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Preparation method for NaV2O5

A raw material, sodium carbonate technology, applied in the direction of chemical instruments and methods, vanadium compounds, single crystal growth, etc., can solve the problems of long time, danger, human toxicity, etc., to shorten the sintering time, reduce the risk, and shorten the sintering time Effect

Inactive Publication Date: 2012-07-11
JILIN NORMAL UNIV
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Problems solved by technology

NaVO in raw materials 3 It is highly toxic to the human body, so the experiment process has certain risks
Moreover, the entire sintering process takes several days, which is not conducive to future industrial production

Method used

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  • Preparation method for NaV2O5
  • Preparation method for NaV2O5
  • Preparation method for NaV2O5

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Concrete preparation process steps are as follows:

[0018] Prepare NaV 2 o 5

[0019] ① Weigh the sodium carbonate (Na 2 CO 3 ) 2.12 g, vanadium trioxide (V 2 o 3 ) 1.50 g and vanadium pentoxide (V 2 o 5 ) 5.45 g (the purity of the raw material is above 99%), then mix the three raw materials, put the mixture into an agate mortar, add 10-15 ml of absolute ethanol, grind the mixture until the absolute ethanol evaporates completely, so that the mixture can be mixed uniform.

[0020] ② Put the mixture in the ceramic ark, put the ceramic ark into the quartz vessel, put the quartz vessel into the tubular resistance furnace, the quartz vessel is tubular, connect one end to the nitrogen or argon gas cylinder, and the other end to the latex tube, the latex tube comes out Put the air port into a beaker filled with a certain amount of water (for the experimental device, see figure 1 ), open the valve of the gas cylinder, pass nitrogen or argon and other chemically iner...

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Abstract

The invention relates to a preparation method for NaV2O5. According to the invention, sodium carbonate (Na2CO3), vanadium trioxide (V2O3) and vanadium pentoxide (V2O5) are used as raw materials and are mixed according to a mole ratio of 2: 1: 3, and an obtained mixture is sintered in an inert gas atmosphere like a high purity nitrogen atmosphere or an argon atmosphere at a temperature of 600 to 800 DEG C for 10 h so as to obtain NaV2O5 polycrystalline powder. According to the invention, nontoxic Na2CO3 is used to substitute a raw material with great toxicity, NaVO3, used in traditional preparation methods, which enables hazards of an experiment to be reduced and sintering time to be greatly shortened, so the method has great significance to future industrial production and incomparable advantages compared to traditional methods.

Description

technical field [0001] The present invention relates to a kind of NaV 2 o 5 method of preparation. Background technique [0002] The Peirce transition is a structural phase transition observed in many quasi-one-dimensional systems. The magneto-elastic phase transition due to spin dimerization is the spin-Pells phase transition, which is an important theoretical basis for future spintronic devices. The spin-Pells phase transition was first performed in organic TTF-CuBDT and MEM (TCNQ) 2 found in . In 1993, Hase was the first to use the inorganic material CuGeO 3 The spin-Pells phase transition was observed in the magnetic susceptibility experiments of . [0003] In 1996, Japanese scientists Isobe et al. 2 o 5 The magnetic susceptibility measurements found that at T C <T<300K temperature range, NaV 2 o 5 is an antiferromagnetic insulator; T≈T C , that is, near 34K (the highest critical temperature so far), its magnetic susceptibility decreases sharply; T<T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/00C30B29/30
Inventor 范厚刚杨景海张永军王雅新杨丽丽刘洋
Owner JILIN NORMAL UNIV
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