Preparation for metal sulfide

A metal sulfide, sulfide technology, applied in the preparation of sulfide/polysulfide, alkali metal sulfide/polysulfide, magnesium/calcium/strontium/barium sulfide/polysulfide, etc. Obtain high-purity products, and it is unlikely to prepare metal sulfides in large quantities, so as to achieve the effects of easy control of reaction conditions, reduced risk, and favorable mass production.

Inactive Publication Date: 2005-05-11
WUHAN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

Obviously, dissolving in an organic solvent can improve the reactivity of S, but on the one hand, at normal temperature and pressure, this solid-liquid phase reaction is difficult to complete, and it is difficult to obtain high-purity products; on the other hand, many pyrite-type sulfides (FeS 2 、CoS 2 、NiS 2 etc.) cannot be generated by this method at normal temperature and pressure, therefore, it is impossible to use this method to prepare a large amount of metal sulfides under conventional conditions

Method used

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  • Preparation for metal sulfide
  • Preparation for metal sulfide

Examples

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example 1

[0030] Example 1: Place 16 grams of elemental copper powder and elemental sulfur in an atomic ratio of 2:1 in a 30ml autoclave, add acetone to 90% of the reactor, and keep the reactor at 110°C for 3 days at 20 atmospheres. After natural cooling, the product powder was taken out by filtration, washed with carbon disulfide, and dried to obtain Cu 2 S 15.3 g, X-ray analysis showed that the product was Cu 2 S.

example 2

[0031] Example 2: Put 12.8 grams of elemental Sn powder and elemental sulfur in an atomic ratio of 1:1.03 in a 30ml autoclave, and add toluene to 90% of the reactor. The reaction kettle was kept at a constant temperature of 220°C for 3 days under about 300 atmospheric pressure. After natural cooling, the product powder was filtered out, washed with carbon disulfide, and dried to obtain 12.2 grams of SnS. The X-ray analysis results showed that the product was SnS.

example 3

[0032] Example 3: 10 grams of metal nickel powder and 11.3 grams of elemental sulfur were placed in a 50 ml autoclave, and toluene was added to reach 90% of the reactor. The reaction kettle was kept at about 300 atmospheres at 220°C for 5 days, and after natural cooling, the product powder was filtered out, washed with carbon disulfide, and dried to obtain NiS 2 20.2 grams, X-ray and EDX analysis showed that the product was NiS 2 .

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Abstract

A production for metal sulfide is carried by: 1) mixing elemental sulfur with metal or low metal sulfide in organic solvent and reacting at 100-500deg.C and 1-800Pa for 6-120 hrs. Its advantages include high safety, no pollution and low cost for catalyst and battery materials.

Description

technical field [0001] The invention relates to a method for preparing metal sulfides. Background technique [0002] Many metal sulfides exhibit excellent photoelectric, thermoelectric, electromagnetic and semiconducting physical properties, and have a wide range of uses in physical electrical and magnetic devices. Similarly, many metal sulfides (such as sulfides of Mo, W, etc.) have excellent catalytic properties in chemistry; in addition, some sulfides (such as sulfides of Fe, Co, Ni) can also be used as positive catalysts for medium and low temperature batteries. Negative material. However, due to the limitations of the synthesis method, sulfide materials are difficult to mass-produce. [0003] Generally speaking, metal sulfides can be prepared by mixing and reacting elemental metal and sulfur together. In many cases, the preparation of sulfides (such as many transition metal sulfides) is generally carried out at higher temperatures because solidification reactions are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/20C01B17/22C01B17/42
Inventor 金先波程士敏陈政胡晓宏汪的华
Owner WUHAN UNIV
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