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Method for detecting content of high-purity rhodium compound solution

A rhodium compound and detection method technology, applied in the field of precious metal detection, can solve the problems of increasing detection complexity and cost, increasing detection complexity, and cumbersome self-made process, etc., and achieve high accuracy of detection results, easy purchase, and low detection cost Effect

Active Publication Date: 2021-06-22
广东金正龙科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the incomplete precipitation of hexaamminecobalt nitrate on rhodium, the detection results need to be assisted by an inductively coupled plasma emission spectrometer, which increases the complexity and cost of detection. Self-made is required, and the self-made process is also cumbersome, which further increases the cumbersomeness of the detection

Method used

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  • Method for detecting content of high-purity rhodium compound solution
  • Method for detecting content of high-purity rhodium compound solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of detection method of high-purity rhodium compound solution content, comprises the following steps:

[0038] S1: Weigh 1g of rhodium sulfate solution with an electronic scale, and record the mass as M 1 After adding 8mL of water and 10mL of saturated sodium hydroxide solution to the rhodium sulfate solution, add dropwise an appropriate amount of hydrazine hydrate with a mass concentration of 40%, stop the dropwise addition when bubbles are no longer generated, and then heat the solution to boiling with an electric furnace. Complete response;

[0039]S2: Filter the rhodium sulfate solution after the reaction in step S1 with a No. 4 sand core crucible with constant weight, and wash it with hot water for 3 times, then put the sand core crucible into an oven at 100°C for drying under reduced pressure 60min; then take 60% of the total amount of dried powder and put it into the quartz boat of the hydrogen furnace, first pass in 1.5L / min hydrogen for 10min, empty the ...

Embodiment 2

[0042] A kind of detection method of high-purity rhodium compound solution content, comprises the following steps:

[0043] S1: Weigh 1g of rhodium sulfate solution with an electronic scale, and record the mass as M 1 After adding 10mL of water and 5mL of saturated sodium hydroxide solution to the rhodium sulfate solution, add dropwise an appropriate amount of hydrazine hydrate with a mass concentration of 50%, stop the dropwise addition when bubbles are no longer generated, and then heat the solution to boiling with an electric furnace to make Complete response;

[0044] S2: Filter the rhodium sulfate solution after the reaction in step S1 with a No. 4 sand core crucible with constant weight, and wash it with hot water for 4 times, and then put the sand core crucible into an oven with a temperature of 105°C and dry it under reduced pressure 65min; then take 70% of the total amount of dried powder and put it into the quartz boat of the hydrogen furnace, first pass 2.0L / min hy...

Embodiment 3

[0047] A kind of detection method of high-purity rhodium compound solution content, comprises the following steps:

[0048] S1: Weigh 1g of rhodium sulfate solution with an electronic scale, and record the mass as M 1 After adding 12mL of water and 15mL of saturated sodium hydroxide solution to the rhodium sulfate solution, add dropwise an appropriate amount of hydrazine hydrate with a mass concentration of 60%, stop the dropwise addition when bubbles are no longer generated, and then heat the solution to boiling with an electric furnace to make Complete response;

[0049] S2: Filter the rhodium sulfate solution after the reaction in step S1 with a No. 4 sand core crucible with constant weight, and wash it with hot water for 3 times, then put the sand core crucible into an oven with a temperature of 110°C and dry it under reduced pressure 70min; Then take 80% of the total amount of dried powder and put it into the quartz boat of the hydrogen furnace, first pass 2.5L / min hydro...

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Abstract

The invention relates to the field of precious metal detection, and particularly discloses a method for detecting the content of a high-purity rhodium compound solution. The detection method comprises the following steps: S1, weighing a rhodium compound solution with the mass of M1, adding water and a sodium hydroxide solution into the rhodium compound solution, dropwise adding hydrazine hydrate until no bubbles are generated, and then heating until boiling; S2, filtering, washing and drying the rhodium compound solution after the reaction in the step S1, introducing hydrogen for reduction, drying to obtain powder, and recording the mass of the powder as M2; and S3, calculating the rhodium content according to the M1 and M2 recorded in the step S1 and the step S2. According to the detection method, the hydrazine hydrate which is easy to purchase is directly adopted for reducing the rhodium element in the high-purity rhodium compound solution, the reduction reaction is thorough, the accuracy of the detection result is relatively high, the detection complexity degree is relatively low, and the cost is relatively low.

Description

technical field [0001] The application relates to the field of precious metal detection, more specifically, it relates to a method for detecting the content of a high-purity rhodium compound solution. Background technique [0002] Rhodium is a silvery-white, hard metal, belonging to the platinum group elements, with outer and subouter orbitals, which can gradually lose electrons and form a unique electronic structure with multiple low-valent oxidation states. Due to their excellent catalytic properties, platinum group metals are widely used in the fields of environmental protection materials, petrochemicals, fine chemicals, and biopharmaceuticals. Among them, rhodium compounds and their complexes are widely used in the preparation of hydrogenation catalysts, automobile exhaust purification catalysts, fuel cell electrodes, thermocouples and the like. In rhodium catalysis, the rhodium content in the rhodium compound has a high impact on the catalytic efficiency, so it is nece...

Claims

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Application Information

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IPC IPC(8): G01N5/04
CPCG01N5/04Y02P10/20
Inventor 江雄强许灿荣
Owner 广东金正龙科技有限公司