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Magnetic compound diatomite material and preparation method thereof

A technology of composite diatomite and diatomite, which is applied in chemical instruments and methods, hybrid capacitor electrodes, physical/chemical process catalysts, etc., can solve the problems of few high value-added products, single product variety, and low grade, and achieve The effect of uniform and controllable size, consistent shape and good electrochemical performance

Active Publication Date: 2017-07-18
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Although the unique diatom shell structure determines that it can be widely used in many industrial fields, compared with more mature technologies abroad, domestic research is still lagging behind, and there is still a big gap
At present, the grade of diatomite products is low, and the product variety is relatively single, and there are few high value-added products represented by diatomite filter aids, especially the research on the preparation of functional materials using diatomite as raw material is even more insufficient

Method used

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  • Magnetic compound diatomite material and preparation method thereof
  • Magnetic compound diatomite material and preparation method thereof
  • Magnetic compound diatomite material and preparation method thereof

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preparation example Construction

[0049] The present invention also provides a method for preparing the magnetic composite diatomite material described in the above technical solution, comprising the following steps:

[0050] a) Mix the carrier with an aqueous solution of manganese salt, and perform a hydrothermal reaction to obtain nano-MnO 2 / Diatomite composite material; the carrier is diatomite; the shell size of the diatomite is 10 μm to 50 μm, and the specific surface area is 1m 2 / g~4m 2 / g;

[0051] b) the nano MnO obtained in step a) 2 / diatomite composite material reacts with ferrous salt in a solvent to obtain a solid product;

[0052] c) Calcining the solid product obtained in step b) to obtain a magnetic composite diatomite material.

[0053] In the present invention, firstly, the carrier is mixed with the aqueous solution of manganese salt, and the hydrothermal reaction is carried out to obtain nanometer MnO 2 / Diatomaceous earth composite material. In the present invention, the carrier is ...

Embodiment 1

[0067] (1) Disperse 30 mg of diatomaceous earth in 30 mL of 0.01 M potassium permanganate solution, stir with a magnetic stirrer for 10 min, then conduct a hydrothermal reaction at 140 ° C for 13 h, wash the reacted product with water and ethanol, and then Dry at 60°C to obtain nano-MnO 2 / Diatomaceous earth composite material;

[0068] (2) the above-mentioned nano-MnO 2 / Diatomite composite material is dispersed in FeSO with a dosage ratio of 5mg: 56mL: 8mL 4 / ethylene glycol / water solution, using a magnetic stirrer to stir for 10 minutes, then conduct a hydrothermal reaction at 100°C for 7 hours, wash the reacted solid product with water and ethanol, dry it at 60°C, and put it in a tube furnace Calcined at 350°C for 4 hours and cooled to obtain a magnetic composite diatomite material.

[0069] Example 1 of the present invention obtains the scanning electron microscope picture of magnetic composite diatomite material as Figure 1~2 As shown, among them, figure 1 Obtain ...

Embodiment 2

[0071] (1) Disperse 30 mg of diatomaceous earth in 30 mL of 0.05 M potassium permanganate solution, stir with a magnetic stirrer for 10 min, then conduct a hydrothermal reaction at 150 ° C for 12 h, wash the reacted product with water and ethanol, and then Dry at 60°C to obtain nano-MnO 2 / Diatomaceous earth composite material;

[0072] (2) the above-mentioned nano-MnO 2 / Diatomite composite material is dispersed in FeSO with a dosage ratio of 20mg: 56mL: 8mL 4 / ethylene glycol / water solution, using a magnetic stirrer to stir for 10 minutes, then conduct a hydrothermal reaction at 90°C for 8 hours, wash the reacted solid product with water and ethanol, dry it at 60°C, and put it in a tube furnace Calcined at 350°C for 4 hours and cooled to obtain a magnetic composite diatomite material.

[0073] Example 2 of the present invention obtains the scanning electron microscope picture of magnetic composite diatomite material as Figure 3-4 As shown, among them, image 3 Obtain ...

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Abstract

The invention provides a magnetic compound diatomite material and a preparation method thereof. The magnetic compound diatomite material contains active components and a carrier, wherein the active components include nano-MnO2 and Nano-Fe2O3; the carrier is diatomite; the shell size of the diatomite is 10-50 microns, and the specific surface area of the diatomite is 1m<2> / g-4m<2> / g. Compared with the prior art, the magnetic compound diatomite material provided by the invention has the advantages that the diatomite is used as the carrier so as to successfully load nanometer iron and manganese oxides in a symbiotic state, and the loading effect of the nanometer iron and manganese oxides is ideal, so that nano-particles have uniform and controllable sizes and consistent shapes based on that the structure of a product is stable; furthermore, the components of the prepared magnetic compound diatomite material generate a synergistic effect, so that the product simultaneously has relatively good electrochemical performance and water treatment performance.

Description

technical field [0001] The invention relates to the technical field of diatomite materials, in particular to a magnetic composite diatomite material and a preparation method thereof. Background technique [0002] Diatomaceous earth is a biological siliceous rock composed of the siliceous remains of diatoms and other microorganisms. Diatomite is widely used as a filter aid, functional filler, catalyst carrier, pesticide, etc. And fertilizer carrier, thermal insulation material, adsorbent and bleaching material, etc. [0003] Although the unique diatom shell structure determines that it can be widely used in many industrial fields, compared with more mature technologies abroad, domestic research is still lagging behind, and there is still a big gap. At present, the grade of diatomite products is low, and the product variety is relatively single, and there are few high value-added products represented by diatomite filter aids, especially the research on the preparation of fun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J35/10H01G11/30H01G11/46
CPCH01G11/30H01G11/46B01J23/002B01J23/8892B01J35/33B01J35/612Y02E60/13
Inventor 张育新姜德彬刘晓英袁云松何怡李凯霖
Owner CHONGQING UNIV
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