CN113289606A - Ozone catalyst and preparation method and application thereof - Google Patents
Ozone catalyst and preparation method and application thereof Download PDFInfo
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- CN113289606A CN113289606A CN202110685651.9A CN202110685651A CN113289606A CN 113289606 A CN113289606 A CN 113289606A CN 202110685651 A CN202110685651 A CN 202110685651A CN 113289606 A CN113289606 A CN 113289606A
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- ozone catalyst
- oxide
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- ozone
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- 239000003054 catalyst Substances 0.000 title claims abstract description 41
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title abstract description 9
- -1 lanthanide metal oxide Chemical class 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052747 lanthanoid Inorganic materials 0.000 claims abstract description 5
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 5
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 3
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 3
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 3
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 3
- 239000007864 aqueous solution Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 13
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 claims description 5
- 229910021645 metal ion Inorganic materials 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 claims description 4
- UZLYXNNZYFBAQO-UHFFFAOYSA-N oxygen(2-);ytterbium(3+) Chemical compound [O-2].[O-2].[O-2].[Yb+3].[Yb+3] UZLYXNNZYFBAQO-UHFFFAOYSA-N 0.000 claims description 3
- 229910001954 samarium oxide Inorganic materials 0.000 claims description 3
- 229940075630 samarium oxide Drugs 0.000 claims description 3
- FKTOIHSPIPYAPE-UHFFFAOYSA-N samarium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Sm+3].[Sm+3] FKTOIHSPIPYAPE-UHFFFAOYSA-N 0.000 claims description 3
- 229910003454 ytterbium oxide Inorganic materials 0.000 claims description 3
- 229940075624 ytterbium oxide Drugs 0.000 claims description 3
- 229910003440 dysprosium oxide Inorganic materials 0.000 claims description 2
- NLQFUUYNQFMIJW-UHFFFAOYSA-N dysprosium(iii) oxide Chemical compound O=[Dy]O[Dy]=O NLQFUUYNQFMIJW-UHFFFAOYSA-N 0.000 claims description 2
- 229910001938 gadolinium oxide Inorganic materials 0.000 claims description 2
- 229940075613 gadolinium oxide Drugs 0.000 claims description 2
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 claims description 2
- 229910003443 lutetium oxide Inorganic materials 0.000 claims description 2
- MPARYNQUYZOBJM-UHFFFAOYSA-N oxo(oxolutetiooxy)lutetium Chemical compound O=[Lu]O[Lu]=O MPARYNQUYZOBJM-UHFFFAOYSA-N 0.000 claims description 2
- MMKQUGHLEMYQSG-UHFFFAOYSA-N oxygen(2-);praseodymium(3+) Chemical compound [O-2].[O-2].[O-2].[Pr+3].[Pr+3] MMKQUGHLEMYQSG-UHFFFAOYSA-N 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229910003447 praseodymium oxide Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000002351 wastewater Substances 0.000 abstract description 7
- 230000005284 excitation Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 2
- 230000003197 catalytic effect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 5
- 239000002638 heterogeneous catalyst Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002815 homogeneous catalyst Substances 0.000 description 2
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- 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
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/615—100-500 m2/g
-
- 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
- B01J35/618—Surface area more than 1000 m2/g
-
- 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
- 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
-
- 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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
-
- 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
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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)
- Catalysts (AREA)
Abstract
The invention discloses an ozone catalyst and a preparation method and application thereof, and the ozone catalyst at least comprises an active component and a carrier; the active component comprises lanthanide metal oxide, and the carrier is SiO2. The specific surface area of the ozone catalyst provided by the invention is more than or equal to 200m2The efficiency of generating hydroxyl free radicals by excitation is more than or equal to 87 percent, and the removal rate of organic matters is higher; the grain diameter is larger, and hardening is not easy to generate; long service life and no need of replacement within 10 years. Has wide application prospect in the field of wastewater treatmentApparent economic benefit.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, particularly relates to a catalyst, and a preparation method and application thereof, and particularly relates to an ozone catalyst, and a preparation method and application thereof.
Background
The ozone catalytic oxidation technology is an efficient advanced wastewater treatment technology. Compared with the single oxidant of ozone, the hydroxyl radical formed by ozone under the action of the catalyst has higher reaction rate with organic matters and stronger oxidizability, and can oxidize almost all organic matters, so one of the key problems to be solved by the ozone catalytic oxidation technology is how to catalyze ozone to generate hydroxyl radical more efficiently.
Currently, ozone catalysts are generally classified into two types: homogeneous catalysts and heterogeneous catalysts of ozone, homogeneous catalyst distribute evenly and catalytic activity is high, but because its ion form can be mixed and dissolved in water, difficult to recycle in the actual use, and easy to produce secondary pollution, now less use. The heterogeneous catalyst exists in a solid state, is generally a transition metal element, and is mainly divided into a transition metal oxide, a transition metal loaded on a carrier, an oxide thereof and the like, and the preparation method mainly comprises a sol-gel nanotechnology, a dipping method, a roasting method and the like; the catalytic performance of the catalyst is mainly influenced by factors such as an oxide crystal form, a pore structure of the catalyst, surface chemical properties of the catalyst and the like, and the heterogeneous catalyst in the current market generally has problems to be solved, such as complex preparation process, easy hardening, poor catalytic effect, short service life and the like.
Disclosure of Invention
The invention aims to provide an ozone catalyst, a preparation method and an application thereof.
Therefore, the technical scheme of the invention is as follows:
in a first aspect, the present invention provides an ozone catalyst comprising at least an active component and a carrier; wherein the active component comprises lanthanide metal oxide, and the carrier is SiO2。
Preferably, the lanthanide metal oxide is one or a combination of at least two of lanthanum oxide, cerium oxide, praseodymium oxide, samarium oxide, gadolinium oxide, dysprosium oxide, ytterbium oxide and lutetium oxide;
preferably, the carrier is amorphous SiO2。
Preferably, in the ozone catalyst, the mass percentage of the metal ions in the active component is 2-15%, for example, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15% or all values in the range may be included, and the description is omitted due to space limitations;
preferably, the mass percentage of the metal ions of the active component is 3-10%.
Preferably, the ozone catalyst has a specific surface area of at least 200m2G, may be, for example, 250m2/g、300m2/g、350m2/g、400m2/g、450m2/g、500m2And/g or all values within the stated ranges, which are not repeated herein due to space limitations.
Preferably, the particle size of the ozone catalyst is 4-8mm, for example, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm or all values in the range are possible, and will not be described in detail due to space limitation.
In a second aspect, the present invention provides a method for preparing an ozone catalyst according to the first aspect, comprising at least the steps of:
1) preparing the active component into an aqueous solution A;
2) and loading the aqueous solution A on a carrier, and drying and roasting to obtain a finished product.
Preferably, the temperature of drying is at least 100 deg.C (e.g. 105 deg.C, 110 deg.C, 115 deg.C, 120 deg.C, 125 deg.C, 130 deg.C), and the drying time is 1-2h (e.g. 1.1h, 1.2h, 1.3h, 1.4h, 1.5h, 1.6h, 1.7h, 1.8h, 1.9 h);
preferably, the calcination temperature is 400-.
Preferably, step 2) comprises the steps of: and loading the aqueous solution A on the formed carrier, sealing for at least 4h, drying and roasting to obtain a finished product.
Preferably, the preparation method comprises at least the following steps:
1) preparing the active component into an aqueous solution A;
2) spraying the aqueous solution A on a carrier, and sealing for at least 4 h;
3) and (3) drying: the temperature is at least 100 ℃, and the time is 1-2 h;
4) roasting: the temperature is 400 ℃ and 700 ℃, and the time is 2-6h, thus obtaining the finished product.
In a third aspect, the present invention provides the use of an ozone catalyst as described in the first aspect for the treatment of wastewater.
Compared with the prior art, the specific surface area of the ozone catalyst provided by the invention is more than or equal to 200m2The efficiency of generating hydroxyl free radicals by excitation is more than or equal to 87 percent, and the removal rate of organic matters is higher; the grain diameter is 4-8mm, the grain diameter is larger, and hardening is not easy to generate; long service life and no need of replacement within 10 years. Has wide application prospect and considerable economic benefit in the field of wastewater treatment.
Detailed Description
The present invention will be further described with reference to the following examples, which are not intended to limit the invention in any way.
Example 1
1) Preparing lanthanum oxide into an aqueous solution A;
2) spraying the aqueous solution A on the amorphous SiO2Sealing the carrier for at least 4 hours; wherein, the mass percent of lanthanum ions in the lanthanum oxide is 3.5 percent;
3) and (3) drying: the temperature is 100 ℃, and the time is 1 h;
4) roasting: the temperature is 400 ℃ and the time is 6h, thus obtaining the finished product.
Example 2
1) Preparing cerium oxide into an aqueous solution A;
2) spraying the aqueous solution A on the amorphous SiO2Sealing the carrier for 4 hours; wherein, the mass percentage of cerium ions in the cerium oxide is 10 percent;
3) and (3) drying: the temperature is 120 ℃, and the time is 1 h;
4) roasting: the temperature is 700 ℃, and the time is 2h, thus obtaining the finished product.
Example 3
1) Preparing a mixture of samarium oxide and ytterbium oxide into an aqueous solution A;
2) spraying the aqueous solution A on the amorphous SiO2Sealing the carrier for 4 hours; wherein the mass percent of the metal ions is 5 percent;
3) and (3) drying: the temperature is 140 ℃, and the time is 1 h;
4) roasting: the temperature is 500 ℃ and the time is 3h, thus obtaining the finished product.
Performance testing
The finished ozone catalysts prepared in examples 1-3 and commercially available, commercially used metal & ceramic catalyst A, GAC catalyst B were evaluated in a wastewater ozone catalytic oxidation test.
Test conditions
The examples 1-3 and the reference component are respectively used in a fixed bed reactor for treating wastewater, the wastewater is printing and dyeing wastewater, the COD mass concentration is about 300mg/L through determination, and the pH value is 8.2-9. The volume of the catalyst bed layer is 15L, O3The concentration is 50mg/L, O3The volume flow rate is 40L/h, and when the reactor is continuously operated for 3h, 4h and 5h at room temperature, the COD removal rate is respectively measured, and the measurement results are detailed in Table 1.
TABLE 1 evaluation test results of catalyst treatment of printing and dyeing wastewater
As can be seen from the test results in Table 1, the COD removal rate of examples 1-3 is significantly higher than that of the commercial catalysts A and B, which indicates that the ozone catalyst of the present invention has higher organic matter removal rate, and the analysis reason is probably that the catalyst of the present invention has larger specific surface area and higher efficiency of generating hydroxyl radicals by excitation; in addition, the larger grain size is not easy to harden, and the catalytic efficiency can be improved; the catalyst of the invention has longer service life and does not need to be replaced within 10 years.
It is to be noted and understood that various modifications and improvements can be made to the invention described in detail above without departing from the spirit and scope of the invention as claimed in the appended claims. Accordingly, the scope of the claimed subject matter is not limited by any of the specific exemplary teachings provided.
The applicants hereby give notice that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. An ozone catalyst, characterized in that the ozone catalyst comprises at least an active component and a carrier; wherein the active component comprises lanthanide metal oxide, and the carrier is SiO2。
2. The ozone catalyst as recited in claim 1, wherein the lanthanoid metal oxide is any one of lanthanum oxide, cerium oxide, praseodymium oxide, samarium oxide, gadolinium oxide, dysprosium oxide, ytterbium oxide, lutetium oxide, or a combination of at least two thereof;
preferably, the carrier is amorphous SiO2。
3. The ozone catalyst according to claim 1 or 2, wherein in the ozone catalyst, the metal ion mass percentage of the active component is 2 to 15%;
preferably, the mass percentage of the metal ions of the active component is 3-10%.
4. The ozone catalyst according to any one of claims 1 to 3, wherein the specific surface area of the ozone catalyst is at least 200m2/g。
5. The ozone catalyst according to any one of claims 1 to 4, wherein the particle size of the ozone catalyst is 4 to 8 mm.
6. The method for producing an ozone catalyst according to any one of claims 1 to 5, characterized by comprising at least the steps of:
1) preparing the active component into an aqueous solution A;
2) and loading the aqueous solution A on a carrier, and drying and roasting to obtain a finished product.
7. The method of claim 6, wherein the temperature of drying is at least 100 ℃ and the time of drying is 1-2 hours;
preferably, the roasting temperature is 400-700 ℃, and the roasting time is 2-6 h.
8. The method of claim 6 or 7, wherein the step 2) comprises the steps of: and loading the aqueous solution A on the formed carrier, sealing for at least 4h, drying and roasting to obtain a finished product.
9. The method for producing an ozone catalyst according to any one of claims 1 to 8, characterized by comprising at least the steps of:
1) preparing the active component into an aqueous solution A;
2) spraying the aqueous solution A on a carrier, and sealing for at least 4 h;
3) and (3) drying: the temperature is at least 100 ℃, and the time is 1-2 h;
4) roasting: the temperature is 400 ℃ and 700 ℃, and the time is 2-6h, thus obtaining the finished product.
10. Use of the ozone catalyst according to any one of claims 1-5 for wastewater treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110685651.9A CN113289606A (en) | 2021-06-21 | 2021-06-21 | Ozone catalyst and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110685651.9A CN113289606A (en) | 2021-06-21 | 2021-06-21 | Ozone catalyst and preparation method and application thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107961811A (en) * | 2017-11-23 | 2018-04-27 | 北京航空航天大学 | A kind of loaded catalyst of depth degradation industrial dye waste water and preparation method thereof |
| CN108579755A (en) * | 2018-04-09 | 2018-09-28 | 北京天地人环保科技有限公司 | A kind of wastewater treatment catalyst and its application |
| CN110115999A (en) * | 2018-02-06 | 2019-08-13 | 浙江中凯瑞普环境工程股份有限公司 | Ozone catalytic oxidation catalyst and preparation method thereof for degradation of organic waste water |
| CN110779849A (en) * | 2019-12-05 | 2020-02-11 | 成都中医药大学 | Method for measuring specific surface area of amorphous silicon dioxide |
| CN112958069A (en) * | 2021-03-05 | 2021-06-15 | 中科宇图科技股份有限公司 | Composite catalyst for catalytic oxidation of ozone and preparation method thereof |
-
2021
- 2021-06-21 CN CN202110685651.9A patent/CN113289606A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107961811A (en) * | 2017-11-23 | 2018-04-27 | 北京航空航天大学 | A kind of loaded catalyst of depth degradation industrial dye waste water and preparation method thereof |
| CN110115999A (en) * | 2018-02-06 | 2019-08-13 | 浙江中凯瑞普环境工程股份有限公司 | Ozone catalytic oxidation catalyst and preparation method thereof for degradation of organic waste water |
| CN108579755A (en) * | 2018-04-09 | 2018-09-28 | 北京天地人环保科技有限公司 | A kind of wastewater treatment catalyst and its application |
| CN110779849A (en) * | 2019-12-05 | 2020-02-11 | 成都中医药大学 | Method for measuring specific surface area of amorphous silicon dioxide |
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| Title |
|---|
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