CN107096534A - 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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CN107096534A
CN107096534A CN201710276682.2A CN201710276682A CN107096534A CN 107096534 A CN107096534 A CN 107096534A CN 201710276682 A CN201710276682 A CN 201710276682A CN 107096534 A CN107096534 A CN 107096534A
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component
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solid catalyst
ozone heterogeneous
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朱明�
夏梦琦
石雨晴
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Sichuan Normal University
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
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    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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    • C02F2305/00Use of specific compounds during water treatment
    • C02F2305/02Specific form of oxidant

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, illite, raphite, shepardite and serpentinite make carrier after lithium hypochlorite and double (acetylacetone,2,4-pentanedione) beryllium reamings, add surfactant 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 three (hexafluoroacetylacetone) yttrium (III) dihydrate, Lanthanum Stearate, three (3 trifluoroacetyl group D camphors) praseodymiums (III), three cyclopentadiene promethiums, catalytic active center predecessor titanocenes ring substituted salicylic acid complex, L lucid asparagus amino acid molybdenums and chlordene osmium dipotassium, the ammino platinum of dichloro two, hydro-thermal reaction is carried out under the effect of emulsifying agent oleamide oxypropyl trimethyl sulfate methyl ammonium, drying is removed after moisture, calcination obtains ozone Heterogeneous oxidation solid catalyst in Muffle furnace.

Description

The preparation method of ozone Heterogeneous oxidation solid catalyst
Technical field
The present invention relates to a kind of preparation method of ozone Heterogeneous oxidation solid catalyst, category environmental protection and chemical catalyst skill Art field.
Background technology
Ozonation technology using ozone oxidation ability it is strong the characteristics of, can be by many organic pollution oxidation Decompositions, extensively For wastewater treatment.Catalytic ozonation technology is divided into ozone homogeneous catalytic oxidation and ozone heterogeneous catalytic oxidation, and ozone is equal Phase catalysis oxidation has that the more difficult separation and recovery of catalyst is reused, ozone utilization rate is low causes water process operating cost higher, Organic pollutant removal rate is relatively low simultaneously and easily causing secondary pollution of water is limited to its application;Ozone heterogeneous catalysis oxygen There is change technology catalyst to be easily isolated and recycled and reusable, ozone utilization rate is high, organic pollutant removal rate is higher, drop Low water process operating cost and receive significant attention its application the advantages of do not result in secondary pollution.Ozone heterogeneous catalysis It is to reach local organic matter enrichment by catalyst surface absorption organic matter that oxidation of organic compounds, which is decomposed, while ozone molecule absorption exists The hydroxyl radical free radical that catalyst surface produces high activity under catalyst action decomposes organic matter.Ozone heterogeneous catalytic oxidation Handle in waste water technology, core technology is the preparation of ozone Heterogeneous oxidation solid catalyst.
Ozone Heterogeneous oxidation solid catalyst is generally made up of carrier, activated centre and auxiliary agent.Due to being polluted in waste water Species are various, complex chemical composition feature, can produce harmful effect to performance such as absorption, the mithridatism of catalyst. Prepare that the carrier structure that ozone Heterogeneous oxidation solid catalyst uses is more single at present, adsorptivity is relatively low;Activated centre is universal Using normal transition metal salt, mithridatism is poor;Preparation method mainly has infusion process, the precipitation method, mixing method and collosol and gel etc. Method attachment activity center and adjuvant component are easily liquated out in carrier surface, activated centre and adjuvant component, cause catalyst Easily lose catalytic activity.For exist in current ozone Heterogeneous oxidation solid catalyst preparation method Catalyst Adsorption compared with Low, mithridatism is poor and easily loses catalytic activity problem, and exploitation is strengthened using multicomponent porous carrier through reaming, surface active Catalyst Adsorption, makees catalytic activity auxiliary agent predecessor, normal transition Organometallic using Rare-earth chemicals and closes Thing and precious metal chemical complex are made catalytic active center predecessor and contained with multicomponent porous carrier through hydro-thermal reaction, high temperature sintering preparation The ozone Heterogeneous oxidation solid catalyst of multi-element metal has to improve the preparation method of catalyst mithridatism and catalytic activity Larger environmental benefit and higher practical value.
The content of the invention
For existing in current ozone Heterogeneous oxidation solid catalyst preparation method, Catalyst Adsorption is relatively low, mithridatism Poor to lose catalytic activity problem with easy, exploitation strengthens catalyst using multicomponent porous carrier through reaming, surface active Adsorptivity, catalytic activity auxiliary agent predecessor, normal transition metallo-organic compound and expensive are made using Rare-earth chemicals Metallic compound is made catalytic active center predecessor and prepared with multicomponent porous carrier through hydro-thermal reaction, high temperature sintering containing polynary gold The ozone Heterogeneous oxidation solid catalyst of category to improve the preparation method of catalyst mithridatism and catalytic activity, it is characterized in that Component A can be added in closed reactor and deionized water stirring prepares the aqueous solution, the weight concentration for control component A is 2%~6%, After the completion of prepared by solution, B component is added under agitation, 35 DEG C~50 DEG C are warming up to, continues stirring reaction 3h~6h, is filtered, instead Product is answered to obtain reaming modified support after 102 DEG C~106 DEG C dry constant weights;Reaming modified support puts into ultrasound reactor, The aqueous solution prepared by component C and deionized water is added, the weight concentration of component C is 3%~8%, is uniformly mixed, and control is super Sound power density is 0.3~0.8W/m3, frequency 20kHz~30kHz, 40 DEG C~55 DEG C, sonic oscillation 2h~5h obtains ultrasound Surface active carrier mixed liquor;Ultrasonic surface activated carrier mixed liquor is transferred in hydrothermal reaction kettle, add D components and go from The aqueous solution that sub- water is prepared, the weight concentration of D components is 40%~55%, by weight, D component deionized water solutions:Ultrasonic table Weight ratio=1 of face activated carrier mixed liquor:(1.5~2), control 120 DEG C~180 DEG C of temperature, the hydro-thermal reaction time be 8h~ 16h, then dries to obtain fine particle;Fine particle is in Muffle furnace, 600 DEG C~950 DEG C, and calcination 3h~8h obtains ozone non- Homogeneous oxidizing solid catalyst.The component A is made up of lithium hypochlorite, double (acetylacetone,2,4-pentanedione) berylliums, by weight, lithium hypochlorite: Weight ratio=1 of double (acetylacetone,2,4-pentanedione) berylliums:(1~1.6), B component is by medical stone, wollastonite, illite, raphite, water magnesium Stone, serpentinite composition, by weight, medical stone:Wollastonite:Illite:Raphite:Shepardite:The weight ratio of serpentinite= (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 octadecyl trimethyl ammonium chloride, by weight, component C:The weight of reaming modified support The ratio between=1:(5~10), D components are by composite mineralizer borax, the potassium sulfate, (hexafluoroacetylacetonate of catalytic activity auxiliary agent predecessor three Ketone) yttrium (III) dihydrate, Lanthanum Stearate, three (3- trifluoroacetyl group-D- camphors) praseodymiums (III), three cyclopentadiene promethium rare earths Metallo-organic compound, catalytic active center predecessor normal transition metallo-organic compound titanocenes ring substituted salicylic acid coordinates Thing, L- lucid asparagus amino acid molybdenums and precious metal chemical complex chlordene osmium dipotassium, the ammino platinum of dichloro two, emulsifying agent oleamide propyl group front three Base sulfate methyl ammonium is constituted, by weight, borax:Potassium sulfate:Three (hexafluoroacetylacetone) yttrium (III) dihydrates:Stearic acid Lanthanum:Three (3- trifluoroacetyl group-D- camphors) praseodymiums (III):Three cyclopentadiene promethiums:Titanocenes ring substituted salicylic acid complex:L- days Door winter amino acid molybdenum:Chlordene osmium dipotassium:The ammino platinum of dichloro two:The weight ratio of oleamide oxypropyl trimethyl 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).Medical stone, wollastonite, illite, raphite, shepardite, the serpentinite of the B component are crushed respectively, deionization Water washing, which is dried, to be removed after moisture, and -200 mesh ,+400 mesh sieves point are carried out through standard screen, and it is 0.0370mm~0.0750 to control particle diameter mm。
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, illite, raphite, shepardite and serpentinite 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 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 three (hexafluoroacetylacetone) yttrium (III) Dihydrate C15H3F18O6Y·2H2O, Lanthanum Stearate La (C18H35O2)3, three (3- trifluoroacetyl group-D- camphors) praseodymiums (III) C36H42F9O6Pr, three cyclopentadiene promethium Pm (C5H5)3Rare-earth chemicals, catalytic active center component predecessor is common Transition metal organometallic compound titanocenes ring substituted salicylic acid complex (C10H10)Ti(C7H4O3), L- lucid asparagus amino acid molybdenums Mo [OOCCH2CH(NH2)COO]3(H2O)3With chlordene osmium dipotassium K2OsCl6, the ammino platinum Pt (NH of dichloro two3)2Cl2Noble metal chemical combination Thing, in emulsifying agent oleamide oxypropyl trimethyl sulfate methyl ammonium [C17H33COCH2CH2CH2N(CH3)3]+CH3SO4 -Enter under effect Water-filling thermal response, mineralizer accelerates diffusion, activates reactant lattice, promotes the progress of solid phase reaction, ultrasonic surface Activated carrier and Rare-earth chemicals, normal transition metallo-organic compound, precious metal chemical complex Uniform Doped, emulsification Agent oleamide oxypropyl trimethyl sulfate methyl ammonium make reaction solution formed quasi-stationary emulsion prevent separation of solid and liquid, sedimentation, simultaneously To the further surface active of porous carrier, by the way that in certain temperature, the hydro-thermal reaction of time, drying obtains the fine powder of Uniform Doped Grain thing;The fine silt thing of Uniform Doped is in Muffle furnace, through high temperature sintering, and organic matter carbonization therein is further enhanced The microcellular structure of porous carrier, obtains porous carrier supported rare earth metal oxide, transition metal oxide and noble metal and is formed Catalytic active center ozone Heterogeneous oxidation solid catalyst, improve the mithridatism and catalytic activity of catalyst.
Relative to art methods, outstanding feature of the present invention is that medical stone, wollastonite, Erie are used in technology of preparing Stone, raphite, shepardite, serpentinite porous material make carrier, due to lithium hypochlorite LiClO and double (acetylacetone,2,4-pentanedione) berylliums C10H14BeO4Reaming effect, octadecyl trimethyl ammonium chloride [C18H37N(CH3)3]+Cl-, oleamide oxypropyl trimethyl sulfuric acid Ammonium methyl [C17H33COCH2CH2CH2N(CH3)3]+CH3SO4 -To being interconnected and surface activation for duct;It is anti-by hydro-thermal Rare-earth chemicals, normal transition metallo-organic compound and precious metal chemical complex should be made to reach Uniform Doped and adhere to In in carrier surface and duct, high temperature sintering makes organic matter carbonization strengthen and form multi-level microcellular structure, porous Carrier loaded rare-earth oxide, transition metal oxide and noble metal formation multi-element metal catalytic active center with it is porous Carrier combination is more firm, and the ozone Heterogeneous oxidation solid catalyst of preparation has stronger adsorptivity, the association of multi-element metal Same effect, stability and high activity that particularly doped precious metal has, can suppress liquating out for metal catalytic activity component, The mithridatism and catalytic activity of catalyst are improved, 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 are added to volume for 500ml Can be uniformly mixed in closed reactor, the weight concentration of the aqueous solution is 2.1%, lithium hypochlorite:Double (acetylacetone,2,4-pentanedione) berylliums Weight ratio=1:1.2;Add deionized water wash to it is neutral, 103 DEG C dry and remove the mesh of -200 mesh of sieving after moisture~+400 The 2.75g medical stones of standard screen, 3.75g wollastonites, 4.75g illites, 5.75g raphites, 6.75g shepardites, 7.75g snakes The weight of line rock, 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, obtain reaming modified support 31g after continuing stirring reaction 3.2h, filtering, 103 DEG C of dry constant weights;In 500ml ultrasonic responses In device, reaming modified support 31g is put into, the water that 3.25g octadecyl trimethyl ammonium chlorides are dissolved in 100ml deionized waters is added Solution, the weight concentration of the aqueous solution is 3.1%, is uniformly mixed, octadecyl trimethyl ammonium chloride(3.25g):Reaming changes Property carrier(31g )=1:9.5;It is 0.4 W/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- (hexafluoroacetylacetone) yttrium (III) dihydrate, 2.05g Lanthanum Stearates, 2.6g tri- (3- trifluoroacetyl group-D- camphors) praseodymium (III), the cyclopentadiene promethiums of 3.05g tri-, the cyclopentadienyls of 5.05g bis- Titanacycle substituted salicylic acid complex, 6.1gL- lucid asparagus amino acid molybdenum, 2.05g chlordene osmiums dipotassium, the ammino platinum of 3.1g dichloros two, The aqueous solution that 3.05g oleamide oxypropyl trimethyl sulfate methyl ammoniums and 50ml deionized waters are prepared, the weight concentration of the aqueous solution For 40.3%, the weight of the aqueous solution:Weight=83.8g of ultrasonic surface activated carrier mixed liquor:134.25g =1:1.6, control 125 DEG C of temperature, 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, and 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 medical stones of 400 mesh standard sieves, 1.65g wollastonites, 1.85g illites, 2.05g raphites, 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 octadecyl trimethyl ammonium chlorides is added and is dissolved in The aqueous solution of 26ml deionized waters, the weight concentration of the aqueous solution is 7.8%, is uniformly mixed, chlorination octadecyl trimethyl Ammonium(2.2g):Reaming modified support(11.5g )=1:5.2;It is 0.7 W/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, (the hexafluoro acetyl of 0.58g tri- Acetone) yttrium (III) dihydrate, 0.67g Lanthanum Stearates, 0.78g tri- (3- trifluoroacetyl group-D- camphors) praseodymium (III), 0.87g Three cyclopentadiene promethiums, 1.48g titanocenes ring substituted salicylic acids complex, 1.77gL- lucid asparagus amino acid molybdenum, 0.68g chlordene osmiums The water that dipotassium, the ammino platinum of 0.87g dichloros two, 1.98g oleamide oxypropyl trimethyl sulfate methyl ammoniums and 10ml deionized waters are prepared 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.

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, illite, raphite, shepardite, serpentinite, by weight, medical stone:Wollastonite:She Sharp stone:Raphite: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 chlorination octadecyl three Ammonium methyl, 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 three (hexafluoroacetylacetone) yttrium (III) dihydrate, Lanthanum Stearate, three (3- trifluoros Acetyl group-D- camphors) praseodymium (III), three cyclopentadiene promethium Rare-earth chemicals, the common mistake of catalytic active center predecessor Cross metallo-organic compound titanocenes ring substituted salicylic acid complex, L- lucid asparagus amino acid molybdenums and precious metal chemical complex chlordene osmium Dipotassium, the ammino platinum of dichloro two, emulsifying agent oleamide oxypropyl trimethyl sulfate methyl ammonium composition, by weight, borax:Potassium sulfate: Three (hexafluoroacetylacetone) yttrium (III) dihydrates:Lanthanum Stearate:Three (3- trifluoroacetyl group-D- camphors) praseodymiums (III):Three rings Pentadiene promethium:Titanocenes ring substituted salicylic acid complex:L- lucid asparagus amino acid molybdenums:Chlordene osmium dipotassium:The ammino platinum of dichloro two:Oil The weight ratio of amido propyl trimethyl 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).
2. B component is by medical stone, wollastonite, illite, raphite, shepardite, serpentinite group according to claim 1 Into medical stone, wollastonite, illite, raphite, shepardite, serpentinite 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.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112156767A (en) * 2020-09-15 2021-01-01 山东大学 Wollastonite loaded strontium and lanthanum solid base catalyst, and preparation method and application thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112156767A (en) * 2020-09-15 2021-01-01 山东大学 Wollastonite loaded strontium and lanthanum solid base catalyst, and preparation method and application thereof
CN112156767B (en) * 2020-09-15 2021-10-29 山东大学 Wollastonite loaded strontium and lanthanum solid base catalyst, and preparation method and application thereof

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