CN106732582A - Meso-porous nano CeO2Hollow ball supported catalyst and its preparation method and application - Google Patents
Meso-porous nano CeO2Hollow ball supported catalyst and its preparation method and application Download PDFInfo
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- CN106732582A CN106732582A CN201611119937.6A CN201611119937A CN106732582A CN 106732582 A CN106732582 A CN 106732582A CN 201611119937 A CN201611119937 A CN 201611119937A CN 106732582 A CN106732582 A CN 106732582A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims abstract description 21
- 230000003197 catalytic effect Effects 0.000 claims abstract description 12
- 238000009279 wet oxidation reaction Methods 0.000 claims abstract description 9
- 239000011148 porous material Substances 0.000 claims abstract description 6
- 239000002351 wastewater Substances 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000012153 distilled water Substances 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 229910019891 RuCl3 Inorganic materials 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 13
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000000047 product Substances 0.000 description 6
- 239000002077 nanosphere Substances 0.000 description 5
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 5
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 4
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000013019 agitation Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 239000012456 homogeneous solution Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 239000002638 heterogeneous catalyst Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000002390 rotary evaporation Methods 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- YBCAZPLXEGKKFM-UHFFFAOYSA-K ruthenium(iii) chloride Chemical compound [Cl-].[Cl-].[Cl-].[Ru+3] YBCAZPLXEGKKFM-UHFFFAOYSA-K 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910009112 xH2O Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/63—Platinum group metals with rare earths or actinides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/51—Spheres
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of meso-porous nano CeO2Hollow ball supported catalyst, the catalyst is with nano Ce O2Hollow ball is carrier, loads the Ru relative to 0.3~1wt% of vehicle weight；Nano Ce O2The specific surface area of hollow ball is 50~150 m2/ g, average pore size is 5~10nm, and pore volume is 0.15~0.4 cm3/ g, particle diameter is 200~400nm.Preparation method the invention also discloses the catalyst and the application in the treatment of high concentrated organic wastewater catalytic wet oxidation.Bullion content is low in catalyst of the present invention, reduces the preparation cost of catalyst, economic and environment-friendly, and suitable industry is amplified.
Description
Technical field
The present invention relates to a kind of meso-porous nano CeO2Hollow ball supported catalyst and preparation method thereof and organic in high concentration
Application in the treatment of waste water catalytic wet oxidation, belongs to water technology and environment functional material field.
Background technology
Wet raw noodles are a kind of effective technologies for the treatment of high concentration hard-degraded organic waste water generally acknowledged at present, with
The advantages of its equipment is small, the reaction time is short, secondary pollution is few and receive much concern, have a good application prospect.Catalytic wet oxygen
Catalyst is crucial, and the research as catalyst the advantages of heterogeneous catalyst active high, easily separated, good stability in change
Emphasis.The kind of carrier used in heterogeneous catalyst is various, and rare earth element is conducive to improving the activity of catalyst as auxiliary agent
There are many reports（CN 102451682 B, CN1463925A, CN101045204A）, cerium oxide is used in the B of CN 103570120
Changed red mud O3 catalytic oxidation low concentration, high toxicity PPCPs class organic contamination effects are preferable.ZL 200510011119.X are adopted
CeO is obtained with coprecipitation2Small molecule is calculated as the noble metal of carrier loaded 1~3wt% have good degradation effect.
In recent years due to CeO2The excellent performance of nano-hollow ball specific surface area for example high, big duct and storage and release
Put the superperformance of oxygen so that CeO2The range of application of nano-hollow ball is more and more wider, and increasing scholar passes through various sides
Method prepares CeO2Nano-hollow ball.Jiao et al.（ Y. Jiao, F. Wang, X. Ma,Q. Tang, et al.
Micro. Meso. Mater., 2013, 176, 1.）CeO is utilized by one step hydro thermal method in the case of without hard template2Receive
Rice grain has prepared CeO2Nano-hollow ball.Liu seminars（S. Liu, M. Xie, X. Guo et al., Mater.
Lett., 2013, 105, 192.）Using FeSO4Redox property simultaneously passes through the method for etching to CeO2Nanosphere is carved
Monodispersed CeO is prepared in erosion2Nano-hollow ball.Shen et al.（G. Shen, H. Liu, Q. Wang, Z. Wang et
al., J. Nanopart. Res., 2012, 14, 954.）Make self-template using urea and also successfully made by hydro-thermal method
It is standby gone out CeO2Nano-hollow ball.
The content of the invention
It is an object of the invention to provide a kind of meso-porous nano CeO2Hollow ball supported catalyst and preparation method thereof and in height
Application in the treatment of concentration organic wastewater catalytic wet oxidation.
The present invention is with polyvinylpyrrolidone（PVP）For surfactant and using ethylene glycol and the mixed solution of distilled water
Solvent-thermal method prepare meso-porous nano CeO2Hollow ball supported catalyst, the catalyst can reduce the reaction of catalytic wet oxidation
Condition, improves the degradation efficiency of hardly degraded organic substance, so as to promote the extensive use of catalytic wet oxidation water technology.
Meso-porous nano CeO2Hollow ball supported catalyst, it is characterised in that：The catalyst is with nano Ce O2Hollow ball is load
Body, loads the Ru relative to 0.3~1wt% of vehicle weight；The nano Ce O2The specific surface area of hollow ball is 50~150 m2/ g,
Average pore size is 5~10nm, and pore volume is 0.15~0.4 cm3/ g, particle diameter is 200~400nm.
Meso-porous nano CeO as described above2The preparation method of hollow ball supported catalyst, comprises the following steps：
1）PVP is added until being completely dissolved in the mixed solution of ethylene glycol and distilled water, is subsequently adding Ce (NO3)3Solid, it is complete
In 160~200 DEG C of 8~20h of hydro-thermal reaction after CL, then cool down, filtering, and with absolute ethyl alcohol and distilled water cyclic washing
3~5 times, and after being dried in baking oven, finally 400~800 DEG C of 4~10h of roasting in Muffle furnace, obtain final product flaxen nanometer
CeO2Hollow ball；
2）By meso-porous nano CeO2Hollow ball impregnated in RuCl3Or Ru3(CO)12In solution, room temperature immersion 10~24 hours, then
By drying meso-porous nano CeO is obtained in 400~600 DEG C of roastings within 3~6 hours2Hollow ball supported catalyst.
Ethylene glycol and the volume ratio of distilled water are 1 in the mixed solution:1~5:1.
The weight content that the PVP is dissolved in PVP after mixed solution is 2%~5%.
Meso-porous nano CeO as described above2Hollow ball supported catalyst is in the treatment of high concentrated organic wastewater catalytic wet oxidation
In application.
Catalyst of the present invention has good activity for the catalyzing oxidizing degrading of water middle and high concentration organic matter.
In 100mL stainless steel autoclaves, with the butyric acid of high concentration, ethanol as object, at 180 DEG C, under 0.8MPa oxygen partial pressures, reaction
The clearance of COD can reach more than 96% after 2h.In addition, itrogenous organic substance N, N- diformazan of this catalyst to high-concentration hardly-degradable
Yl acetamide（DMAC）Also there is catalysis activity higher, at 220 DEG C, under 0.8Mpa oxygen partial pressures, the clearance of COD can reach
More than 90%.
Meso-porous nano CeO prepared by the present invention2The Ru catalyst of hollow ball load has advantages below：
（1）Catalyst carrier of the present invention is a kind of novel carriers, is favorably improved the activity of catalyst；
（2）Catalyst of the present invention has catalysis activity higher in the catalyzing oxidizing degrading of high concentrated organic wastewater；
（3）The catalyst degradation of the present invention reaction condition of catalytic wet oxidation, low-temp low-pressure reaction is more conducive to industrial applications；
（4）Bullion content is low in catalyst of the present invention, reduces the preparation cost of catalyst, economic and environment-friendly, suitable work
Industry is amplified.
Specific embodiment
Embodiment 1
60mL ethylene glycol and 60mL distilled water are added in the beaker of 200mL（EG/H2O=1/1）And magnetic agitation forms homogeneous
Solution, 2.6667gPVP is added thereto up to being completely dissolved, and is subsequently adding the Ce (NO of 3.4762g3)3•6H2O solids, it is completely molten
It is transferred to after solution in the stainless steel hydrothermal reaction kettle with polytetrafluoroethyllining lining of 200mL, is positioned in baking oven respectively 140
DEG C, 160 DEG C, hydro-thermal reaction 18h under the conditions of 180 DEG C and 200 DEG C, to the CeO for preparing2Product carries out the sign of TEM patterns, works as water
Without product generation when thermal response temperature is 140 DEG C, as reaction temperature increases to 200 DEG C, product CeO from 160 DEG C2Structure from
The amount of nano-hollow ball increases, and partly becomes nano particle, and only has a small amount of product to generate at 160 DEG C, TEM（Transmission electricity
Sub- microscope）Analysis shows CeO at 180 DEG C2The amount of nano-hollow ball product is maximum.
Embodiment 2
60mL ethylene glycol and 60mL distilled water are added in the beaker of 200mL and magnetic agitation form homogeneous solution,
2.67gPVP is added thereto up to being completely dissolved, and is subsequently adding the Ce (NO of 3.48g3)3•6H2O solids, are transferred to after being completely dissolved
In the stainless steel hydrothermal reaction kettle with polytetrafluoroethyllining lining of 200mL, be positioned in baking oven 180 DEG C of hydro-thermal reactions 6~
24h, then natural cooling, filtering, and with absolute ethyl alcohol and distilled water cyclic washing 3-5 times, and after dry in 110 DEG C of baking oven
Dry 12h, finally 500 DEG C of roasting 4h in Muffle furnace, that is, obtain flaxen CeO2Powder.
XRD（Polycrystal powder X-ray diffractometer）Analysis result shows, 24h is extended to from 6h when the time of solvent heat, made
Standby CeO2All it is the structure of cubic fluorite, the crystalline structure for simply reacting the product formed after 6h is poor.Work as solvent thermal reaction
Carry out solid nanometer spherical after 6h into, after reaction carries out 8h, start hollow nano-sphere occur, but solid nanospheres are still accounted for
According to leading position, and work as after reaction carries out 18h, average grain diameter is formed for the hollow nano-sphere of 300nm, when reacted between continue to increase
After being added to 24h, destructurized, the only nano particle presence of hollow nano-sphere.
Embodiment 3
60mL ethylene glycol and 60mL distilled water are added in the beaker of 200mL and magnetic agitation forms homogeneous solution, 2.7gPVP
It is added thereto up to being completely dissolved, is subsequently adding the Ce (NO of 3.5g3)3·6H2O solids, are transferred to 200mL's after being completely dissolved
In stainless steel hydrothermal reaction kettle with polytetrafluoroethyllining lining, 180 DEG C of hydro-thermal reaction 18h in baking oven are positioned over, it is then natural
It is cooled to room temperature, and with absolute ethyl alcohol and distilled water cyclic washing 3-5 times, filtering, and after drying 12h in 110 DEG C of baking oven,
Last 500 DEG C of roasting 4h in Muffle furnace, that is, obtain flaxen CeO2Powder.Tem analysis also further demonstrate CeO2Produce
Thing is spherical pattern, at the same also show this it is spherical be hollow ball structure, BET（Specific surface area is tested）Test shows that it compares
Surface area is 77m2/ g, according to BJH（Barrett-Joiner-Halenda）Method calculate CeO2The average hole of nano-hollow ball
Footpath is 6.578 nm, and pore volume is 0.19 cm3/g。
Weigh presoma RuCl3.xH2O, is dissolved in 25mL distilled water and absolute ethyl alcohol（Account for the 2wt% of distilled water）Formed
Mixed solution in, be then transferred in 50mL round-bottomed flasks, the 2.5g carrier impregnations for weighing in wherein, stand dipping
21h, then 90 DEG C of rotary evaporation 1h remove moisture removal in Rotary Evaporators, then 6h are dried in 110 DEG C of baking oven, finally in horse
Not 400 DEG C of roasting 4h obtain the catalyst of different Ru load capacity in stove, and its catalysis activity is shown in Table 1.
Catalytic wet oxidation reaction is carried out in the stainless steel autoclave with polytetrafluoroethylene (PTFE) of 100mL, is weighed
The catalyst that 0.25g has been prepared, is subsequently adding butyric acid or ethanol or N, N- diformazan that 20mLCOD contents are 5500mg/L
Yl acetamide（DMAC）Solution, sealing, then heats under magnetic stirring, when setting reaction temperature reaches 180 DEG C, is now designated as
Reaction zero point, then passes to 0.8MPa O2Partial pressure, reaction carry out 2h after, room temperature is cooled to immediately, then take out solution by from
The heart isolates reacted solution, and carries out COD analyses using 5B-3B type COD quick analytic instruments.
The catalyst of the difference Ru load capacity of table 1. is contrasted to the COD clearances of different organic matters
Embodiment 4
Nano Ce O2The presoma of Ru is simply changed into Ru by the preparation of hollow ball and the preparation of catalyst with embodiment 33(CO)12,
The support C eO for preparing2Impregnated in Ru3(CO)12Cyclohexane solution in, solvent of being gone out after room temperature immersion 20h, in 100 DEG C of dryings
10h, it is the catalyst of 0.3wt% to obtain loading Ru in 400 DEG C of roasting 4h of Muffle furnace.It is right at different temperatures using this catalyst
Butyric acid and DMA（DMAC）Carry out catalytic oxidation treatment, remaining reaction condition with embodiment 3, COD after reaction
Clearance be shown in Table 2.
0.3wt% Ru/CeO at a temperature of the differential responses of table 2.2To butyric acid and the removal efficiency of DMAC
。
Claims (5)
1. meso-porous nano CeO2Hollow ball supported catalyst, it is characterised in that：The catalyst is with nano Ce O2Hollow ball is carrier,
Load the Ru relative to 0.3~1wt% of vehicle weight；The nano Ce O2The specific surface area of hollow ball is 50~150 m2/ g, puts down
Equal aperture is 5~10nm, and pore volume is 0.15~0.4 cm3/ g, particle diameter is 200~400nm.
2. meso-porous nano CeO as claimed in claim 12The preparation method of hollow ball supported catalyst, comprises the following steps：
1）PVP is added until being completely dissolved in the mixed solution of ethylene glycol and distilled water, is subsequently adding Ce (NO3)3Solid, it is complete
In 160~200 DEG C of 8~20h of hydro-thermal reaction after CL, then cool down, filtering, and with absolute ethyl alcohol and distilled water cyclic washing
3~5 times, and after being dried in baking oven, finally 400~800 DEG C of 4~10h of roasting in Muffle furnace, obtain final product flaxen nanometer
CeO2Hollow ball；
2）By meso-porous nano CeO2Hollow ball impregnated in RuCl3Or Ru3(CO)12In solution, room temperature immersion 10~24 hours, then
By drying meso-porous nano CeO is obtained in 400~600 DEG C of roastings within 3~6 hours2Hollow ball supported catalyst.
3. preparation method as claimed in claim 2, it is characterised in that the volume of ethylene glycol and distilled water in the mixed solution
Than being 1:1~5:1.
4. preparation method as claimed in claim 2, it is characterised in that the PVP is dissolved in the weight content of PVP after mixed solution
It is 2%~5%.
5. meso-porous nano CeO as claimed in claim 12Hollow ball supported catalyst is in high concentrated organic wastewater catalytic wet oxidation
Application in treatment.
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Cited By (8)
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| CN108807943A (en) * | 2018-07-19 | 2018-11-13 | 齐鲁工业大学 | A kind of hollow-core construction CeO2@C core-shell structure copolymer nanocomposites and the preparation method and application thereof |
| CN109160544A (en) * | 2018-09-20 | 2019-01-08 | 中国矿业大学 | A kind of preparation method of rare earth-transition metal composite oxide porous hollow ball |
| CN109665554A (en) * | 2019-01-16 | 2019-04-23 | 南昌大学 | A method of it adjusting solvent burden ratio and obtains the micro-nano ceria of morphology controllable |
| CN110367280A (en) * | 2019-08-09 | 2019-10-25 | 大连民族大学 | A kind of Ag/CeO2Antibacterial agent and preparation method thereof |
| CN111545193A (en) * | 2020-05-30 | 2020-08-18 | 西安交通大学 | Hollow core-shell structure catalyst for catalytic oxidation of nitrogen oxide and preparation method thereof |
| CN112121061A (en) * | 2020-09-21 | 2020-12-25 | 重庆医科大学 | Construction and application of multifunctional hollow cerium nano-particles and hollow cerium nano-composite drug-loading system |
| CN112958113A (en) * | 2021-02-08 | 2021-06-15 | 中国科学院化学研究所 | Cerium-cobalt bimetallic oxide catalyst for VOCs catalytic combustion and preparation method thereof |
| WO2021177705A1 (en) * | 2020-03-04 | 2021-09-10 | 서울대학교산학협력단 | Single-atom catalyst and method for forming same |
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