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Preparation method of In<2.24>(NCN)3 powder

A powder and solid technology, applied in the field of preparation of In2.243 powder, can solve the problems of NaCN raw material being highly toxic, time-consuming, difficult to mass-produce, etc., and achieve low product cost, simple operation steps, and short preparation period. Effect

Active Publication Date: 2019-09-03
SHAANXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method first got In 2.24 (NCN) 3 Single crystal product, but it takes a long time, it is not easy to mass produce, and the risk factor of the ampoule used is high
More importantly, InBr raw materials are difficult to obtain, while NaCN raw materials are highly toxic, and toxic and harmful gas Br will be produced during the reaction process. 2 Wait
Therefore, the process is not friendly to the environment and has no prospects for large-scale production

Method used

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  • Preparation method of In&lt;2.24&gt;(NCN)3 powder
  • Preparation method of In&lt;2.24&gt;(NCN)3 powder
  • Preparation method of In&lt;2.24&gt;(NCN)3 powder

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Effect test

Embodiment 1

[0030] According to the In:N molar ratio of 1:1, 1.5041 g (5 mmol) of hydrated indium nitrate and 0.1051 g (0.83 mmol) of melamine were weighed and dissolved in 15 mL of methanol to make them evenly mixed, and then the solvent was evaporated to dryness by rotary evaporation at 50 °C. , the obtained solid mixture was calcined at 650 °C for 3 h in an argon atmosphere, and cooled to room temperature naturally to obtain In 2.24 (NCN) 3 powder.

Embodiment 2

[0032] According to the In:N molar ratio of 1:5, 1.5041g (5mmol) of hydrated indium nitrate and 0.5255g (4.2mmol) of melamine were weighed and dissolved in 15mL of methanol to make them evenly mixed, and then the solvent was evaporated to dryness by rotary evaporation at 50°C. , the obtained solid mixture was calcined at 650 °C for 3 h in an argon atmosphere, and cooled to room temperature naturally to obtain In 2.24 (NCN) 3 powder.

Embodiment 3

[0034] According to the In:N molar ratio of 1:10, 1.5041g (5mmol) of hydrated indium nitrate and 1.0510g (8.3mmol) of melamine were weighed and dissolved in 15mL of methanol to make them evenly mixed, and then the solvent was evaporated to dryness by rotary evaporation at 50°C. , the obtained solid mixture was calcined at 650 °C for 3 h in an argon atmosphere, and cooled to room temperature naturally to obtain In 2.24 (NCN) 3 powder.

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Abstract

The invention discloses a preparation method of In<2.24>(NCN)3 powder. The preparation method comprises following steps: an indium source and a nitrogen source are fully mixed in a solvent at an In:Nmolar ratio of 1:1-1:40, solvent evaporation drying is carried out, an obtained solid mixture is subjected to sintering for 1 to 5h at 500 to 700 DEG C in a sintering atmosphere so as to obtain the high purity In<2.24>(NCN)3 powder, wherein the indium source is one randomly selected from indium oxide, indium iodide, indium nitrate, and indium chloride, the nitrogen source is urea or melamine, thesolvent is one randomly selected from deionized water, methanol, ethanol, and acetone, and the sintering atmosphere is argon gas or helium gas. The raw materials of the preparation method are widely available; the production technology is friendly to the environment; operation is convenient and safe; product purity is high; and cost is low.

Description

technical field [0001] The invention belongs to the technical field of material preparation, in particular to a kind of In 2.24 (NCN) 3 Preparation method of powder. Background technique [0002] Metal cyanamides are a class of materials with important industrial application value. Among luminescent materials, metal cyanamides have received extensive attention as crystalline materials with excellent properties. At present, there have been some literature reports on the preparation of metal cyanamides. For example: Tang et al. (A ferromagnetic carbodiimide:Cr 2 (NCN) 3 , Angewandte Chemie International Edition, 2010, 49(28):4738-4742) successfully synthesized Cr in 2010 2 (EN 2 ) 5 , and in-depth study of the application of this substance in magnetic materials. 2011 Krings et al (α-SrCN 2 :Eu 2+ -A novel efficient orange-emitting phosphor, Chemistry of Materials, 2011, 23(7):1694-1699) Preparation of α-SrCN by a high temperature solid-phase method 2 , β-SrCN 2 Mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01C3/16B82Y40/00
CPCC01C3/16B82Y40/00C01P2002/72C01P2004/64C01P2004/62
Inventor 王宽王忠宇何珍红刘昭铁王伟涛杨阳
Owner SHAANXI UNIV OF SCI & TECH
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