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A kind of preparation method of high-purity platinum

A high-purity, chloroplatinic acid technology, applied in the field of inorganic compound preparation, can solve the problems of low platinum content and high impurity content, and achieve the effect of simple preparation method, low impurity content and advanced technology

Inactive Publication Date: 2011-12-28
TIANJIN CHEM REAGENT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] High-purity platinum is widely used in national defense, military industry, satellite, electronic industry, etc. At present, the production method of platinum is to dissolve platinum with aqua regia to generate chloroplatinic acid, and then react with ammonium chloride to generate ammonium chloroplatinate, chloroplatinic acid Sponge platinum is obtained after burning ammonium. The content of platinum obtained by this method is low and the content of impurities is high, which cannot meet the needs of modern scientific development.

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method of high-purity platinum, the steps of which are:

[0020] (1) Dissolve 100 grams of metal platinum in aqua regia, add saturated ammonium chloride after dissolving, generate ammonium chloroplatinate precipitation, and drain to obtain ammonium chloroplatinate A for subsequent use;

[0021] (2) Purification of ammonium chloroplatinate by ion exchange

[0022] The resin, water, and the ammonium chloroplatinate precipitation obtained in step (1) are placed in a quartz container, and under the stirring of 120r / min, after 10min, the ammonium chloroplatinate is converted into chloroplatinic acid and enters the solution, and the solution is obtained by Brookfield. Filter through the funnel, separate the resin from the chloroplatinic acid solution, wash the resin with 500 ml of distilled water until the lotion is colorless, pour the filtrate into a quartz container, heat at 50°C, and slowly add saturated ammonium chloride solution to generate chloroplatinic a...

Embodiment 2

[0026] A preparation method of high-purity platinum, the steps of which are:

[0027] (1) Dissolve 120 grams of metal platinum in aqua regia, add saturated ammonium chloride after dissolving, generate ammonium chloroplatinate precipitation, and drain to obtain ammonium chloroplatinate A for subsequent use;

[0028] (2) Purification of ammonium chloroplatinate by ion exchange

[0029] The resin, water, and the ammonium chloroplatinate precipitation obtained in step (1) are placed in a quartz container, and under stirring at 130r / min, after 20min, the ammonium chloroplatinate is converted into chloroplatinic acid and enters the solution. Filter through the funnel, separate the resin from the chloroplatinic acid solution, wash the resin with 600 ml of distilled water until the lotion is colorless, pour the filtrate into a quartz container, heat at 60°C, and slowly add saturated ammonium chloride solution to generate chloroplatinic acid ammonium acid precipitation, the precipitat...

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Abstract

The invention relates to a method for preparing high-purity platinum. The steps are as follows: (1) dissolving 100 grams of metallic platinum in aqua regia, and reacting with ammonium chloride to form ammonium chloroplatinate precipitation, and then draining to obtain platinum chloride (2) ion-exchange purification of ammonium chloroplatinate, (3) preparation of high-purity platinum, the ammonium chloroplatinate obtained in step (2) is packed into a quartz boat, put into a muffle furnace and calcined to obtain high-purity platinum pure platinum. In the present invention, metallic platinum and aqua regia are dissolved to generate ammonium chloroplatinate, and then the ammonium chloroplatinate is removed by ion exchange resin to generate chloroplatinic acid, and ammonium chloride is added to generate ammonium chloroplatinate, which is obtained by burning after drying. High purity platinum.

Description

Technical field: [0001] The invention relates to the field of preparation methods of inorganic compounds, in particular to a preparation method of high-purity platinum. Background technique: [0002] High-purity platinum is widely used in national defense, military industry, satellite, electronic industry, etc. At present, the production method of platinum is to dissolve platinum with aqua regia to generate chloroplatinic acid, and then react with ammonium chloride to generate ammonium chloroplatinate, chloroplatinic acid Sponge platinum is obtained after burning ammonium. The content of platinum obtained by this method is low and the content of impurities is high, which cannot meet the needs of modern scientific development. Invention content: [0003] The purpose of the invention is to overcome the shortcomings of the prior art and provide a method for preparing high-purity platinum with high purity and low impurity content. [0004] The technical scheme that the presen...

Claims

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Application Information

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IPC IPC(8): C22B9/00C22B11/00
Inventor 胡建华
Owner TIANJIN CHEM REAGENT RES INST
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