WO2013097403A1 - 一种制备磁性氧化铁的方法 - Google Patents
一种制备磁性氧化铁的方法 Download PDFInfo
- Publication number
- WO2013097403A1 WO2013097403A1 PCT/CN2012/075809 CN2012075809W WO2013097403A1 WO 2013097403 A1 WO2013097403 A1 WO 2013097403A1 CN 2012075809 W CN2012075809 W CN 2012075809W WO 2013097403 A1 WO2013097403 A1 WO 2013097403A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- solution
- iron oxide
- magnetic iron
- preparing magnetic
- hydroxide solution
- Prior art date
Links
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000000243 solution Substances 0.000 claims abstract description 91
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims abstract description 44
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 30
- 239000003513 alkali Substances 0.000 claims abstract description 26
- 230000003647 oxidation Effects 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims abstract description 7
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 30
- 239000012266 salt solution Substances 0.000 claims description 27
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 239000002585 base Substances 0.000 claims 1
- 238000005406 washing Methods 0.000 abstract description 6
- 238000001354 calcination Methods 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 5
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract 1
- 229910001882 dioxygen Inorganic materials 0.000 abstract 1
- 239000011259 mixed solution Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 45
- 229910021519 iron(III) oxide-hydroxide Inorganic materials 0.000 description 37
- CUPCBVUMRUSXIU-UHFFFAOYSA-N [Fe].OOO Chemical compound [Fe].OOO CUPCBVUMRUSXIU-UHFFFAOYSA-N 0.000 description 36
- 235000013980 iron oxide Nutrition 0.000 description 26
- 239000000047 product Substances 0.000 description 13
- 239000007864 aqueous solution Substances 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- 239000012065 filter cake Substances 0.000 description 6
- 238000006477 desulfuration reaction Methods 0.000 description 5
- 230000023556 desulfurization Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- 229910002588 FeOOH Inorganic materials 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
- 238000011005 laboratory method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 241001024304 Mino Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005048 flame photometry Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- IGHXQFUXKMLEAW-UHFFFAOYSA-N iron(2+) oxygen(2-) Chemical compound [O-2].[Fe+2].[Fe+2].[O-2] IGHXQFUXKMLEAW-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide (Fe2O3)
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
Definitions
- the present invention relates in particular to a method for preparing magnetic iron oxide Fe 21 .333 0 32 , which belongs to the technical field of desulfurization.
- the amorphous iron oxyhydroxide prepared under the above operating conditions has a low purity, and a large amount of iron oxide and other crystalline iron oxyhydroxide are also present in the product, thereby causing low purity and sulfur when used as a desulfurizing agent. The problem is low and cannot be regenerated.
- the main reason for this phenomenon is that the preparation of amorphous iron oxyhydroxide is strongly influenced by operating conditions such as pH, temperature, and feed rate.
- a method for preparing magnetic iron oxide Fe 21 .333 0 32 includes the following steps:
- step (3) After the reaction in step (3) is completed, an oxygen-containing gas is introduced into the solution for oxidation, and the pH of the solution is controlled between 6-8 until the end of oxidation;
- the product obtained in the step (5) may be calcined at 250 to 400 °C.
- the calcination temperature in the step (6) is 300 to 350 °C.
- the hydroxide is a hydroxide of a Group IA or Group III element.
- the concentration of the ferrous salt solution is 1.3-1.8 mol/L, and the concentration of the hydroxide solution is 4-6 mol/L.
- step (4) the pH of the solution is controlled to be between 6 and 8 using a hydroxide solution.
- the hydroxide solution has a concentration of 4 to 6 mol/L and a feed rate of 10 to 20 ml/min.
- the feed rate of the ferrous salt solution is controlled to be 200-300 ml/min, and the feed rate of the hydroxide solution is 50-60 ml/min.
- the alkali ratio of the hydroxide solution added to the steps (3) and (4) to the ferrous salt solution is 1.05-1.25.
- the drying temperature in the step (5) does not exceed 90 °C.
- step (4) water is added to the solution before oxygen is introduced into the solution for oxidation.
- the oxidation time is 10-15ho.
- the oxygen-containing gas is air, and the air is introduced in an amount of not less than 700 L/h.
- the method for preparing the magnetic iron oxide Fe 21 .333 0 32 described in the present invention can be prepared by the steps (1) - (5), and the preparation of the amorphous iron oxyhydroxide can be It is considered to be divided into two steps: First step, Fe 2+ precipitation Description
- the Fe(OH) 2 is formed , and in the second step, Fe(OH) 2 is oxidized by air to form FeOOH.
- the particle size and formation environment of the Fe(OH) 2 particles before the oxidation starts will affect the purity and performance of the prepared amorphous iron oxyhydroxide. Therefore, in the first step, there are two essential Factors: 1. Reaction temperature; 2.
- FeOOH nucleates on the surface of Fe(OH) 2 particles.
- Fe 2+ generates green rust, and the chemical composition of green rust is:
- Green rust is an unstable compound, and the oxidation product may be ⁇ , ⁇ , ⁇ , amorphous - iron oxyhydroxide or Fe 3 0 4 depending on the oxidation rate, pH and temperature.
- the Applicant has found that the formation of amorphous iron oxyhydroxide can be further promoted by controlling the process conditions in the oxidation process, specifically as follows: (1) The pH is adjusted to 6-8 because the reaction is carried out in this pH range. Fe(OH) 2 can be rapidly oxidized, which is favorable for the formation of amorphous FeOOH. If the pH is too high, ferrite species (such as Fe 3 0 4 , Na 2 Fe 2 0 4 ) are formed. Therefore, the present invention The preparation method in the present invention effectively improves the purity of the amorphous FeOOH by controlling the pH between 6 and 8. (2) When the reaction temperature is controlled to not exceed 30 °C, the reaction temperature is too high, and iron black is easily formed.
- the present invention controls the concentration of the ferrous salt solution to be 1.3-1.8 mol/L, the concentration of the hydroxide solution is 4-6 mol/L; and simultaneously controls the feeding rate of the ferrous salt solution.
- the feed rate of the hydroxide solution is from 200 to 300 ml/min, which is from 90 to 100 ml/min.
- the concentration and feed rate of the hydroxide solution and the ferrous salt solution are controlled so that the alkali ratio of the raw material is maintained within a suitable range. Here, it is particularly important to control the feed rate of the hydroxide solution.
- the present invention is also defined in the step (4), the concentration of the hydroxide solution is 4-6 mol/L, and the feed rate is 10-20 ml/mino.
- the amorphous iron oxyhydroxide prepared by the invention has a high purity and can reach 90-100%.
- the step (6) is to calcine the product obtained in the step (5) at 250"400 ° C because the calcination temperature is Below 250 ° C, the magnetic iron oxide Fe 21 333 0 32 produced is of lower purity, and if the calcination temperature is greater than 400 ⁇ , the magnetic properties of the product are significantly reduced, and ⁇ -Fe 2 0 3 is easily formed, in order to ensure magnetic oxidation.
- the iron Fe 21 .333 0 32 has high purity and magnetic properties, and the present invention is set to have a calcination temperature of from 250 to 400 ° C, and further preferably from 300 to 350 ° C.
- the method for preparing magnetic iron oxide described in the present invention has the following advantages: (1) Preparation of a magnetic iron oxide replacement page (Article 26) Instruction manual
- the method of Fe 21 . 333 0 32 is simple and suitable for industrial mass production; (2)
- the prepared magnetic iron oxide Fe 21 . 333 0 32 has high purity, so its sulfur capacity is higher when used as a desulfurizing agent. Can be regenerated.
- Figure 1 shows the XRD spectrum of the magnetic iron oxide Fe 21 .333 0 32 of the present invention.
- the method for preparing magnetic iron oxide Fe 21 .333 0 32 described in this embodiment includes:
- step (3) After the reaction in step (3) is finished, add 200ml of water, then turn on the blast pump, ventilate with air, control the ventilation at 700L/h, and oxidize for about 10 hours. Control during oxidation.
- the pH of the solution, the pH control interval is 6 pH 8, when the pH is ⁇ 6, the above sodium hydroxide solution is added, the speed of the additional alkali solution is controlled at 15 ml/min, and the pH is about 7.8, the addition is stopped, when Fe 2+ /Fe, s is less than 1%, then the material is completely oxidized;
- the alkali ratio of the hydroxide solution and the ferrous salt solution added in steps (3) and (4) in this embodiment is 1.05;
- the product obtained in the step (5) may be calcined at 250 °C.
- the method for preparing magnetic iron oxide Fe 21 .333 0 32 described in this embodiment includes:
- step (3) After the reaction in step (3) is finished, add 200ml of water, then turn on the blast pump, ventilate with air, control the ventilation at 700L/h, and oxidize for about 10 hours. Control during oxidation.
- the pH of the solution, the pH control interval is 6 pH 8, when the pH is ⁇ 6, the above sodium hydroxide solution is added, and the speed of the additional alkali solution is controlled at 15 ml/min, pH.
- the alkali ratio of the hydroxide solution and the ferrous salt solution added in steps (3) and (4) in this embodiment is 1.25;
- the product obtained in the step (5) can be calcined at 400 °C.
- the method for preparing magnetic iron oxide Fe 21 .333 0 32 described in this embodiment includes:
- step (3) After the reaction in step (3) is completed, 150 ml of water is added, then the blast pump is turned on, and air is oxidized. The ventilation is controlled at 700 L/h, and the oxidation time is about 10 hours. The oxidation reaction is controlled.
- the pH of the solution, the pH control interval is 6 pH 8, when the pH is ⁇ 6, the above sodium hydroxide solution is added, the speed of the additional alkali solution is controlled at 15 ml/min, and the pH is about 7.8, and the addition is stopped. + ⁇ less than 1%, depending on the complete oxidation of the material;
- the alkali ratio of the hydroxide solution and the ferrous salt solution added in steps (3) and (4) in this embodiment is 1.05;
- the product obtained in the step (5) can be calcined at 300 °C.
- the method for preparing magnetic iron oxide Fe 21 .333 0 32 described in this embodiment includes:
- step (3) After the reaction in step (3) is completed, add 200 ml of water, then turn on the air blower pump, and ventilate with air.
- the ventilation is controlled at 720 L/h, and the oxidation time is about 15 hours.
- the pH of the solution, the pH control interval is 6 pH 8, when the pH is ⁇ 6, the above sodium hydroxide solution is added, the speed of the additional alkali solution is controlled at 10 ml/min, and the pH is about 7.8, and the addition is stopped. + ⁇ less than 1%, depending on the complete oxidation of the material;
- the alkali ratio of the hydroxide solution and the ferrous salt solution added in steps (3) and (4) in this embodiment is 1.15;
- the product obtained in the step (5) can be calcined at 350 °C.
- the method for preparing magnetic iron oxide Fe 21 .333 0 32 described in this embodiment includes:
- step (3) After the reaction in step (3) is completed, add 100 ml of water, then turn on the air blower pump, and ventilate with air.
- the ventilation is controlled at 720 L/h, the oxidation time is about 15 hours, and the oxidation reaction is controlled.
- the pH of the solution, the pH control interval is 6 pH 8, when the pH is ⁇ 6, the above sodium hydroxide solution is added, the speed of the additional alkali solution is controlled at 15 ml/min, and the pH is about 7.8, the addition is stopped, when Fe 2+ /Fe, s is less than 1%, then the material is completely oxidized;
- the alkali ratio of the hydroxide solution and the ferrous salt solution added in steps (3) and (4) in this embodiment is 1.25;
- the step (3) is carried out by cocurrently reacting a hydroxide solution and a ferrous salt solution, wherein the parallel flow means that the hydroxide solution and the ferrous salt solution are respectively passed through two
- the inflow tube is fed to the reactor for mixing. It is noted that the hydroxide solution and the ferrous salt solution to be added in the step (3) need to be fed to the reactor at the same time.
- the product prepared in the above examples was characterized by XRD test, and the obtained spectrum is shown in Fig. 1.
- the characterization results show that the product is Fe 21 .333 0 32 .
- the present invention also determines the purity of the magnetic iron oxide Fe 21 .333 0 32 prepared in the above examples, and the results show that the content of the magnetic iron oxide Fe 21 .333 0 32 in the product is 95-98 wt. %.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Compounds Of Iron (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2861969A CA2861969C (en) | 2011-12-29 | 2012-05-21 | Method for preparing magnetic iron oxide |
US14/369,647 US9315392B2 (en) | 2011-12-29 | 2012-05-21 | Method for preparing magnetic iron oxide |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201110450768.5A CN103183388B (zh) | 2011-12-29 | 2011-12-29 | 一种制备磁性氧化铁的方法 |
CN201110450768.5 | 2011-12-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013097403A1 true WO2013097403A1 (zh) | 2013-07-04 |
Family
ID=48674879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2012/075809 WO2013097403A1 (zh) | 2011-12-29 | 2012-05-21 | 一种制备磁性氧化铁的方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9315392B2 (zh) |
CN (1) | CN103183388B (zh) |
CA (1) | CA2861969C (zh) |
WO (1) | WO2013097403A1 (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105597516B (zh) * | 2016-02-29 | 2020-01-10 | 北京三聚环保新材料股份有限公司 | 一种磁性氧化铁脱硫剂及其制备方法 |
CN106731833B (zh) * | 2016-12-28 | 2019-03-29 | 北京三聚环保新材料股份有限公司 | 一种湿法脱硫富液的再生工艺 |
CN108187143A (zh) * | 2018-02-09 | 2018-06-22 | 福州大学 | 一种兼具磁热效应和原位诱导成骨的多功能复合材料及其制备方法 |
CN110064395A (zh) * | 2019-01-29 | 2019-07-30 | 吉林师范大学 | 一种具备磁性分离功能的可见光催化剂的制备方法 |
CN113793751A (zh) * | 2021-09-09 | 2021-12-14 | 北京化工大学 | 一种磁性球形颗粒的制备方法 |
CN117229820B (zh) * | 2023-09-22 | 2024-03-22 | 山东海嘉石油化工有限公司 | 一种适用于煤层气羟基氧化铁脱硫剂及其制备方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1049142A (zh) * | 1989-07-31 | 1991-02-13 | 重庆大学 | 用副产亚铁盐制备高纯磁性磁氧化铁 |
CN101274781A (zh) * | 2007-03-27 | 2008-10-01 | Tdk株式会社 | 羟基氧化铁粒子的制造方法 |
CN101585557A (zh) * | 2008-05-23 | 2009-11-25 | 北京三聚环保新材料股份有限公司 | 一种磁性氧化铁制备方法及其制得的磁性氧化铁脱硫剂 |
CN101767829A (zh) * | 2008-12-30 | 2010-07-07 | 北京三聚环保新材料股份有限公司 | 含无定形羟基氧化铁的物料的制备及其再生方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1102421C (zh) * | 2000-11-28 | 2003-03-05 | 中国科学院山西煤炭化学研究所 | 铁系金属氧化物用作脱硫剂的方法 |
CN101766946B (zh) * | 2008-12-30 | 2012-11-28 | 北京三聚环保新材料股份有限公司 | 一种常温下脱除气体中的硫化氢的工艺 |
CN101767831B (zh) * | 2008-12-30 | 2013-04-17 | 北京三聚环保新材料股份有限公司 | 含无定形羟基氧化铁的物料的制备及其再生方法 |
EP2383227B1 (en) | 2008-12-30 | 2018-01-24 | Beijing Sanju Environmental Protection and New Material Co., Ltd. | Preparation of material containing amorphous iron oxyhydroxide |
-
2011
- 2011-12-29 CN CN201110450768.5A patent/CN103183388B/zh active Active
-
2012
- 2012-05-21 WO PCT/CN2012/075809 patent/WO2013097403A1/zh active Application Filing
- 2012-05-21 CA CA2861969A patent/CA2861969C/en not_active Expired - Fee Related
- 2012-05-21 US US14/369,647 patent/US9315392B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1049142A (zh) * | 1989-07-31 | 1991-02-13 | 重庆大学 | 用副产亚铁盐制备高纯磁性磁氧化铁 |
CN101274781A (zh) * | 2007-03-27 | 2008-10-01 | Tdk株式会社 | 羟基氧化铁粒子的制造方法 |
CN101585557A (zh) * | 2008-05-23 | 2009-11-25 | 北京三聚环保新材料股份有限公司 | 一种磁性氧化铁制备方法及其制得的磁性氧化铁脱硫剂 |
CN101767829A (zh) * | 2008-12-30 | 2010-07-07 | 北京三聚环保新材料股份有限公司 | 含无定形羟基氧化铁的物料的制备及其再生方法 |
Also Published As
Publication number | Publication date |
---|---|
CA2861969A1 (en) | 2013-07-04 |
US9315392B2 (en) | 2016-04-19 |
CN103183388A (zh) | 2013-07-03 |
US20140361213A1 (en) | 2014-12-11 |
CN103183388B (zh) | 2016-01-06 |
CA2861969C (en) | 2017-02-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103183387B (zh) | 一种制备无定形羟基氧化铁的方法 | |
WO2013097403A1 (zh) | 一种制备磁性氧化铁的方法 | |
US8926874B2 (en) | Porous manganese oxide absorbent for lithium having spinel type structure and a method of manufacturing the same | |
CN108380170B (zh) | 一种金属氧化物掺杂的氧化铝及其制备和应用 | |
EP2383227B1 (en) | Preparation of material containing amorphous iron oxyhydroxide | |
CN111905719A (zh) | 新型锰基催化剂及其制备方法 | |
CN103272553B (zh) | 一种用于除去水体中砷的磁性纳米氧化铁吸附剂的制备方法 | |
CN108767218A (zh) | 一种电池用镍钴铝氢氧化物制备的后处理方法 | |
CN102786095B (zh) | 制备四氧化三锰的方法 | |
CN115501853B (zh) | 一种多级孔结构镧基氢氧化物吸附材料及制备方法和应用 | |
CN108516591A (zh) | 一种大比表面积羟基氧化铁精脱硫剂及其制备方法 | |
CN103626222B (zh) | 一种微米级二氧化锡粉体的制备方法 | |
CN109046357A (zh) | 一种金属氧化物-ldh负载型催化剂的制备方法 | |
CN112607785A (zh) | 一种MnFe2O4/C纳米复合微球及其制备方法 | |
CN116199270B (zh) | 一种减少钴氧化物生产过程废水的处理工艺 | |
CN101020580A (zh) | 纳米级稀土氧化物的制备方法 | |
JP4843292B2 (ja) | 酸成分を含む微粒子四三酸化コバルトおよびその製造方法 | |
CN106430325B (zh) | 一种磁性氧化铁的制备方法 | |
CN113372964A (zh) | 氧化铁基脱硫剂的制备方法及组合物的用途 | |
JP5628016B2 (ja) | 銅触媒の製造方法および銅触媒前駆体の熟成方法 | |
CN115041127B (zh) | 一种磁性铈基金属氧化物吸附剂及其制备方法和应用 | |
CN113198414B (zh) | 一种水合氧化铬吸附剂、其制备方法及用途 | |
CN115007120B (zh) | 一种选择性吸附锰的介孔复合材料及其制备方法与应用 | |
CN111392742B (zh) | 一种分子筛材料am-6及其制备方法和应用 | |
CN114904526B (zh) | 自缓冲系统Co-MOOH@MxOy整体材料的制备方法及应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12861807 Country of ref document: EP Kind code of ref document: A1 |
|
DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
ENP | Entry into the national phase |
Ref document number: 2861969 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14369647 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 12861807 Country of ref document: EP Kind code of ref document: A1 |