Nanometer iron trioxide as well as preparation method and purpose of nanometer iron trioxide

A nano-iron trioxide technology, which is applied in the directions of iron oxide, chemical instruments and methods, iron oxide/iron hydroxide, etc., can solve the problems of complicated treatment process, limited popularization and application of sewage treatment process, and high cost.

Active Publication Date: 2013-01-30
W STARTECH BEIJING ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when Fenton's reagent is used for sewage treatment, a large amount of Fe(OH)3 sludge will be produced, which has th

Method used

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  • Nanometer iron trioxide as well as preparation method and purpose of nanometer iron trioxide
  • Nanometer iron trioxide as well as preparation method and purpose of nanometer iron trioxide
  • Nanometer iron trioxide as well as preparation method and purpose of nanometer iron trioxide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] S1, 0.8gFeCl 3 ·6H 2 0, 1.8g urea and 4.8g tetrabutylammonium bromide are added in the 120ml ethylene glycol respectively, are stirred to all dissolving of solid, obtain the first mixed solution;

[0042] S2, under stirring, heat the first mixed solution obtained in S1 to 195°C, continue stirring and reflux reaction, after 12 minutes, the reaction solution appears yellow precipitate, after 8 minutes, the color of the solution turns green completely, and then reflux for 0.5 hours to react End;

[0043] S3, cooling the reaction solution obtained in S2, cooling to 25°C, centrifuging to separate the solid, then washing the solid with ethanol 4 times, drying the washed solid in an oven at 80°C for 5h, and then transferring the solid to 450°C Calcined in the muffle furnace for 4 hours to obtain nano-iron sesquioxide; wherein, the nano-ferric oxide is black when taken out of the muffle furnace, and turns brick red after cooling in the air.

[0044] The prepared nanometer fe...

Embodiment 2

[0046] S1, 0.8gFeCl 3 ·6H 2 0, 1.6g urea and 4.2g tetrabutylammonium bromide are added in the 120ml ethylene glycol respectively, are stirred to all dissolving of solid, obtain the first mixed solution;

[0047] S2, under stirring, heat the first mixed solution obtained in S1 to 180°C, continue stirring and reflux reaction, after 14 minutes, the reaction solution appears yellow precipitate, after 7 minutes, the color of the solution turns green completely, and then reflux for 0.3 hours to react End;

[0048] S3, cooling the reaction liquid obtained in S2, cooling to 29°C, centrifuging to separate the solid, then washing the solid with ethanol for 5 times, drying the washed solid in a 100°C oven for 4h, and then transferring the solid to a 400°C Calcined in a muffle furnace for 3 hours to obtain nano-iron sesquioxide; wherein, the nano-iron sesquioxide is black when taken out of the muffle furnace, and turns brick red after cooling in the air.

[0049] The obtained nano-ferr...

Embodiment 3

[0051] S1, 0.8gFeCl 3 ·6H 2 0, 2.0g urea and 5.6g Tetrabutylammonium bromide are added in the 120ml ethylene glycol respectively, are stirred to all dissolving of solid, obtain the first mixed solution;

[0052] S2, under stirring, heat the first mixed solution obtained in S1 to 210°C, continue to stir and reflux the reaction, after 15 minutes, a yellow precipitate appears in the reaction solution, after 7 minutes, the color of the solution turns green completely, and then reflux for 1.0 hour to react End;

[0053] S3, cooling the reaction solution obtained in S2, cooling to 27°C, centrifuging to separate the solid, then washing the solid with ethanol for 3 times, drying the washed solid in a 60°C oven for 6h, and then transferring the solid to 500°C Calcined in the muffle furnace for 3.2 hours to obtain nanometer iron sesquioxide; wherein, the nanometer iron oxide is black when taken out of the muffle furnace, and turns brick red after cooling in the air.

[0054] The obtain...

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Abstract

The invention provides nanometer iron trioxide as well as a preparation method and a purpose of the nanometer iron trioxide. The nanometer iron trioxide has the following structural formula of alpha-Fe2O3, and X-ray powder diffractions obtained through measurement by using a Cu-K alpha ray via the nanometer iron trioxide have characteristic peaks through display when 2 theta is 24.1 degrees, 34.4 degrees, 36.0 degrees, 41.2 degrees, 50.2 degrees, 53.3 degrees, 57.6 degrees, 62.2 degrees and 63.7 degrees. When the nanometer iron trioxide provided by the invention is adopted for carrying out sewage treatment, the advantage of high sewage treatment efficiency is realized, in addition, the nanometer iron trioxide is solid, the reproducible performance is good, and the repeated utilization can be realized, so the sewage treatment cost can be reduced, and in addition, the advantage of simplicity in operation is also realized.

Description

technical field [0001] The invention relates to a nano iron oxide, in particular to a nano ferric oxide, its preparation method and application. Background technique [0002] In recent years, with the rapid development of industry, the problem of sewage pollution has become increasingly serious. Sewage contains a large amount of toxic, harmful and refractory organic substances, which pose serious hazards to human health and the ecological environment. At present, an effective method for treating sewage is to use Fenton's reagent for sewage treatment, and degrade various organic pollutants in sewage through the oxidation of Fenton's reagent, so that the treated sewage can be recycled. [0003] However, when Fenton's reagent is used for sewage treatment, a large amount of Fe(OH)3 sludge will be produced, which has the disadvantages of complex treatment process and high cost, thus limiting the extensive application of this sewage treatment process. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): C01G49/06B01J23/745C02F1/32
Inventor 史瑞明
Owner W STARTECH BEIJING ENVIRONMENTAL TECH
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