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Tetrammine palladium sulphate synthesis method

A technology of tetraammine palladium sulfate and tetraammine palladium dichloride is applied in chemical instruments and methods, ruthenium/rhodium/palladium/osmium/iridium/platinum compounds, inorganic chemistry, etc. Low yield and other problems, to achieve the effect of high product purity, high reaction yield, simple operation

Inactive Publication Date: 2012-08-01
KUNMING INST OF PRECIOUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because tetraammine palladium sulfate and ammonium sulfate have very good water solubility, it is difficult to avoid completely separating them in this conventional synthesis method, so the product purity is not high and the yield is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1 Measure 50 ml of concentrated ammonia water, add 10.00 grams (56.4 mmol) of palladium chloride solid in batches under stirring, after the addition is complete, stir and react at 50°C for 1 hour, the palladium chloride is dissolved to obtain a light yellow solution, filter, Remove a small amount of insoluble matter, concentrate the filtrate to dryness under reduced pressure, add 50ml of water and stir to obtain a light yellow dichlorotetraamminepalladium(II) solution; add 17.58 grams (56.4mmol) of silver sulfate and add 20ml of water, and stir to form a suspension solution, slowly added to the above dichlorotetraammine palladium (II) solution in batches, stirred and reacted at room temperature for 2 hours and then filtered, the filter cake was washed 3 times with 30ml of water, and the filtrate and washings were combined and then concentrated under reduced pressure to nearly dryness to obtain The white crystals were washed with 2 ml of ice water and then vacuum-...

Embodiment 2

[0012] Example 2 Measure 500 ml of concentrated ammonia water, add 150.00 g (845.9 mmol) of palladium chloride solid in batches under stirring, after the addition is complete, stir and react at 70 ° C for 0.5 hour, the palladium chloride is dissolved to obtain a light yellow solution, filter, Remove a small amount of insoluble matter, concentrate the filtrate to dryness under reduced pressure, add 800ml of water and stir to obtain a pale yellow dichlorotetraamminepalladium(II) solution; add 263.74 grams (845.9mmol) of silver sulfate and add 300ml of water, and stir to form a suspension solution, slowly added in batches to the above dichlorotetraamminepalladium(II) solution, stirred and reacted at 50°C for 1 hour, then filtered, the filter cake was washed 3 times with 100ml water, and the filtrate and washing liquid were combined and concentrated to near dryness under reduced pressure White crystals were obtained, which were washed with 20 ml of ice water and then vacuum-dried a...

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PUM

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Abstract

The invention discloses a novel tetrammine palladium sulphate (II) synthesis method, comprising the following steps that: palladium chloride (PdCl2) reacts with ammonia water to generate tetraammine dichloropalladium (II); and tetraammine dichloropalladium (II) reacts with silver sulfate to generate a compound of tetrammine palladium sulphate (II). The reaction operation is simple, the reaction yield is high and more than 90%, and the purity of products is high and more than 99.0%.

Description

technical field [0001] The invention relates to a synthesis method of a palladium complex, i.e. tetraammine palladium (II) sulfate, belonging to the field of chemistry and chemical engineering. Background technique [0002] Tetraammine palladium (II) compounds ([Pd(NH 3 ) 4 ]X 2 ) is an important class of palladium compounds, widely used in chemical catalysis and electroplating industries. Among them, tetraammine palladium (II) sulfate ([Pd(NH 3 ) 4 ](SO 4 )) is a new type of electroplating main salt, which has been widely used in palladium plating in the electronics industry due to its high electroplating efficiency, cleanness and environmental protection. In addition, tetraammine palladium (II) sulfate can also be used as a precursor compound of supported palladium catalyst due to its good water solubility and relatively stable chemical properties of the solution. [0003] The conventional synthesis method of tetraammine palladium (II) sulfate is to prepare tetraamm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G55/00
Inventor 叶青松刘伟平陈家林谌喜珠常桥稳姜婧
Owner KUNMING INST OF PRECIOUS METALS
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