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Mesoporous nanometer FeCoOx complex preparation method

A composite and nanotechnology, applied in the direction of nanotechnology, cobalt compound, nanotechnology, etc., can solve the problems of high cost, easy grain growth, unfriendly environment, etc., to reduce complexity and cost, and avoid nano agglomeration , the effect of good technical effect

Inactive Publication Date: 2016-03-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the problems existing in the prior art that the cost is high, the environment is not friendly, the obtained material has a low specific surface area when no surfactant exists, the crystal grains are easy to grow, and the complex is easy to phase separate. A new preparation of mesoporous nano-FeCoO x complex method

Method used

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  • Mesoporous nanometer FeCoOx complex preparation method
  • Mesoporous nanometer FeCoOx complex preparation method
  • Mesoporous nanometer FeCoOx complex preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Mesoporous Nano FeCoO x Preparation of complexes. First, 10 grams of iron isopropoxide, 20 grams of cobalt isopropoxide and 200 grams of polyethylene glycol (10000 molecular weight) are dispersed in 500 grams of heptane organic solvent to obtain a mixed solution. At 100 ° C, water vapor is mixed with The liquid phase is in contact, so that the iron isopropoxide and cobalt isopropoxide in the mixed liquid are hydrolyzed in the polymer network at the same time to obtain nano-FeCoO x / polyethylene glycol polymer complex precursor. After drying in air, the precursor was calcined at 600°C for 6 hours to obtain FeCoO with a particle size of 5 nm and a mesopore distribution of 5 nm. x Complex.

Embodiment 2

[0022] Mesoporous Nano FeCoO x Preparation of complexes. First, iron isopropoxide, cobalt isopropoxide and polyethylene glycol (10000 molecular weight) are dispersed in heptane to obtain a mixed solution. The molar ratio of Fe:Co in the mixed solution is 1:1; the total molar amount of iron and cobalt in the mixed solution The molar ratio of number to polymer is 1:1. The ratio of the total moles of iron and cobalt to the organic solvent is 1:10. At 100°C, water vapor is brought into contact with the mixed liquid, so that the iron isopropoxide and cobalt isopropoxide in the mixed liquid are simultaneously hydrolyzed in the polymer network to obtain nano-FeCoO x / polyethylene glycol polymer complex precursor. After drying in air, the precursor was calcined at 600°C for 6 hours to obtain FeCoO with a particle size of 5 nm and a mesopore distribution of 5 nm. x Complex. Mesoporous Nano FeCoO x The energy spectrum of the complex shows that the products co-exist FeO x with CoO...

Embodiment 3-7

[0024] According to the method of Example 2, the type of polymer added is fixed, the amount of polymer added and the reaction conditions are changed, and the nano-FeCoO x The particle size and mesoporous distribution of the compound are adjusted to obtain mesoporous nano-FeCoO with different particle sizes and different mesoporous distributions. x . The specific results are shown in Table 1.

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Abstract

The present invention relates to a mesoporous nanometer FeCoOx complex preparation method. A purpose of the present invention is to mainly solve the problems of complex technology, easy phase separation of the complex, and the like of the mesoporous nanometer FeCoOx complex preparation technology in the prior art. According to the present invention, the technical scheme that the organic polymer solution of organic iron and organic cobalt is subjected to hydrolysis at a certain temperature by using water vapor is used so as to well solve the problems in the production, and the method can be used for the mass production of the FeCoOx complex preparation.

Description

technical field [0001] The invention relates to a mesoporous nano FeCoO x Method for the preparation of the complex. Background technique [0002] Nanomaterials have surface effect, small size effect, quantum size effect and macroscopic quantum tunneling effect, and produce singular mechanical, electrical, magnetic, optical, thermal and chemical properties [Q.S.Wu, etal.Theworldofchemistry, 1999,5,233]. FeCo, NiCo, FeNi and other bimetallic nanomaterials with special magnetic properties have been successively prepared [T.M.Whitnet, et al, Science, 1993, 261, 1316]. Its nanostructure combines the characteristics of nanomaterials and metal materials, showing excellent performance far higher than that of macroscopic bulk materials. Mesoporous nanomaterials assembled with nanoparticles and mesoporous solids have been an attractive frontier field in nanomaterials science since the 1990s, and a new research boom has emerged in recent years. Mesoporous nanomaterials not only hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/00B82Y30/00
Inventor 袁晓红许中强唐康健
Owner CHINA PETROLEUM & CHEM CORP
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