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A method for preparing antimony sulfide powder by flash heat treatment

An antimony sulfide, flash technology, applied in antimony sulfide, chemical instruments and methods, inorganic chemistry and other directions, to achieve the effect of controlling production costs, low production costs, and low temperature requirements

Active Publication Date: 2021-07-30
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims at the problem of preparing antimony sulfide powder in the prior art, and provides a method for preparing antimony sulfide powder by flash heat treatment, that is, the elemental sulfur and elemental antimony are transported to the high-temperature area of ​​flash heat treatment through carrier gas for flash reaction, Realization of solid-phase elemental compound reaction

Method used

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  • A method for preparing antimony sulfide powder by flash heat treatment
  • A method for preparing antimony sulfide powder by flash heat treatment
  • A method for preparing antimony sulfide powder by flash heat treatment

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Embodiment 1

[0033] Example 1: The heating method used in this example is plasma heating, the protective gas is argon, and the carrier gas is argon

[0034] A kind of flash heat treatment to prepare antimony sulfide (Sb 2 S 3 ) powder method, the concrete steps are as follows:

[0035] (1) Put 0.5mol sulfur powder (99% in purity) and 0.2mol antimony powder (99.9% in purity) into the feeding device, turn on the argon excitation gas source, enter the vertical plasma heating reactor, and turn on the plasma Power on and start the plasma, set the plasma power to 1500W, and raise the temperature to the target temperature of 1800K. In order to ensure that the high-temperature reaction area is fully heated to the set temperature, the system is heated up slowly, and the heating time is set to 115min;

[0036] (2) The sulfur powder and antimony powder are transported to the flash heat treatment high temperature zone (1800K plasma heating zone) in the vertical plasma heating reactor through the car...

Embodiment 2

[0039] Embodiment 2: The heating method adopted in this embodiment is plasma heating, the protective gas is xenon, and the carrier gas is hydrogen;

[0040] A kind of flash heat treatment to prepare antimony sulfide (Sb 2 S 3 ) powder method, the concrete steps are as follows:

[0041](1) Put 0.45mol sulfur powder (99.99% in purity) and 0.2mol antimony powder (99% in purity) into the feeding device, turn on the xenon excitation gas source, enter the vertical plasma heating reactor, and turn on the plasma power And start the plasma, set the plasma power to 1100W, and raise the temperature to the target temperature of 1200K. In order to ensure that the high-temperature reaction area is fully heated to the set temperature, the system is heated up slowly, and the heating time is set to 125min;

[0042] (2) The sulfur powder and antimony powder are transported to the flash heat treatment high temperature zone (1200K plasma heating zone) in the vertical plasma heating reactor thro...

Embodiment 3

[0045] Embodiment 3: The heating method adopted in this embodiment is thermocouple heating, the protective gas is helium, and the carrier gas is a mixture of hydrogen sulfide and methane with a molar ratio of 1:1;

[0046] A kind of flash heat treatment to prepare antimony sulfide (Sb 2 S 3 ) powder method, the concrete steps are as follows:

[0047] (1) Put 0.4mol sulfur powder (purity: 99.9%) and 0.2mol antimony powder (purity: 99.9%) in the feeding device, open the argon excitation gas source, enter the vertical high-temperature reactor, and turn on the thermocouple power supply , raise the temperature to the target temperature of 900K, in order to ensure that the high-temperature reaction area is fully heated to the set temperature, the system is slowly heated up, and the heating time is set to 90min;

[0048] (2) The sulfur powder and antimony powder are transported to the flash heat treatment high temperature zone (900K plasma heating zone) in the vertical high tempera...

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Abstract

The invention relates to a method for preparing antimony sulfide powder by flash heat treatment, and belongs to the technical field of powder material preparation. In the present invention, the sulfur powder and the antimony powder are transported to the flash heat treatment high temperature zone in the reactor through the carrier gas for flash reaction, and the reaction product settles in the condensation zone to obtain the black gray antimony sulfide powder. The invention can realize the flash preparation of antimony sulfide, the process is short, the product powder is not easy to agglomerate, and the solid-phase simple substance reaction has low temperature requirements, has a wide temperature application range, and can well control the production cost.

Description

technical field [0001] The invention relates to a method for preparing antimony sulfide powder by flash heat treatment, and belongs to the technical field of powder material preparation. Background technique [0002] Antimony sulfide is an important raw material for industrial production, which was first used in daily life fields such as fireworks, firecrackers and matches; due to its high theoretical specific capacity and excellent cycle performance, antimony sulfide can be used as a battery for sodium-ion batteries and lithium-ion batteries. Negative electrode, used in the field of energy storage; antimony sulfide microcrystals have a low detection limit, wide linear response range and good selectivity, which can be well used in the field of sensors; antimony sulfide as a semiconductor functional material, because of its bandgap It can be close to the optimum value of photovoltaic conversion, has unique optical and optoelectronic properties, and can be used as a photocatal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G30/00
CPCC01G30/008C01P2002/82C01P2004/03
Inventor 杨佳张君刘国豪王薇杨海艳司圣和欧于学徐宝强李绍元杨斌马文会熊恒蒋文龙李一夫田阳刘大春郁青春戴永年
Owner KUNMING UNIV OF SCI & TECH
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