal soda stone are crushed respectively, and deionized water washing, which is dried, to be removed after moisture, Sieved through standard screen, it is 0.0370mm~0.0750mm to control particle diameter.
CN201710275908.7A 2017-04-25 2017-04-25 The preparation method of ozone Heterogeneous oxidation solid catalyst Withdrawn CN107029717A (en)

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