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Preparation method of potassium chloroplatinite

A technology of potassium chloroplatinite and potassium chloride is applied in chemical instruments and methods, ruthenium/rhodium/palladium/osmium/iridium/platinum compounds, inorganic chemistry, etc. Pollution and other problems, to achieve the effect of improving utilization, saving costs and reducing production costs

Active Publication Date: 2014-11-12
SHANDONG BOYUAN PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of recovering elemental platinum, a large amount of waste gas and waste water are produced, which not only causes environmental pollution, but also causes a large loss of platinum in the recovery process, resulting in higher production costs.

Method used

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  • Preparation method of potassium chloroplatinite
  • Preparation method of potassium chloroplatinite

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Weigh 20 grams of tetraaminoplatinum and platinum tetrachloride, add 600ml of concentrated hydrochloric acid, heat and reflux for 8 hours, after cooling down, filter to remove yellow insoluble matter, and collect the filtrate. Weigh 8 grams of Potassium Chloride, add purified water, stir and dissolve, then add to the above filtrate, stir and react at room temperature for 40 minutes, boil and concentrate (temperature 98-102°C) the reaction solution under ventilated conditions until dark brown solids are produced, drop After reaching room temperature, potassium chloroplatinite crystals precipitated, filtered, and dried to obtain 11.7 g of potassium chloroplatinite (platinum content 46.75%, loss on drying 0.25%), the yield was 85%, and the effective utilization rate of platinum was 42.3%.

Embodiment 2

[0020] Weigh 35 grams of tetraaminoplatinum and platinum tetrachloride, add 1000ml of concentrated hydrochloric acid, heat and reflux for 10 hours, after cooling down, filter to remove yellow insoluble matter, and collect the filtrate. Weigh 12 grams of potassium chloride, add purified water, stir and dissolve, add to the above filtrate, stir and react at room temperature for 50 minutes, boil and concentrate (temperature 98-102°C) the reaction solution under ventilated conditions until dark brown solids are produced, and cool down At room temperature, potassium chloroplatinite crystals were precipitated, filtered, and dried to obtain 20 grams of potassium chloroplatinite (platinum content 46.85%, loss on drying 0.20%), yield 83%, and effective utilization of platinum 40.9%.

Embodiment 3

[0022] Weigh 80 grams of tetraaminoplatinum and platinum tetrachloride, add 2000ml of concentrated hydrochloric acid, heat and reflux for 15 hours, after cooling down, filter to remove yellow insoluble matter, and collect the filtrate. Weigh 26 grams of potassium chloride, add purified water, stir and dissolve, add to the above filtrate, stir and react at room temperature for 40 minutes, boil and concentrate the reaction solution under ventilated conditions (temperature 98-102°C) until a dark brown solid is produced, and cool down Potassium chloroplatinite crystals precipitated at room temperature, filtered, and dried to obtain 54.3 g of potassium chloroplatinite (46.7% platinum content, 0.22% loss on drying), with a yield of 89% and an effective utilization rate of platinum of 49.1%.

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Abstract

The invention discloses a preparation method of potassium chloroplatinite. The method comprises the following steps: by adopting a waste material namely tetraammineplatinum tetrachloroplatinate always generated in a platinum complex synthesis process as a raw material, performing heating reflux reaction in concentrated hydrochloric acid, filtering to obtain filtrate, and reacting the filtrate with potassium chloride to generate potassium chloroplatinite. The method disclosed by the invention can be used for improving the utilization rate of platinum, reducing the production cost, and reducing the environmental pollution.

Description

technical field [0001] The invention relates to a preparation method of platinum compound potassium chloroplatinite, which belongs to the field of fine chemical product production. Background technique [0002] Potassium chloroplatinite, alias: Potassium tetrachloroplatinate; English name: Potassium tetrachloroplatinate (Ⅱ); CAS: 10025-99-7; Molecular weight: 415.09; Molecular formula: K 2 PtCl 4 , the structural formula: [0003] [0004] Potassium chloroplatinite is a commonly used raw material for the synthesis of divalent platinum complexes, and is widely used in the fields of automobile industry, petrochemical industry, electronics industry, and platinum antineoplastic drugs. The commonly used preparation method of potassium chloroplatinite is: adding sponge platinum into aqua regia to generate chloroplatinic acid, then reacting with potassium chloride to generate potassium chloroplatinate, and then reacting with hydrazine hydrochloride, hydrazine dihydrochloride (...

Claims

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Application Information

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IPC IPC(8): C01G55/00
Inventor 苏曼尚林峰张立波
Owner SHANDONG BOYUAN PHARM CO LTD
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