Preparation method of nanoscale hercynite

A kind of iron-aluminum spinel and nano-scale technology, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of high thermal conductivity of iron-aluminum spinel, uneven particle size, and high energy consumption of electric melting method problem, achieve the effect of reducing the synthesis temperature and operation difficulty, reducing the calcination temperature and simplifying the synthesis process
CN104803422AActive Publication Date: 2015-07-29TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TONGJI UNIV
Publication Date
2015-07-29

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Abstract

The invention relates to a preparation method of nanoscale hercynite. The method comprises steps as follows: (1) a mixed solution of N,N-dimethyl formamide and water is prepared, wherein the volume fraction of the N,N-dimethyl formamide ranges from 65% to 85%; (2) an aluminum-containing compound, terephthalic acid and ferric acetylacetonate with the molar ratio being 15:10:3 are added to the solution prepared in Step (1) and evenly stirred, and a reactant solution is prepared; (3) the reactant solution prepared in Step (2) is aged in an airtight manner, then cooled to the room temperature and subjected to solid-liquid separation, and a hercynite precursor product is obtained; (4) the hercynite precursor product is placed in a high-temperature furnace for calcination and then cooled to the room temperature, and the nanoscale hercynite is obtained. Compared with the prior art, the preparation method has the advantages that the synthesis process is simple, the method is convenient to operate, the cost is low, the energy consumption is low and the like.
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Description

technical field

[0001] The invention relates to a preparation method of nanometer materials, in particular to a preparation method of nanoscale iron-aluminum spinel. Background technique

[0002] There are many kinds of spinel-type composite oxides and they are widely used. Different cations entering the spinel structure can have many different charge combinations. The distribution of cations in the spinel structure is not only related to the chemical composition, but also related to the charge of the constituent cations, crystal chemistry and the physicochemical environment during formation. Spinel composite oxides can be used as pigments, catalytic materials, magnetic materials and other applications. With the continuous deepening of people's understanding and research, its application range in practice is also becoming more and more extensive. Recent studies have shown that oxygen-deficient spinel ferrite has a good prospect in the control of air pollution, which can b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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