CN111229225A - Iron composite catalyst for ozone catalytic oxidation and preparation method thereof - Google Patents
Iron composite catalyst for ozone catalytic oxidation and preparation method thereof Download PDFInfo
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- CN111229225A CN111229225A CN202010216236.4A CN202010216236A CN111229225A CN 111229225 A CN111229225 A CN 111229225A CN 202010216236 A CN202010216236 A CN 202010216236A CN 111229225 A CN111229225 A CN 111229225A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 71
- 239000002131 composite material Substances 0.000 title claims abstract description 48
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 46
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims description 37
- 238000007254 oxidation reaction Methods 0.000 title claims description 27
- 230000003647 oxidation Effects 0.000 title claims description 26
- 229910052742 iron Inorganic materials 0.000 title claims description 23
- 238000001035 drying Methods 0.000 claims abstract description 29
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000001354 calcination Methods 0.000 claims abstract description 20
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000000243 solution Substances 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims abstract description 6
- 230000001070 adhesive effect Effects 0.000 claims abstract description 6
- 239000012266 salt solution Substances 0.000 claims abstract description 6
- 150000002505 iron Chemical class 0.000 claims abstract description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 8
- 238000002791 soaking Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 5
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical group O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
- PVFSDGKDKFSOTB-UHFFFAOYSA-K iron(3+);triacetate Chemical compound [Fe+3].CC([O-])=O.CC([O-])=O.CC([O-])=O PVFSDGKDKFSOTB-UHFFFAOYSA-K 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 239000004480 active ingredient Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 3
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 229920002401 polyacrylamide Polymers 0.000 description 9
- 239000002351 wastewater Substances 0.000 description 7
- 229910052593 corundum Inorganic materials 0.000 description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000013590 bulk material Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000006385 ozonation reaction Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005949 ozonolysis reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 239000010457 zeolite Substances 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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
-
- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
-
- 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
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F2101/34—Organic compounds containing oxygen
- C02F2101/345—Phenols
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Catalysts (AREA)
Abstract
The catalyst is prepared by using active alumina and active iron oxide to prepare a composite carrier, and using the iron oxide as an active component. The preparation method of the catalyst comprises two processes of carrier preparation and catalyst preparation, wherein firstly, iron oxide and active alumina are uniformly mixed, an adhesive solution is added, the mixture is pressed into blocks, drying treatment and calcination are carried out to obtain the catalyst composite carrier, and then the prepared catalyst is soaked in an iron salt solution and then dried and calcined to obtain the catalyst. The catalyst has high catalytic activity, easily obtained raw materials and low cost, the preparation method is simple, the large-scale production is easy, the stability is good, and the catalyst can be repeatedly used for many times.
Description
Technical Field
The invention relates to the technical field of catalysts, in particular to an iron composite catalyst for catalytic oxidation of ozone and a preparation method thereof.
Background
With the increasing speed of the industrialization process of China, the increasing aggravation of the water pollution problem becomes a major problem affecting the sustainable development of China. Organic wastewater is one of recognized high-risk pollutants, the organic wastewater has complex components, poor biodegradability and high wastewater treatment difficulty, and the traditional secondary biochemical treatment is difficult to meet the requirements of new discharge standards, so that the advanced oxidation technology is developed at the same time and is developed rapidly.
The catalytic ozonation technology is an advanced ozonation technology based on ozone, and is a research hotspot in the field of industrial sewage treatment in recent years. Ozone, a safe and clean oxidant, has an oxidation potential of 2.07V, second only to that of + OH (2.81V) and F2 (2.87V). The ozone oxidation process is mainly achieved by two ways, direct and indirect reactions. Wherein the direct reaction means that ozone and organic matters directly react; the indirect reaction is to decompose ozone into hydroxyl free radicals with stronger oxidability under normal pressure to perform oxidation reaction with organic matters in the wastewater, so that the organic matters are converted into carbon dioxide and water, thereby achieving the purpose of reducing COD in the wastewater. Among them, hydroxyl radical is generated by the interaction of ozone and catalyst, and has faster oxidation rate, and almost all pollutants can be oxidized. In order to increase the speed of generating hydroxyl radicals by the action of ozone and a catalyst, a large number of researchers find an ozone catalytic material with more excellent performance on one hand and prepare a better ideal catalyst carrier on the other hand.
The common ozone catalytic oxidation catalyst is prepared by loading metal or metal oxide on carriers of a series of porous catalyst materials such as zeolite, ceramic, silica gel, molecular sieve and the like, wherein the carriers have the characteristics of large specific surface area, long service life of the catalyst, easy separation and recovery and the like. How to further modify the existing porous catalyst carrier and accelerate the speed of the porous catalyst carrier for catalyzing the ozone to decompose hydroxyl radicals is a research hotspot of the ozone catalytic oxidation catalyst.
Disclosure of Invention
The invention aims to provide an iron composite catalyst which can improve the oxidation rate and efficiency of organic matters in sewage and has low cost and simple preparation method.
The invention relates to an iron composite catalyst for catalytic oxidation of ozone, wherein a carrier of the iron composite catalyst for catalytic oxidation of ozone is a composite carrier, an active ingredient is ferric oxide, and the composite carrier is active alumina and active ferric oxide.
The carrier of the catalyst is a composite carrier, the active alumina and the active iron oxide are combined together through the adhesive, the active alumina and the active iron oxide have high catalytic activity and can catalyze the ozonolysis, and after the two materials are mixed, the catalytic activity of the catalyst is greater than that of the catalyst existing alone, so that the loading capacity of the catalyst is improved.
Further, the mass ratio of the composite carrier active iron oxide to the active aluminum oxide is 1: 9-3: 7.
When the mass ratio of the active alumina to the active ferric oxide in the composite carrier is 9: 1-17: 3, the catalytic activity of the composite carrier is better.
Further, the binder of the composite carrier is PAM.
PAM (polyacrylamide) has amide groups, and is easy to form hydrogen bonds with water or some organic pollutants in water, so that the PAM can quickly adsorb the organic pollutants and accelerate the rate and efficiency of the PAM to be degraded by ozone.
On the other hand, the invention discloses a preparation method of an iron composite catalyst for ozone catalytic oxidation, which comprises the following steps:
(1) preparation of the catalyst composite carrier:
uniformly mixing active iron oxide and active aluminum oxide, adding an adhesive solution, uniformly stirring, pressing into blocks, drying, and calcining to obtain a catalyst composite carrier;
(2) preparation of the catalyst:
preparing an iron salt solution, soaking the composite carrier prepared in the step (1) in the iron salt solution, drying, and calcining to obtain the iron composite catalyst.
Furthermore, the solvent of the adhesive is water and hydrogen peroxide, and the volume ratio of the water to the hydrogen peroxide is 7: 3-1: 1.
Water and hydrogen peroxide are used as solvents, and in the drying process, the hydrogen peroxide is decomposed to generate oxygen, so that the specific surface area of the catalyst is increased, the contact area of the catalyst and wastewater is increased, and the degradation rate and efficiency of pollutants are accelerated.
Further, the concentration of the hydrogen peroxide is 27%.
The best effect is achieved when the concentration of the hydrogen peroxide is 27%.
Further, in the preparation process of the catalyst composite carrier in the step (1), the drying treatment comprises two stages, wherein the drying temperature in the first stage is 50-80 ℃, the drying time is 0.5-2 h, the drying temperature in the second stage is 80-100 ℃, the drying time is 0.5-2 h, the calcining temperature is 550-650 ℃, and the calcining time is 3-4.5 h.
Furthermore, the concentration of the PAM adhesive is 3-5 per mill.
Further, in the preparation process of the catalyst in the step (2), the soaking time is 30-90 min; the ferric salt comprises at least one of ferric nitrate, ferric acetate, ferric chloride and polyferric chloride, and the concentration of the ferric salt is 15-35%.
The composite carrier is soaked in polyferric chloride solution and the like, the catalyst obtained after drying and calcining has better catalytic effect on wastewater of macromolecular organic pollutants, and the composite carrier is soaked in ferric chloride, ferric nitrate and the like, and the catalytic effect obtained after drying and calcining is better.
Further, in the preparation process of the catalyst in the step (2), the drying temperature of the drying treatment is 90-120 ℃, the drying time is 2-3 hours, the calcining temperature is 400-600 ℃, and the calcining time is 4-6 hours.
The temperature is too low, the prepared composite carrier is fragile in wastewater, and the catalytic activity of the composite carrier is reduced when the temperature is too high. The optimum calcination temperature for the catalyst of the invention is therefore 550 ℃ to 650 ℃.
Compared with the prior art, the invention has the following advantages and effects:
1. the catalytic activity of the catalyst is greatly improved;
2. the raw materials are easy to obtain, and the cost is low;
3. the preparation method is simple and is easy for large-scale production;
4. good stability and repeated utilization.
Detailed Description
The present invention is described in further detail below by way of examples, which are illustrative of the present invention and are not intended to limit the present invention thereto.
Example 1:
weighing active Fe2O3 and Al2O3 powder, uniformly mixing, adding a proper amount of 5 per mill of PAM solution, uniformly stirring, and pressing into blocks, wherein the mass ratio of Fe2O3 to Al2O3 is 1: 9. The bulk material was then dried at 60 ℃ for 1.5h, then at 100 ℃ for 1h, and finally calcined at a different temperature T1 ℃ for 4.5h to give the catalyst support.
Soaking the catalyst carrier in 20% ferric nitrate solution for 45min, drying at 100 deg.C for 2h, and calcining at different temperature T2 deg.C for 4.5h to obtain the ozone-catalyzed-oxidized iron composite catalyst.
Under the ozone experiment condition, the adding amount of the catalyst is 10g/L, the reaction time is 20min, the adding amount of the ozone is 2g/h, and the water amount is 1L.
The initial COD of the water sample is 450mg/L, the concentration of volatile phenol is 60mg/L, and the results are shown in Table 1:
TABLE 1
Example 2:
weighing active Fe2O3 and Al2O3 powder, uniformly mixing, adding a proper amount of 5 per mill PAM solution, uniformly stirring, and pressing into blocks, wherein the mass ratio of Fe2O3 to Al2O3 is different, and n. The bulk material was then dried at 80 ℃ for 1h, followed by 120 ℃ for 0.5h, and finally calcined at 600 ℃ for 4h to obtain the catalyst support.
Soaking the catalyst carrier in V ferric acetate solution for 90min, then drying for 2h at 100 ℃, and finally calcining for 4h at 550 ℃ to obtain the ozone catalytic oxidation iron composite catalyst.
Under the ozone experiment condition, the adding amount of the catalyst is 10g/L, the reaction time is 30min, the adding amount of the ozone is 2g/h, and the water amount is 1L.
The initial COD of the water sample was 450mg/L, the concentration of volatile phenol was 60mg/L, and the results are shown in Table 2:
TABLE 2
Example 3:
weighing active Fe2O3 and Al2O3 powder, uniformly mixing, adding a proper amount of 4 per mill of PAM solution, uniformly stirring, and pressing into blocks, wherein the mass ratio of Fe2O3 to Al2O3 is 3: 17. Then drying for 0.5h at 90 ℃, then drying for 0.5h at 120 ℃, and finally calcining for 4h at 600 ℃ to obtain the catalyst carrier.
Soaking the catalyst carrier in 25% ferric salt solution for 90min, then drying for 2h at 100 ℃, and finally calcining for different times D at 550 ℃ to obtain the ozone catalytic oxidation iron composite catalyst.
Under the ozone experiment condition, the adding amount of the catalyst is 10g/L, the reaction time is 20min, the adding amount of the ozone is 2g/h, and the water amount is 1L.
The initial COD of the water sample was 450mg/L, the concentration of volatile phenol was 60mg/L, and the results are shown in Table 3:
TABLE 3
In addition, it should be noted that the specific embodiments described in the present specification may be different in terms of the parts, the shapes of the components, the process steps, the names of the methods, and the like. All equivalent or simple changes of the structure, the characteristics and the principle of the invention which are described in the patent conception of the invention are included in the protection scope of the patent of the invention. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The iron composite catalyst for catalytic oxidation of ozone is characterized in that a carrier of the iron composite catalyst for catalytic oxidation of ozone is a composite carrier, an active ingredient is ferric oxide, and the composite carrier is active alumina and active ferric oxide.
2. The iron composite catalyst for catalytic oxidation of ozone as claimed in claim 1, wherein the mass ratio of the composite carrier active iron oxide to the active alumina is 1: 9-3: 7.
3. The iron composite catalyst for catalytic oxidation by ozone as claimed in claim 1 or 2, characterized in that the binder of the composite carrier is PAM.
4. The method for preparing an iron composite catalyst for catalytic oxidation of ozone according to any one of claims 1 to 3, comprising the steps of:
(1) preparation of the catalyst composite carrier:
uniformly mixing active iron oxide and active aluminum oxide, adding an adhesive solution, uniformly stirring, pressing into blocks, drying, and calcining to obtain a catalyst composite carrier;
(2) preparation of the catalyst:
preparing an iron salt solution, soaking the composite carrier prepared in the step (1) in the iron salt solution, drying, and calcining to obtain the iron composite catalyst.
5. The preparation method of the iron composite catalyst for catalytic oxidation by ozone as claimed in claim 4, wherein the solvent of the binder is water and hydrogen peroxide, and the volume ratio of the water to the hydrogen peroxide is 7: 3-1: 1.
6. The preparation method of the iron composite catalyst for catalytic oxidation of ozone as claimed in claim 5, wherein the concentration of the hydrogen peroxide is 27%.
7. The method for preparing an iron composite catalyst for catalytic oxidation by ozone according to any one of claims 4 to 6, wherein in the preparation process of the catalyst composite carrier in the step (1), the drying treatment comprises two stages, wherein the drying temperature in the first stage is 50 to 80 ℃, the drying time is 0.5 to 2 hours, the drying temperature in the second stage is 80 to 100 ℃, the drying time is 0.5 to 2 hours, the calcining temperature is 550 to 650 ℃, and the calcining time is 3 to 4.5 hours.
8. The method for preparing an iron composite catalyst for catalytic oxidation of ozone as claimed in any one of claims 4 to 6, wherein the concentration of the binding agent PAM is 3 to 5% o.
9. The method for preparing the iron composite catalyst for catalytic oxidation of ozone as claimed in any one of claims 4 to 6, wherein the soaking time is 30-90 min during the preparation of the catalyst in the step (2); the ferric salt comprises at least one of ferric nitrate, ferric acetate, ferric chloride and polyferric chloride, and the concentration of the ferric salt is 15-35%.
10. The preparation method of the iron composite catalyst for catalytic oxidation by ozone according to claim 9, wherein in the preparation process of the catalyst in the step (2), the drying temperature of the drying treatment is 90-120 ℃, the drying time is 2-3 h, the calcining temperature is 400-600 ℃, and the calcining time is 4-6 h.
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| CN202010216236.4A CN111229225A (en) | 2020-03-25 | 2020-03-25 | Iron composite catalyst for ozone catalytic oxidation and preparation method thereof |
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| CN202010216236.4A CN111229225A (en) | 2020-03-25 | 2020-03-25 | Iron composite catalyst for ozone catalytic oxidation and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050069471A1 (en) * | 2003-09-25 | 2005-03-31 | Obee Timothy N. | System to enhance the photocatalytic oxidation rate of contaminants through selective desorption of water utilizing microwaves |
| CN101982237A (en) * | 2010-09-20 | 2011-03-02 | 中国海洋石油总公司 | Preparation method of ozone catalytic oxidation catalyst used for treating oil refining waste water |
| CN105289610A (en) * | 2015-11-16 | 2016-02-03 | 建德市环保科技创新创业中心有限公司 | Aluminium-oxide-supported iron oxides catalyst, preparation method and application thereof to organic wastewater processing |
| CN109382092A (en) * | 2017-08-07 | 2019-02-26 | 光大水务（深圳）有限公司 | Ozone oxidation catalyst and preparation method thereof based on the balloon borne body of active gama-alumina |
| CN109876811A (en) * | 2019-04-01 | 2019-06-14 | 清华大学 | One type Fenton nanocatalyst and its preparation and application |
-
2020
- 2020-03-25 CN CN202010216236.4A patent/CN111229225A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050069471A1 (en) * | 2003-09-25 | 2005-03-31 | Obee Timothy N. | System to enhance the photocatalytic oxidation rate of contaminants through selective desorption of water utilizing microwaves |
| CN101982237A (en) * | 2010-09-20 | 2011-03-02 | 中国海洋石油总公司 | Preparation method of ozone catalytic oxidation catalyst used for treating oil refining waste water |
| CN105289610A (en) * | 2015-11-16 | 2016-02-03 | 建德市环保科技创新创业中心有限公司 | Aluminium-oxide-supported iron oxides catalyst, preparation method and application thereof to organic wastewater processing |
| CN109382092A (en) * | 2017-08-07 | 2019-02-26 | 光大水务（深圳）有限公司 | Ozone oxidation catalyst and preparation method thereof based on the balloon borne body of active gama-alumina |
| CN109876811A (en) * | 2019-04-01 | 2019-06-14 | 清华大学 | One type Fenton nanocatalyst and its preparation and application |
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Application publication date: 20200605 |