CN108636396B - Preparation method of pollution treatment silk screen - Google Patents
Preparation method of pollution treatment silk screen Download PDFInfo
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- CN108636396B CN108636396B CN201810528436.6A CN201810528436A CN108636396B CN 108636396 B CN108636396 B CN 108636396B CN 201810528436 A CN201810528436 A CN 201810528436A CN 108636396 B CN108636396 B CN 108636396B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000010425 asbestos Substances 0.000 claims abstract description 44
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 44
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 24
- BHXBZLPMVFUQBQ-UHFFFAOYSA-K samarium(iii) chloride Chemical compound Cl[Sm](Cl)Cl BHXBZLPMVFUQBQ-UHFFFAOYSA-K 0.000 claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 24
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- HVUMOYIDDBPOLL-XGKPLOKHSA-N [2-[(2r,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XGKPLOKHSA-N 0.000 claims abstract description 6
- 230000032683 aging Effects 0.000 claims abstract description 6
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000001354 calcination Methods 0.000 claims abstract description 6
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims abstract description 6
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 6
- 239000004094 surface-active agent Substances 0.000 claims abstract description 6
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 abstract description 12
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 8
- 238000000746 purification Methods 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000007888 film coating Substances 0.000 abstract 1
- 238000009501 film coating Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- -1 formaldehyde, aromatic hydrocarbon Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Classifications
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- 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
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- 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
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- 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
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/206—Rare earth metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/209—Other metals
- B01D2255/2092—Aluminium
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Water Supply & Treatment (AREA)
- Toxicology (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Processing Of Solid Wastes (AREA)
- Filtering Materials (AREA)
Abstract
A preparation method of a pollution treatment silk screen belongs to the field of environmental pollution purification materials, and comprises the following process steps: preparing an aluminum-titanium solution: preparing solution A by using absolute ethyl alcohol, isopropanol and a surfactant Span60, adding isopropyl titanate and aluminum isopropoxide, and stirring to form an aluminum-titanium solution; preparing a samarium chloride solution: deionized water and samarium chloride are used for forming a solution B, isopropanol and hexadecyl trimethyl ammonium chloride are added, and the mixture is stirred to form a samarium chloride solution; asbestos wire mesh film coating: and stirring the samarium chloride solution and the aluminum-titanium solution to form a solution C, dripping the solution C on an asbestos wire mesh, and aging, drying, calcining and cooling to obtain the pollution treatment wire mesh. Can be used for removing and purifying various organic pollutants in air and water.
Description
Technical Field
The invention belongs to the field of environment pollution purification materials, and particularly relates to a preparation method of a pollution treatment silk screen.
Background
The problem of environmental pollution is a concern of people, and especially organic pollutants in the atmosphere and water pose a great threat to human health and must be purified by effective measures. The net material plays an important role in the treatment of the pollution of the atmosphere and the water, can remove the pollutants in the flowing state of the atmosphere and the water, and is a widely adopted pollution treatment material. The purification function of the mesh material for pollutants usually comes from two aspects of filtration and interception and adsorption, and especially the removal of small-molecule organic pollutants mainly depends on adsorption purification, including volatile organic compounds such as formaldehyde, aromatic hydrocarbon and the like which are of special interest. However, the greatest disadvantage of this purification method is that the adsorption saturation phenomenon exists, and the mesh material does not continue to function after the adsorption saturation phenomenon of the organic pollutants. At present, the pollutants adsorbed on the net-shaped material are generally regenerated by adopting a regeneration modeDesorbs and thereby releases the effective adsorption surface of the material. However, this process necessitates interruption of the decontamination process in order to replace the material, and the adsorption-regeneration cycle reduces the adsorption capacity of the material, often severely after several regenerations. To solve this problem, it is possible to provide the network material with the ability to adsorb not only the pollutants, but also the adsorbed small organic pollutants to be decomposed into CO2And water, thereby providing it with a continuous adsorption capacity without a regeneration treatment.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a preparation method of a pollution treatment wire mesh, which can be used for purifying and treating organic pollutants in water and atmosphere.
The technical scheme adopted by the invention is as follows:
a preparation method of a pollution treatment silk screen comprises the following process steps:
step 1: preparing aluminum-titanium solution
1.1, sequentially adding 210-270 mL of absolute ethyl alcohol, 50-60 mL of isopropanol and 5-9 g of surfactant Span60 into a 500mL beaker, and stirring at normal temperature to form a solution A;
1.2 respectively adding 19-22 mL of isopropyl titanate and 10-15 g of aluminum isopropoxide into the solution A, and fully stirring to form a transparent solution, namely an aluminum-titanium solution;
step 2: preparing samarium chloride solution
2.1 adding 35-45 mL of deionized water and 7-11 g of samarium chloride into a 100mL beaker, and stirring at room temperature to form a solution B;
2.2 adding 20-26 mL of isopropanol and 2-5 g of hexadecyl trimethyl ammonium chloride into the solution B, and stirring to form a transparent solution, namely a samarium chloride solution.
And step 3: asbestos screen film
3.1 adding the samarium chloride solution into a beaker filled with an aluminum-titanium solution, and fully stirring to form a solution C;
3.2 paving a square asbestos wire mesh with the side length of 5cm on quantitative filter paper, dripping the solution C on the asbestos wire mesh until the wire mesh is completely covered, and aging in the air for 2 hours;
3.3 drying the asbestos silk screen and quantitative filter paper together at 110 ℃ for 10 h;
and 3.4, calcining the dried asbestos wire mesh and quantitative filter paper at 710-920 ℃ for 2-5 hours, and naturally cooling to room temperature to obtain the pollution treatment wire mesh.
The asbestos silk screen is a square grid-shaped screen formed by weaving asbestos silk with the diameter of 0.5-2 mm, and the distance between the asbestos silk is 2-8 mm.
The various chemical raw materials are pure materials.
Compared with the prior art, the invention has the advantages that:
the coating with photocatalytic purification activity is prepared on the asbestos silk screen by optimizing the raw materials and the preparation process. The coating has strong binding force with the asbestos silk screen, good compatibility and no adverse effect. The prepared pollution treatment silk screen has the capability of decomposing and purifying organic pollutants under illumination on the basis of keeping the strength, corrosion resistance and flexibility of the asbestos silk screen. The pollution control wire mesh can be widely used for removing and purifying various organic pollutants in air and water.
Detailed Description
Embodiment 1 a method for preparing a pollution control screen, comprising the following process steps:
step 1: preparing aluminum-titanium solution
1.1, sequentially adding 210mL of absolute ethyl alcohol, 50mL of isopropanol and 5g of surfactant Span60 into a 500mL beaker, and stirring at normal temperature to form a solution A;
1.2 respectively adding 19mL of isopropyl titanate and 10g of aluminum isopropoxide into the solution A, and fully stirring to form a transparent solution, namely an aluminum-titanium solution;
step 2: preparing samarium chloride solution
2.1 adding 35mL of deionized water and 7g of samarium chloride into a 100mL beaker, and stirring at room temperature to form a solution B;
2.2 to solution B, 20mL of isopropanol and 2g of cetyltrimethylammonium chloride were added and stirred to form a clear solution, i.e., a samarium chloride solution.
And step 3: asbestos screen film
3.1 adding the samarium chloride solution into a beaker filled with an aluminum-titanium solution, and fully stirring to form a solution C;
3.2 paving a square asbestos wire mesh with the side length of 5cm on quantitative filter paper, dripping the solution C on the asbestos wire mesh until the wire mesh is completely covered, and aging in the air for 2 hours;
3.3 drying the asbestos silk screen and quantitative filter paper together at 110 ℃ for 10 h;
3.4 calcining the dried asbestos wire mesh and quantitative filter paper at 710 ℃ for 2h, and naturally cooling to room temperature to obtain the pollution treatment wire mesh.
The asbestos silk screen is a latticed screen formed by weaving asbestos silk with the diameter of 0.5mm, and the spacing between the asbestos silk is 2 mm.
Embodiment 2 a method for preparing a pollution control screen, comprising the following process steps:
step 1: preparing aluminum-titanium solution
1.1, adding 230mL of absolute ethyl alcohol, 55mL of isopropanol and 7g of surfactant Span60 into a 500mL beaker in sequence, and stirring at normal temperature to form a solution A;
1.2 respectively adding 20mL of isopropyl titanate and 13g of aluminum isopropoxide into the solution A, and fully stirring to form a transparent solution, namely an aluminum-titanium solution;
step 2: preparing samarium chloride solution
2.1 adding 39mL of deionized water and 9g of samarium chloride into a 100mL beaker, and stirring at room temperature to form a solution B;
2.2 to solution B, 23mL of isopropanol and 3g of cetyltrimethylammonium chloride were added and stirred to form a clear solution, i.e., a samarium chloride solution.
And step 3: asbestos screen film
3.1 adding the samarium chloride solution into a beaker filled with an aluminum-titanium solution, and fully stirring to form a solution C;
3.2 paving a square asbestos wire mesh with the side length of 5cm on quantitative filter paper, dripping the solution C on the asbestos wire mesh until the wire mesh is completely covered, and aging in the air for 2 hours;
3.3 drying the asbestos silk screen and quantitative filter paper together at 110 ℃ for 10 h;
3.4 calcining the dried asbestos wire mesh and quantitative filter paper at 800 ℃ for 3h, and naturally cooling to room temperature to obtain the pollution treatment wire mesh.
The asbestos silk screen is a grid-shaped screen formed by weaving asbestos silk with the diameter of 1mm, and the spacing between the asbestos silk is 4 mm.
Embodiment 3 a method for preparing a pollution control screen, comprising the following process steps:
step 1: preparing aluminum-titanium solution
1.1, adding 270mL of absolute ethyl alcohol, 60mL of isopropanol and 9g of surfactant Span60 into a 500mL beaker in sequence, and stirring at normal temperature to form a solution A;
1.2 respectively adding 22mL of isopropyl titanate and 15g of aluminum isopropoxide into the solution A, and fully stirring to form a transparent solution, namely an aluminum-titanium solution;
step 2: preparing samarium chloride solution
2.1 adding 45mL of deionized water and 11g of samarium chloride into a 100mL beaker, and stirring at room temperature to form a solution B;
2.2 to solution B, 26mL of isopropanol and 5g of cetyltrimethylammonium chloride were added and stirred to form a clear solution, i.e., a samarium chloride solution.
And step 3: asbestos screen film
3.1 adding the samarium chloride solution into a beaker filled with an aluminum-titanium solution, and fully stirring to form a solution C;
3.2 paving a square asbestos wire mesh with the side length of 5cm on quantitative filter paper, dripping the solution C on the asbestos wire mesh until the wire mesh is completely covered, and aging in the air for 2 hours;
3.3 drying the asbestos silk screen and quantitative filter paper together at 110 ℃ for 10 h;
3.4 calcining the dried asbestos wire mesh and quantitative filter paper at 920 ℃ for 5h, and then naturally cooling to room temperature to obtain the pollution treatment wire mesh.
The asbestos silk screen is a square grid mesh woven by asbestos silk with the diameter of 2mm, and the spacing between the asbestos silk is 8 mm.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention in the specification or other related fields directly or indirectly are included in the scope of the present invention.
Claims (2)
1. The preparation method of the pollution treatment silk screen is characterized by comprising the following process steps:
step 1: preparing aluminum-titanium solution
1.1, sequentially adding 210-270 mL of absolute ethyl alcohol, 50-60 mL of isopropanol and 5-9 g of surfactant Span60 into a 500mL beaker, and stirring at normal temperature to form a solution A;
1.2 respectively adding 19-22 mL of isopropyl titanate and 10-15 g of aluminum isopropoxide into the solution A, and fully stirring to form a transparent solution, namely an aluminum-titanium solution;
step 2: preparing samarium chloride solution
2.1 adding 35-45 mL of deionized water and 7-11 g of samarium chloride into a 100mL beaker, and stirring at room temperature to form a solution B;
2.2 adding 20-26 mL of isopropanol and 2-5 g of hexadecyl trimethyl ammonium chloride into the solution B, and stirring to form a transparent solution, namely a samarium chloride solution;
and step 3: asbestos screen film
3.1 adding the samarium chloride solution into a beaker filled with an aluminum-titanium solution, and fully stirring to form a solution C;
3.2 paving a square asbestos wire mesh with the side length of 5cm on quantitative filter paper, dripping the solution C on the asbestos wire mesh until the wire mesh is completely covered, and aging in the air for 2 hours;
3.3 drying the asbestos silk screen and quantitative filter paper together at 110 ℃ for 10 h;
and 3.4, calcining the dried asbestos wire mesh and quantitative filter paper at 710-920 ℃ for 2-5 hours, and naturally cooling to room temperature to obtain the pollution treatment wire mesh.
2. The method of claim 1, wherein the asbestos screen is a grid of 0.5-2 mm diameter asbestos threads woven at 2-8 mm spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810528436.6A CN108636396B (en) | 2018-05-29 | 2018-05-29 | Preparation method of pollution treatment silk screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810528436.6A CN108636396B (en) | 2018-05-29 | 2018-05-29 | Preparation method of pollution treatment silk screen |
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| CN108636396A CN108636396A (en) | 2018-10-12 |
| CN108636396B true CN108636396B (en) | 2021-02-02 |
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| CN1654118A (en) * | 2004-02-13 | 2005-08-17 | 浙江大学 | Preparation method of stainless steel screen load TiO2 nanometer membrane photochemical catalyst |
| CN105749901A (en) * | 2016-03-14 | 2016-07-13 | 中国神华能源股份有限公司 | Optical fiber with surface loading titanium dioxide modified by rare earth and preparation method of optical fiber |
| CN106006659A (en) * | 2016-05-20 | 2016-10-12 | 沈阳理工大学 | Preparation method of titanium-aluminum molecular sieve photocatalyst |
| CN106006660A (en) * | 2016-05-25 | 2016-10-12 | 沈阳理工大学 | Method for preparing samarium titanate molecular sieve |
| CN106975473A (en) * | 2017-05-27 | 2017-07-25 | 苏州思美特表面材料科技有限公司 | The supported materials catalyst of network structure |
| CN108057430A (en) * | 2017-12-08 | 2018-05-22 | 合肥宏润环保科技有限公司 | It is a kind of to prepare mesoporous Al2O3/TiO2The method of composite material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016004191A1 (en) * | 2014-07-02 | 2016-01-07 | General Nano Llc | Method for making a catalyst metal substrate for growth of carbon nanotubes |
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2018
- 2018-05-29 CN CN201810528436.6A patent/CN108636396B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654118A (en) * | 2004-02-13 | 2005-08-17 | 浙江大学 | Preparation method of stainless steel screen load TiO2 nanometer membrane photochemical catalyst |
| CN105749901A (en) * | 2016-03-14 | 2016-07-13 | 中国神华能源股份有限公司 | Optical fiber with surface loading titanium dioxide modified by rare earth and preparation method of optical fiber |
| CN106006659A (en) * | 2016-05-20 | 2016-10-12 | 沈阳理工大学 | Preparation method of titanium-aluminum molecular sieve photocatalyst |
| CN106006660A (en) * | 2016-05-25 | 2016-10-12 | 沈阳理工大学 | Method for preparing samarium titanate molecular sieve |
| CN106975473A (en) * | 2017-05-27 | 2017-07-25 | 苏州思美特表面材料科技有限公司 | The supported materials catalyst of network structure |
| CN108057430A (en) * | 2017-12-08 | 2018-05-22 | 合肥宏润环保科技有限公司 | It is a kind of to prepare mesoporous Al2O3/TiO2The method of composite material |
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Effective date of registration: 20230113 Address after: 053000 No. 898 Zhenggang Road, Anping County, Hengshui City, Hebei Province Patentee after: ANPING HAOCHANG SCREEN MESH MANUFACTURING CO.,LTD. Address before: 230000 Woye Garden Commercial Building B-1017, 81 Ganquan Road, Shushan District, Hefei City, Anhui Province Patentee before: HEFEI JINGLONG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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