Method for synthesizing tetrammineplatinum sulfate (II)

A technology of tetraammine platinum sulfate and tetraammine platinum dichloride, applied in chemical instruments and methods, ruthenium/rhodium/palladium/osmium/iridium/platinum compounds, inorganic chemistry, etc. Eliminate the problems of large loss of ammonium and precious metals, etc., and achieve the effect of high yield and simple operation

Inactive Publication Date: 2016-06-29
TITAN ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Some documents such as U.S. Patent [US6346222B], Chinese Patent (201210315379.6), Chinese Patent (201210099564.6) and Chinese Patent (201310312422.8) have reported methods for tetraammineplatinum sulfate (II) of similar structure, but are used in the synthesis of sulfuric acid by these methods In the case of tetraammi...

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  • Method for synthesizing tetrammineplatinum sulfate (II)

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Embodiment 1

[0018] see figure 1 , in the embodiment of the present invention, weigh 500g of potassium chloroplatinite and 200g of ammonium acetate respectively, dissolve them in water and mix them, add water to 30L, adjust the pH value to 5 with acetic acid, cool after reflux for 4h, and filter the precipitated solid. Washed three times with water, washed three times with ethanol and dried to obtain 343 g of cis-dichlorodiammine platinum (II), with a yield of 95%.

[0019] Take by weighing 340g cis-dichlorodiammine platinum (II), stir it into a suspension with water, dissolve it with an appropriate amount of ammonia water until clarification, concentrate the solution under reduced pressure to nearly dryness, filter the obtained solid, and obtain 367g dichlorotetrachloride Ammine platinum (II) solid, yield 97%.

[0020] Weigh 334g of dichlorotetraammine platinum (II) solid, dissolve it in water, add 105mL of 10mol / L sulfuric acid solution, add purified water to 1.8L, and then reflux for 5...

Embodiment 2

[0022] see figure 1 , in the embodiment of the present invention, weigh 750g of potassium chloroplatinite and 375g of ammonium acetate respectively, dissolve them in water and mix them, add water to 38L, adjust the pH value to 5 with acetic acid, cool after reflux for 5h, and filter the precipitated solid. Washed with water for 3 times, washed with ethanol for 3 times, and dried to obtain 520 g of cis-dichlorodiammine platinum (II), with a yield of 96%.

[0023] Weigh 520g of cis-dichlorodiammine platinum (II), stir it into a suspension with water, dissolve it with an appropriate amount of ammonia water until clarification, concentrate the solution to near dryness under reduced pressure, and filter the obtained solid to obtain 567g of dichlorotetrachloride Ammine platinum (II) solid, yield 98%.

[0024] Weigh 501g of dichlorotetraammine platinum (II) solid, dissolve it in water, add 165mL of 10mol / L sulfuric acid solution, add purified water to 3L and then reflux for 5h, and ...

Embodiment 3

[0026] see figure 1 , in the embodiment of the present invention, weigh 1000g of potassium chloroplatinite and 450g of ammonium acetate respectively, dissolve them in water and mix them, add water to 50L, adjust the pH value to 5 with acetic acid, cool after reflux for 5h, and filter the precipitated solid. Washed with water for 3 times, washed with ethanol for 3 times, and then dried to obtain 694 g of cis-dichlorodiammine platinum (II), with a yield of 96%.

[0027] Weigh 690g of cis-dichlorodiammine platinum (II), stir it into a suspension with water, dissolve it with an appropriate amount of ammonia water until clarification, concentrate the solution to near dryness under reduced pressure, and filter the obtained solid to obtain 753g of dichlorotetrachloride Ammine platinum (II) solid, yield 98%.

[0028] Weigh 668g of dichlorotetraammine platinum (II) solid, dissolve it in water, add 220mL of 10mol / L sulfuric acid solution, add purified water to 3.5L, and then reflux for...

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Abstract

The invention discloses a method for synthesizing tetraammine platinum (II) sulfate, which consists of the following steps: after dissolving potassium chloroplatinite and ammonium acetate in water, cis-dichlorodiamine platinum (II) is produced through reflux reaction ); cis-dichlorodiammine platinum (II) reacts with ammonia water to generate dichlorotetraammine platinum (II); after dichlorotetraammine platinum (II) is dissolved in sulfuric acid water, HCl is obtained after reflux reaction to remove HCl Platinum(II) Tetraammine Sulfate. The invention has simple operation, can effectively remove chloride ions, and the yield is greater than 90%.

Description

technical field [0001] The invention relates to the field of chemistry and chemical engineering, in particular to a method for synthesizing tetraammine platinum (II) sulfate. Background technique [0002] In order to manufacture parts with high stability and high wear resistance, it is usually necessary to deposit a layer of precious metal on the coating. Due to the continuous increase in product requirements, the requirements for residual halogen elements are getting lower and lower, and the amount of halogen-free electroplating solutions is increasing. [0003] Tetraammine platinum (II) compounds are an important class of platinum compounds, widely used in chemical catalysis and electroplating industries. Among them, tetraammine platinum(II) sulfate ([Pt(NH 3 ) 4 ](SO 4 )) is a new type of electroplating main salt, which has been widely used in platinum plating in the electronics industry due to its high electroplating efficiency, cleanliness and environmental protectio...

Claims

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Application Information

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IPC IPC(8): C01G55/00
CPCC01G55/002
Inventor 王庆琨王安之
Owner TITAN ADVANCED MATERIALS CO LTD
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