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Preparation method of potassium chloropalladate

A technology of potassium chloropalladate and palladium chloride, applied in chemical instruments and methods, ruthenium/rhodium/palladium/osmium/iridium/platinum compounds, inorganic chemistry, etc. Complicated operations, etc.

Inactive Publication Date: 2020-02-25
SHENYANG RES INST OF NONFERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the synthesis efficiency of potassium chloropalladate is low, the reaction needs recrystallization, and the operation is complicated
[0003] At the same time, there are relatively few basic researches on the preparation of potassium chloropalladate, and the synthesis efficiency of potassium chloropalladate is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take 100mL PdCl 2 Put the solution in a beaker, add 50mL HClO after heating up to 60°C 4 , stirred for 45min. The temperature of the Pd-containing solution was raised to 100°C, and 300 mL of saturated KCl solution was added to the system, and stirred for 60 min. The resulting solution was cooled in ice water and dried in a vacuum oven at 50°C. Testing, storage.

[0037] result:

[0038] Potassium chloropalladate synthesis rate: 95%;

[0039] Potassium chloropalladate purity: 99.5%;

Embodiment 2

[0041] Take 100mL PdCl 2 Put the solution in a beaker, add 60mL HClO after heating up to 80°C 4 , stirred for 60min. The temperature of the Pd-containing solution was raised to 140°C, and 500 mL of saturated KCl solution was added to the system, and stirred for 60 min. The resulting solution was cooled in ice water and dried in a vacuum oven at 50°C. Testing, storage.

[0042] result:

[0043] Potassium chloropalladate synthesis rate: 95.2%;

[0044] Potassium chloropalladate purity: 99.6%;

Embodiment 3

[0046] Take 100mL PdCl 2 Place the solution in a beaker, add 30mL HClO after heating up to 70°C 4 , stirred for 50min. The temperature of the Pd-containing solution was raised to 120°C, and 400 mL of saturated KCl solution was added to the system, and stirred for 50 min. The resulting solution was cooled in ice water and dried in a vacuum oven at 50°C. Testing, storage.

[0047] result:

[0048] Potassium chloropalladate synthesis rate: 95.4%;

[0049] Potassium chloropalladate purity: 99.6%;

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PUM

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Abstract

The invention provides a preparation method of potassium chloropalladate. The preparation method comprises the following steps: acidifying a palladium chloride solution, adding a KCl saturated solution, and performing stirring; and cooling the obtained solution until crystals are separated out, and carrying out vacuum drying to obtain the potassium chloropalladate. The acidified PdCl2 solution canincrease the synthesis efficiency of the potassium chloropalladate; HClO4 is accurately added in proportion, so that the activity of a PdCl2 solution system is effectively improved, and the synthesisrate of potassium chloropalladate is more than or equal to 95%; and the synthesis rate of the potassium chloropalladate greater in the method than or equal to 95%, and is far higher than the synthesis rate of 90% in the prior art, the purity of the potassium chloropalladate in the method is greater than or equal to 99.5%, and is higher than the purity of 99% in the prior art, the palladium content of the potassium chloropalladate obtained in the invention is 32.7%, and is higher than the palladium content of 32.64% in the prior art.

Description

technical field [0001] The invention relates to a preparation method of potassium chloropalladate, which belongs to the field of precious metal metallurgy. Background technique [0002] Potassium chloropalladate is used in reagent synthesis and catalytic reactions. The method for preparing potassium chloropalladate in the prior art is a direct synthesis method of adding potassium chloride after dissolving palladium powder in aqua regia to catch nitrate. The disadvantage of this method is that the synthesis efficiency of potassium chloropalladate is low, the reaction needs recrystallization, and the operation is complicated. [0003] At the same time, there are relatively few basic researches on the preparation of potassium chloropalladate, and the synthesis efficiency of potassium chloropalladate is low. Contents of the invention [0004] In order to solve the problems existing in the prior art, after repeated studies and a large number of tests, the present invention pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G55/00
CPCC01G55/002C01P2006/80
Inventor 王大维李岩松徐飞飞王萍王蓓
Owner SHENYANG RES INST OF NONFERROUS METALS