Palladium powder production method without palladium mirror

A production method and technology for palladium powder are applied in the field of palladium powder production for removing palladium mirrors, and can solve the problems of difficulty in cleaning and the reduction of production efficiency by palladium sheets, and achieve the effects of improving production efficiency and reducing production loss.

Active Publication Date: 2019-12-06
英特派铂业股份有限公司
View PDF11 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the palladium raw materials are transformed from palladium powder. However, palladium mirror phenomenon often exists in the production process of palladium powder, and as the production process proceeds, the palladium mir

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1

[0024] (1) Palladium complex solution configuration: Weigh 1kg of dichlorodiamine palladium in a 5L beaker, add 1L of deionized water, and then place it on a heating platform to heat to 40°C and stir evenly to obtain a solution to be reduced.

[0025] (2) Salt addition: 200 g of sodium chloride is added to the solution to be reduced obtained in step (1) above, and the reaction slurry is stirred uniformly.

[0026] (3) Adding reducing agent: Weigh 500 g of sodium citrate, slowly add the solution obtained in step (2) while stirring, and add for a total of about 1 hour. Then continue to stir until the color of the solution becomes colorless.

[0027] (4) Suction filtration and drying: the reaction solution obtained in step (3) is suction filtered to obtain the primary palladium powder; washed with ultrapure water for 5 times; the palladium powder obtained by the suction filtration and washing is dried in an oven at the drying temperature The temperature is 100℃, so as...

Example Embodiment

[0028] Example 2

[0029] (1) Palladium complex solution configuration: weigh 10kg of dichlorodiamine palladium in a 50L reactor, add 30L of deionized water, and then heat the solution to 90°C and stir evenly to obtain the solution to be reduced.

[0030] (2) Salt addition: 1.5 kg of ammonium chloride is added to the solution to be reduced obtained in step (1) above, and the reaction slurry is stirred uniformly.

[0031] (3) Adding reducing agent: Weigh 6 kg of sodium citrate borohydride, slowly add the solution obtained in step (2) while stirring, and add for a total of about 5 hours. Then continue to stir until the color of the solution becomes colorless.

[0032] (4) Suction filtration and drying: the reaction solution obtained in step (3) is suction filtered to obtain the primary palladium powder; washed with ultrapure water for 5 times; the palladium powder obtained by the suction filtration and washing is dried in an oven at the drying temperature The temperature is 70℃, so as ...

Example Embodiment

[0033] Example 3

[0034] (1) Palladium complex solution configuration: Weigh 5 kg of dichlorotetraamine palladium in a 50L reactor, add 20L of deionized water, and then heat the solution to 60°C and stir evenly to obtain a solution to be reduced.

[0035] (2) Salt addition: 1 kg of ammonium chloride is added to the solution to be reduced obtained in step (1) above, and the reaction slurry is stirred uniformly.

[0036] (3) Addition of reducing agent: Weigh 1 kg of hydrazine hydrate, slowly add the solution obtained in step (2) while stirring, and add for a total of about 3 hours. Then continue to stir until the color of the solution becomes colorless.

[0037] (4) Suction filtration and drying: the reaction solution obtained in step (3) is suction filtered to obtain the primary palladium powder; washed with ultrapure water for 5 times; the palladium powder obtained by the suction filtration and washing is dried in an oven at the drying temperature The temperature is 150℃, so as to p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Bulk densityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a palladium powder production method without a palladium mirror. The palladium powder production method includes the following steps that (1) a palladium complex is added intodeionized water for heating, even mixing is conducted, and to-be-reduced liquid is obtained; (2) salt is added into the to-be-reduced liquid obtained in the step (1), and even stirring is conducted; (3) a reducing agent is added into a solution obtained in the step (2), and stirring is conducted till the color of the solution becomes colorless; and (4) reaction liquid obtained in the step (3) is subjected to suction filtration to obtain an initial palladium powder product, drying is conducted after washing with ultrapure water is conducted, and a palladium powder product is obtained. The palladium powder production method has the advantages: the salt is introduced into the to-be-reduced liquid, on the one hand, the salt can achieve the effect of dull polish with a reaction vessel, and theproduced palladium mirror is quickly stripped; on the other hand, the salt can achieve a stabilizing effect on a reduction system, and a palladium mirror phenomenon is weakened. According to the palladium powder production method, the palladium mirror phenomenon in the palladium powder production process is removed, the palladium powder production efficiency is greatly improved, the product pass rate is greatly increased, and meanwhile, the production loss in the palladium powder production process is also reduced.

Description

technical field [0001] The application relates to the technical field of metal materials, in particular to a palladium powder production method for removing palladium mirrors. Background technique [0002] Due to their excellent physical and chemical properties, platinum group metals have become indispensable and precious materials for the development of science and technology. Because of their high price, they are generally used in key core parts and are known as "industrial vitamins". [0003] As one of the important precious metals, palladium has irreplaceable physical and chemical properties, such as ultra-high electrical conductivity, strong hydrogen absorption and excellent catalytic performance, so it is widely used in various industrial fields. At present, most of the palladium raw materials are transformed from palladium powder. However, palladium mirror phenomenon often exists in the production process of palladium powder, and as the production process proceeds, th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B22F9/24
CPCB22F9/24Y02P10/20
Inventor 王来兵秦喜超熊雅玲金英杰刘虎
Owner 英特派铂业股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap