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Carbon coated Fe3O4 composite material and preparation method thereof

A composite material, fe3o4 technology, applied in the field of carbon-coated Fe3O4 composite material and its preparation, can solve the problems of discontinuous preparation, time-consuming, complicated production process of composite material, etc., achieve continuous preparation, convenient and simple adjustment of preparation conditions, low cost effect

Active Publication Date: 2015-07-08
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the current carbon package Fe 3 o 4 Composite material production process is cumbersome and time-consuming, non-continuous preparation and other problems, the present invention provides a continuous preparation of carbon-coated Fe by using a microreactor coupled spray pyrolysis reactor 3 o 4 Composite method, Fe 3 o 4 Evenly dispersed and coated in carbon materials

Method used

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  • Carbon coated Fe3O4 composite material and preparation method thereof
  • Carbon coated Fe3O4 composite material and preparation method thereof
  • Carbon coated Fe3O4 composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] (1) FeCl 3 ·6H 2 O, FeSO 4 ·7H 2 O was dissolved in deionized water to obtain solution 1, in which FeCl 3 and FeSO 4 The concentrations of NaOH and starch were 0.15mol / L and 0.075mol / L, respectively; NaOH and starch were dissolved in the same volume of deionized water to obtain solution 2, in which the concentrations of NaOH and starch were 0.6mol / L and 3.6mol / L, respectively. The concentration ratio of the amount of substance of each substance is Fe 3+ :Fe 2+ :OH - :starch=0.25:0.125:1:6.

[0022](2) Solution 1 and solution 2 obtained in step 1 are continuously input into the microreactor with the same flow rate 20ml / min through two different inlets of the microreactor respectively by a material pump, and react therein to generate Fe 3 o 4 At the same time, the reaction mixture is continuously exported from the outlet of the microreactor, and enters the spray pyrolysis reactor through the connecting pipeline, and is continuously fed with the inert carrier gas ...

Embodiment 2

[0026] (1) FeCl 3 ·6H 2 O, FeSO 4 ·7H 2 O was dissolved in deionized water to obtain solution 1, in which FeCl 3 and FeSO 4 The concentrations of NaOH and glucose were 0.15mol / L and 0.075mol / L, respectively; NaOH and glucose were dissolved in the same volume of deionized water to obtain solution 2, in which the concentrations of NaOH and glucose were 0.6mol / L and 3.6mol / L, respectively. The concentration ratio of the amount of substance of each substance is Fe 3+ :Fe 2+ :OH - :glucose=0.25:0.125:1:6.

[0027] (2) Solution 1 and solution 2 obtained in step 1 are continuously input into the microreactor with the same flow rate 20ml / min through two different inlets of the microreactor respectively by a material pump, and react therein to generate Fe 3 o 4 At the same time, the reaction mixture is continuously exported from the outlet of the microreactor, and enters the spray pyrolysis reactor through the connecting pipeline, and is continuously fed with the inert carrier...

Embodiment 3

[0030] (1) FeCl 3 ·6H 2 O, FeSO 4 ·7H 2 O was dissolved in deionized water to obtain solution 1, in which FeCl 3 and FeSO 4 The concentrations of NaOH and sucrose were 0.15mol / L and 0.075mol / L, respectively; NaOH and sucrose were dissolved in the same volume of deionized water to obtain solution 2, in which the concentrations of NaOH and sucrose were 0.6mol / L and 3.6mol / L, respectively. The concentration ratio of the amount of substance of each substance is Fe 3+ :Fe 2+ :OH - : sucrose=0.25:0.125:1:6.

[0031] (2) Solution 1 and solution 2 obtained in step 1 are continuously input into the microreactor with the same flow rate 20ml / min through two different inlets of the microreactor respectively by a material pump, and react therein to generate Fe 3 o 4 At the same time, the reaction mixture is continuously exported from the outlet of the microreactor, and enters the spray pyrolysis reactor through the connecting pipeline, and is continuously fed with the inert carrie...

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Abstract

A method for continuously preparing the carbon coated Fe3O4 composite material by using a micro-reactor coupled spray pyrolysis reactor, Fe3O4 powders are dispersed and coated evenly in the carbon material. Compared with the prior art, the method has the advantages of short reaction time, low cost, high controllable degree of reaction process, simple and convenient to adjust preparation condition, continuous preparation, small particle size of Fe3O4, narrow distribution, and good particle dispersibility.

Description

technical field [0001] The invention relates to a carbon wrapped Fe 3 o 4 A composite material and a preparation method thereof belong to the technical field of carbon and metal oxide composite materials. Background technique [0002] carbon coated Fe 3 o 4 Composite material is a new type of functional composite material, its special structure can make carbon and Fe 3 o 4 The advantages can be brought into full play, and their shortcomings can be overcome. The carbon material in the outer layer can prevent the coated Fe 3 o 4 Oxidation or reaction with chemical reagents, and can overcome Fe 3 o 4 Particles are easy to agglomerate and difficult to surface modification. Fe 3 o 4 The particles in turn enable the composite material to have magnetic properties, thereby broadening the application fields of carbon materials and further improving their availability. Therefore, the carbon-encapsulated Fe 3 o 4 Composite materials have extremely important application v...

Claims

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Application Information

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IPC IPC(8): C01B31/02C01G49/08B82Y30/00
Inventor 刘云芳李阳阳喻长远迟伟东顾德周秦子健
Owner BEIJING UNIV OF CHEM TECH
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