Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation for metal sulfide

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

Inactive Publication Date: 2006-06-21
WUHAN UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation for metal sulfide
  • Preparation for metal sulfide

Examples

Experimental program
Comparison scheme
Effect test

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 220°C for 3 days at about 300 atmospheres. After natural cooling, the product powder was filtered out, washed with carbon disulfide, and dried to obtain 12.2 grams of SnS. X-ray analysis 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 .

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
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing metal sulfides. Elemental sulfur and metal or metal low sulfides are placed in an organic solvent and reacted for 6-120 hours at 100-500°C and 20-800 atmospheres to obtain metal sulfides. things. The method of the present invention has the following advantages: compared with the direct high-temperature synthesis method of metal and sulfur, the risk of the implementation process is significantly reduced; it does not involve the use or generation of toxic gases in large quantities; the cost of raw materials is low and easy to obtain; the production process is simple and the reaction conditions are easy to control ; Conducive to the mass production of metal sulfide materials and other obvious advantages. The invention can be used to prepare metal sulfides containing only a single metal element or composite metal sulfides composed of multiple metal elements. The prepared sulfide products are usually ultrafine powders with a basic particle size of less than 5 microns, which can be directly used as catalysts 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

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(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