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Nanometer iron oxide/carbon sphere compound catalyst and preparation method and application thereof

A composite catalyst, nano iron oxide technology, applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc. and other problems, to achieve the effect of excellent catalytic effect

Active Publication Date: 2014-12-03
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, nano-iron oxide is very easy to agglomerate, thus reducing the catalytic efficiency of the catalyst

Method used

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  • Nanometer iron oxide/carbon sphere compound catalyst and preparation method and application thereof
  • Nanometer iron oxide/carbon sphere compound catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Weigh 1.6220g of ferrous sulfate into a beaker, and measure 49mL of distilled water into the beaker to make a solution.

[0017] (2) Weigh 3.5g of carbon spheres and add it to the ferrous sulfate aqueous solution prepared in step (1), sonicate for 30 minutes, and stir at 25°C for 30 minutes.

[0018] (3) Under the condition of stirring at 25°C, measure 200mL of hydrogen peroxide and add it dropwise to the mixture of carbon spheres and ferrous sulfate aqueous solution prepared in step (2), and continue to stir and react for 30 minutes after completion; then, suction filtration, The product is washed with distilled water and ethanol three times in sequence, and dried to obtain a nanometer iron oxide / carbon sphere composite catalyst. The transmission electron microscope photograph of gained nano-iron oxide / carbon sphere composite catalyst is shown in figure 1 , it can be seen from the transmission electron microscope photos that the diameter of the iron oxide nanopart...

Embodiment 2

[0020] (1) Weigh 1.6220g of ferrous sulfate into a beaker, and measure 49mL of distilled water into the beaker to make a solution.

[0021] (2) Weigh 0.5g of carbon spheres and add it to the ferrous sulfate aqueous solution prepared in step (1), ultrasonicate for 30 minutes, and stir at 25°C for 30 minutes.

[0022] (3) Under the condition of stirring at 25°C, measure 200mL of hydrogen peroxide and add it dropwise to the mixture of carbon spheres and ferrous sulfate aqueous solution prepared in step (2), and continue to stir and react for 30 minutes after completion; then, suction filtration, The product is washed with distilled water and ethanol three times in sequence, and dried to obtain a nanometer iron oxide / carbon sphere composite catalyst.

Embodiment 3

[0024] (1) Prepare 250mL reactive brilliant blue K-NR aqueous solution with a concentration of 20mg / L and place it in the photoreactor.

[0025] (2) Weigh 100 mg of the nano-iron oxide / carbon sphere composite catalyst prepared in Example 2 and add it to the methylene blue aqueous solution prepared in step (1), shake and stir overnight in a dark room.

[0026] (3) Under magnetic stirring, ultraviolet light (main wavelength is 365nm, power 300w) is used for catalytic degradation. After 60 minutes of light irradiation, the degradation rate of nano-iron oxide / carbon sphere composite catalyst on active brilliant blue K-NR is higher than that of pure iron oxide on active blue K-NR. The degradation rate of Brilliant Blue K-NR is higher than 15.8%.

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Abstract

The invention discloses a nanometer iron oxide / carbon sphere compound catalyst and a preparation method and an application thereof, which belong to the technical field of catalysts. Iron oxide nano particles are uniformly loaded on the surfaces of carbon spheres. The preparation method comprises the following steps of modifying the surfaces of the carbon spheres by performing a Fenton reaction, i.e., under the strong oxidizing property in the coexistence of hydrogen peroxide and ferrous ions; and uniformly loading iron oxide on the surfaces of the carbon spheres to obtain the nanometer iron oxide / carbon sphere compound catalyst. Due to the adoption of the method, the problems of severe aggregation and the like of a nanometer iron oxide catalyst and the like are solved, and the obtained nanometer iron oxide / carbon sphere compound catalyst is taken as an efficient combustion catalyst for solid propellants, a catalyst for photo-degradation organic matters, and a catalyst for petroleum cracking.

Description

technical field [0001] The present invention relates to a nano-iron oxide / carbon sphere composite catalyst and a preparation method thereof. The nano-iron oxide / carbon sphere composite catalyst can be used as a high-efficiency combustion catalyst for solid propellants, and can also be used as a catalyst for photocatalytic degradation of organic matter, petroleum cracking The catalyst belongs to the technical field of catalysts. technical background [0002] As a new type of carbon material, carbon spheres have special spherical structure and good surface modification, so that they have unique catalytic properties and good conditions as catalyst supports. Carbon spheres can be used not only as catalyst but also as catalyst carrier, and as functional additive. Carbon spheres and metal oxides are combined to prepare a new type of composite catalyst. Carbon spheres can play multiple roles as catalyst, carrier and functional additive. Metal oxides are a very important class of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J37/12C06D5/00A62D3/17C10G11/04A62D101/20
Inventor 刘云芳邢冠楠周浩迟伟东沈曾民
Owner BEIJING UNIV OF CHEM TECH
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