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Method for determining and analyzing Si content in carbon material

A carbon material, determination and analysis technology, applied in the measurement of color/spectral properties, etc., can solve the problems of complex operation of gravimetric method, unfavorable rapid analysis, unfavorable popularization and application, etc., and achieves wide application range, short color development time, and easy operation. Effect

Inactive Publication Date: 2012-07-11
SNTO TECH GRP
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Problems solved by technology

Among them, the gravimetric method is complex and time-consuming, which is not conducive to rapid analysis; the ICP method requires very expensive instruments, which is not conducive to popularization and application; the visible spectrophotometric method is used to determine the Si content in carbon materials with high accuracy and easy operation, which meets the needs of the industry

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  • Method for determining and analyzing Si content in carbon material
  • Method for determining and analyzing Si content in carbon material
  • Method for determining and analyzing Si content in carbon material

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Embodiment Construction

[0023] The specific embodiment of the present invention will be described in detail below in combination with specific experimental data.

[0024] Instruments and equipment that the present invention needs to use: disc mill, high temperature furnace, balance (0.1mg), porcelain boat, platinum crucible (with cover, 30ml), spectrophotometer, measuring cylinder.

[0025] Configuration of main reagents and samples:

[0026] 1. Anhydrous sodium carbonate.

[0027] 2. Boric acid.

[0028] 3. Hydrochloric acid, 3mol / L.

[0029] 4. Ammonium molybdate solution, 10%.

[0030] 5. Sulfuric acid solution, 1+1.

[0031] 6. Ascorbic acid, 2%.

[0032] 7. Preparation of sample A: a. Take the measured carbon material sample in a disc grinding bowl and grind it into powder; b. Accurately weigh 2.0000g (m) of the air-dried ground sample and put it in a porcelain boat , pave it flat; c. Put the porcelain boat on the porcelain boat frame, put the frame on the furnace mouth of the high-tempera...

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Abstract

The invention provides a method for determining and analyzing Si content in a carbon material. The method is characterized by comprising the following steps of: with anhydrous sodium carbonate or / and boric acid as a solvent, melting the ash obtained by firing the carbon material; leaching out a test solution by use of a diluted hydrochloric acid solution; adjusting the PH value of the test solution, and then adding ammonium molybdate so that the silicon forms silicon-molybdenum heteropoly acid; reducing the silicon-molybdenum heteropoly acid into silicon-molybdenum blue by a reducing agent in a high-acidity sulfuric acid medium; and analyzing and determining the Si content by a colorimetric method. The method for determining and analyzing Si content in a carbon material, provided by the invention, is simple to operate and has high accuracy.

Description

1. Technical field [0001] The invention relates to a method for measuring and analyzing Si content in carbon materials, in particular to a method for measuring Si content in carbon materials by using a spectrophotometric method. 2. Background technology [0002] At present, the methods for determining the Si content in carbon materials mainly include gravimetric method, visible spectrophotometry and ICP method. Among them, the gravimetric method is complex and time-consuming, which is not conducive to rapid analysis; the ICP method requires very expensive instruments, which is not conducive to popularization and application; the determination of Si content in carbon materials by visible spectrophotometry is highly accurate and easy to operate, which meets the needs of the industry. 3. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for measuring and analyzing Si content in carbon materials with simple op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
Inventor 吴玉华金汉卿
Owner SNTO TECH GRP
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