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A method for continuous electrochemical dissolution of ruthenium powder

An electrochemical and ruthenium powder technology is applied in the field of continuous electrochemical dissolution of ruthenium powder, which can solve the problems of difficulty in continuous electrolysis and high-efficiency production.

Active Publication Date: 2020-10-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of dissolving ruthenium powder by electrolysis is difficult to achieve continuous electrolysis of ruthenium powder, obtaining a predetermined concentration of ruthenium solution and efficient output of ruthenium solution

Method used

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  • A method for continuous electrochemical dissolution of ruthenium powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Set the electrolytic cell

[0041] according to figure 1 The structure shown sets up the electrolytic cell. The electrolytic cell is made of quartz glass, and the first separator 8 is used to separate the electrolytic cell into five tanks ( figure 1 Only three tanks are shown in the figure, those skilled in the art can understand that according to figure 1 Five tanks are set in the manner shown). The electrode chamber of each cell is 65mm long, 45mm wide and 300mm high. The first partition 8 and the second partition 9 are arranged in parallel, the second partition 9 has a gap of 20 mm from the top, and the bottom has a communication channel 3 with a semicircular cross section. Each cell body is divided into an A electrode chamber and a B electrode chamber by the second separator 9 . The overflow holes 4 (a, b) are opened on the top of the first partition 8 at a distance of 50 mm from the top, and the hole diameter is 10 mm. A hydrochloric acid solution inlet 1...

Embodiment 2

[0046] (1) The arrangement of the electrolytic cell is the same as in Example 1, the difference is that the electrode chamber of each tank body is 65mm long, wide 45mm, and high 320mm; The distance is 70mm.

[0047] (2) The continuous electrolysis of ruthenium powder is the same as embodiment 1, and the difference is that, during the electrolysis reaction, a civilian alternating current of 40 volts is applied at both ends of the A and B electrodes; when the ruthenium content in hydrochloric acid is 31g / L, continue Add hydrochloric acid, control the addition rate of hydrochloric acid to be 15mL / min, this moment be dissolved with the ruthenium-containing hydrochloric acid solution of 31g / L concentration ruthenium to discharge from outlet 2.

Embodiment 3

[0049] (1) The arrangement of the electrolytic cell is the same as in Example 1, the difference is that the electrode chamber of each tank body is 70mm long, wide 40mm, and high 320mm; The distance is 70mm.

[0050] (2) The continuous electrolysis of ruthenium powder is the same as embodiment 1, and the difference is that, during the electrolytic reaction, a civilian alternating current of 60 volts is applied at both ends of the A and B electrodes; when the ruthenium content in hydrochloric acid is 32g / L, continue Add hydrochloric acid, control the addition speed of hydrochloric acid to be 15mL / min, this moment be dissolved with the ruthenium-containing hydrochloric acid solution of 32g / L concentration ruthenium to discharge from outlet 2.

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Abstract

The invention discloses a continuous electrochemical dissolving method for ruthenium powder. The continuous electrochemical dissolving method comprises: 1, arranging an electrolytic cell, wherein theelectrolytic cell is divided into at least two tank bodies by a first separation plate arranged in the electrolytic cell, the first separation plate is provided with an overflow hole, the tank body isdivided into two electrode chambers provided with electrodes by a second separation plate arranged in the tank body, and the bottom portions of the two electrode chambers are communicated; 2, addingruthenium powder to each tank body, making a hydrochloric acid solution introduced from a hydrochloric acid solution inlet sequentially flow through and fill all the tank bodies, simultaneously applying voltage between the two electrodes of each tank body, and carrying out a continuous electrolysis reaction on the ruthenium powder in the hydrochloric acid solution; and 3, when the ruthenium in thehydrochloric acid solution in the electrolytic cell achieves a predetermined concentration, continuously supplementing a hydrochloric acid solution into the electrolytic cell to form a continuous product stream having the stable ruthenium concentration and containing ruthenium. According to the present invention, the method has characteristics of simple operation and no by-product generation.

Description

technical field [0001] The invention belongs to the technical field of dissolving ruthenium powder, in particular to a method for continuously electrochemically dissolving ruthenium powder. Background technique [0002] Ruthenium is a hard and brittle light gray polyvalent rare metal element, and it is a member of the platinum group metals. The content in the earth's crust is only one part per billion, making it one of the rarest metals. Ruthenium is the cheapest of the platinum group metals, although other metals such as platinum and palladium are more abundant than ruthenium. The nature of ruthenium is very stable, and its corrosion resistance is very strong. It can withstand the corrosion of hydrochloric acid, sulfuric acid, nitric acid and aqua regia at room temperature. [0003] Metal ruthenium is the initial raw material for synthesizing other ruthenium-containing compounds and preparing ruthenium-containing catalysts. [0004] The wide application of ruthenium and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/26
CPCC25B1/26
Inventor 王世亮吕顺丰张明森李彤秦燕璜
Owner CHINA PETROLEUM & CHEM CORP