Preparation method of ferrimanganic composite oxides with three-phase catalytic function

A composite oxide, iron-manganese technology, applied in chemical instruments and methods, water treatment of special compounds, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of limited electron capture, slow transmission speed, low solubility, etc. problem, to achieve the effect of improving the catalytic effect

Inactive Publication Date: 2018-11-13
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solubility of oxygen in water, especially in sewage is very low, and the transmission speed is very slow,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0010] Example 1

[0011] Under 50℃ water bath stirring conditions, add 1.0mol / L sodium carbonate solution dropwise to the iron and manganese concentration 1.0mol / L and 0.6mol / L ferric chloride and manganese chloride mixed solution, control Na + / Fe 3+ =4, after the dropwise addition is completed, the product is continued to age in the water bath for 36 hours to prepare a polymerized hydroxyferromanganese solution; add sodium dodecylbenzene sulfonate solid and dodecane to the prepared polymerized hydroxyferromanganese solution The amount of sodium benzene sulfonate is controlled to be 6 times the amount of ferric chloride, stirred for 3 hours, precipitated and separated, washed the solid 3 times with distilled water, and dried at 105°C to obtain dodecyl sulfonate combined iron manganese solid , And then placed in a muffle furnace, under the protection of nitrogen, calcine at 550 ℃ for 5h, switch nitrogen to air, and control the amount of air to 50mL / g dodecylbenzenesulfonate comb...

Example Embodiment

[0013] Example 2

[0014] Under the condition of stirring in a water bath at 40℃, add 0.5mol / L sodium carbonate solution dropwise to the iron and manganese concentration 0.5mol / L and 0.3mol / L ferric chloride and manganese chloride mixed solution, control Na + / Fe 3+ =2, after the dropwise addition is completed, the product is continued to age in the water bath for 24 hours to prepare a polymerized hydroxyferromanganese solution; add sodium dodecylbenzene sulfonate solid and dodecane to the prepared polymerized hydroxyferromanganese solution The amount of sodium benzenesulfonate is controlled to be 4 times the amount of ferric chloride, stirred for 2h, precipitated and separated, the solid was washed twice with distilled water, and dried at 105°C to obtain dodecylsulfonate bound iron manganese solid , And then placed in a muffle furnace, under the protection of nitrogen, calcine at 350 ℃ for 2h, switch nitrogen to air, and control the amount of air to 30mL / g dodecylbenzenesulfonat...

Example Embodiment

[0016] Example 3

[0017] Under the condition of stirring in a water bath at 45°C, the sodium carbonate solution with a concentration of 0.8mol / L was added dropwise to the ferric chloride and manganese chloride mixed solutions with the iron and manganese concentrations of 0.8mol / L and 0.5mol / L, respectively, to control Na + / Fe 3+ =3, after the dripping is completed, the product is continued to age for 36h in the water bath to prepare a polymerized hydroxyferromanganese solution; to the prepared polymerized hydroxyferromanganese solution, add sodium dodecylbenzene sulfonate solid, dodecane The amount of sodium benzene sulfonate is controlled to be 6 times the amount of ferric chloride, stirred for 3 hours, precipitated and separated, washed the solid 3 times with distilled water, and dried at 105°C to obtain dodecyl sulfonate combined iron manganese solid , Then placed in a muffle furnace, under the protection of nitrogen, calcine at 450 ℃ for 4h, switch nitrogen to air, and cont...

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PUM

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Abstract

The invention discloses a preparation method of ferrimanganic composite oxides with a three-phase catalytic function. The method sequentially comprises the following steps that under the water bath stirring condition, a sodium carbonate solution is dropwise added into a mixed solution of ferric chloride and manganese chloride; after the dropwise addition is completed, the product is continuously aged for 24 to 36h in a water bath; a polyhydroxy ferrimanganic solution is obtained through preparation; sodium dodecyl benzene sulfonate solids are added into the prepared polyhydroxy ferrimanganic solution; stirring is performed for 2 to 3h; precipitation and separation are performed; the solids are washed by distilled water for 2 to 3 times; drying is performed at 105 DEG C; a dodecyl sulfonatecombined ferrimanganic solid is obtained and is then put into a muffle furnace; under the nitrogen gas protection, calcination is performed for 2 to 5h at 350 to 550 DEG C; nitrogen gas is switched into air; the introduced air quantity is controlled to be 30 to 50mL/g of dodecyl sulfonate combined ferrimanganic solid; then, nitrogen gas is continuously introduced; the nitrogen gas introduction stops until the cooling is performed to room temperature; the ferrimanganic composite oxides with the three-phase catalytic function is obtained; the catalytic effect is obviously enhanced.

Description

technical field [0001] The invention relates to the field of new materials for environmental pollution control, in particular to a method for preparing an iron-manganese composite oxide with three-phase catalytic function. Background technique [0002] With the development of science and technology, toxic organic pollutants from industrial and agricultural production seriously threaten the environment and human health. It is of great significance to seek a new and efficient environmental governance technology. Photocatalytic technology has become an emerging environmental treatment technology with important application prospects due to its advantages of energy saving, high efficiency, complete pollutant degradation, and no secondary pollution. In recent years, the development of new and efficient visible light photocatalysts has become an important research content in photocatalytic technology. [0003] Semiconductor photocatalysis can degrade a variety of organic pollutant...

Claims

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Application Information

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IPC IPC(8): B01J23/889C02F1/30C02F1/72C02F101/30C02F101/34
CPCB01J23/8892B01J35/004C02F1/30C02F1/725C02F2101/308C02F2101/345C02F2305/10
Inventor 吴晓峰马建锋
Owner CHANGZHOU UNIV
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