Method determining impurity content in stannic oxide electrode material

A technology of impurity content and electrode material, which is applied in material excitation analysis, preparation of test samples, thermal excitation analysis, etc. Small error, high success rate of sample preparation and simple processing

Inactive Publication Date: 2016-06-01
TUNGHSU TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high density and corrosion resistance of tin oxide electrode materials, it is difficult to dissolve. The traditional method of dissolving tin oxide is to add strong acid or alkali, but a large number of experimental evidence shows that the traditional acid-dissolving or alkali-dissolving methods cannot Fully dissolve the highly dense tin oxide electrode, and the operation steps are cumbersome and inefficient
In addition, the detection method for impurity elements in tin oxide electrodes cannot be compatible with various impurity elements at the same time, the analysis speed is slow, the detection accuracy is low, and it is difficult to meet the needs of modernization

Method used

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  • Method determining impurity content in stannic oxide electrode material

Examples

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Comparison scheme
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Embodiment 1

[0032] (1) Grind a tin oxide electrode sample with known impurity content until it has no graininess, put it in a weighing bottle, dry it in an oven at 110°C for 2 hours, take it out and cool it to room temperature in a desiccator. After adding 1g of lithium tetraborate and 2g of lithium metaborate into the platinum crucible, accurately weigh 0.1000g (accurate to 0.0001g) of the tin oxide electrode sample in it, and then add 1g of sodium hydroxide solid to cover it; place the platinum crucible Heat at 1000°C for 10 minutes in a high-frequency melting furnace; take out the platinum crucible, take out the melt piece after cooling, put it in a beaker and add 200g of pure water, then pipette 15g of high-grade pure concentrated hydrochloric acid with a concentration of 36.5%, and place Heat and dissolve on an electric furnace to obtain a clear and transparent solution, and transfer it to a 250mL volumetric flask;

[0033] (2) Prepare the standard solution of standard addition sampl...

Embodiment 2

[0036](1) Grind a tin oxide electrode sample with known impurity content until it has no graininess, put it in a weighing bottle, dry it in an oven at 110°C for 2 hours, take it out and cool it to room temperature in a desiccator. After adding 0.4g lithium tetraborate and 2g lithium metaborate into the platinum crucible, accurately weigh 0.1000g (accurate to 0.0001g) tin oxide electrode sample in it, then add 0.5g sodium hydroxide solid to cover it, and make samples at the same time Blank test; place the platinum crucible in a high-frequency melting furnace and heat it at 1000°C for 15 minutes; take out the platinum crucible, take out the melting piece after cooling, put it in a beaker, add 230g of pure water, and pipette 8g with a concentration of 65% The superior grade pure concentrated nitric acid is placed on an electric furnace for heating and dissolving to obtain a clear and transparent solution, which is transferred to a 250mL volumetric flask; step (2), step (3) are con...

Embodiment 3

[0038] (1) Grind a tin oxide electrode sample with known impurity content until it has no graininess, put it in a weighing bottle, dry it in an oven at 110°C for 2 hours, take it out and cool it to room temperature in a desiccator. After adding 0.1g lithium tetraborate and 0.8g lithium metaborate into the platinum crucible, accurately weigh 0.1000g (accurate to 0.0001g) tin oxide electrode sample in it, then add 0.2g sodium hydroxide solid to cover it, and do Sample blank test; place the platinum crucible in a high-frequency melting furnace and heat it at 1000°C for 20 minutes; take out the platinum crucible, take out the melting piece after cooling, put it in a beaker, add 230g of pure water, and pipette 5g with a concentration of 72 The superior grade pure perchloric acid of % is placed on electric furnace heating and dissolving to obtain clear and transparent solution, is transferred in the 250mL volumetric flask; Step (2), step (3) are consistent with embodiment 1, and test...

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Abstract

The invention discloses a method determining impurity content in a stannic oxide electrode material. The method comprises: adding the stannic oxide electrode into lithium tetraborate and lithium metaborate serving as a flux and mixed proportionally for melting, taking a fuse piece after cooling, adding water and inorganic strong acid to dissolve to obtain a solution to be determined, and then determining the solution to be determined by adopting an inductive coupling plasma emission spectrometer. By adopting the method disclosed by the invention, the high compactness stannic oxide electrode material can be fully dissolved, sampling is simple, various impurity elements in the stannic oxide electrode can be determined, a determined result is accurate and an analysis error is small.

Description

technical field [0001] The invention relates to a testing method for inorganic materials, in particular to a method for measuring the content of impurities in tin oxide electrode materials. Background technique [0002] Tin oxide electrode is one of the four major electrodes used in glass electromelting. It is widely used as an electric boosting material in TFT glass furnaces to electrically heat molten glass. The commonly seen doping forms are, Sb 2 o 3 -CuO-ZnO, Sb 2 o 3 -CuO, Sb 2 o 3 -V 2 o 3 , Sb 2 o 3 -CuO-MnO 2 , ZnO-Nb 2 o 3 Wait. Different doping forms will directly affect the compactness, resistance characteristics and corrosion resistance of tin oxide electrodes. For this reason, it is necessary to analyze and measure the doping components of the tin oxide electrode in order to obtain a tin oxide electrode with excellent performance and monitor its quality. necessary. [0003] At present, there are different detection methods for the content of imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/71G01N1/28
CPCG01N21/71G01N1/28
Inventor 韩文梅
Owner TUNGHSU TECH GRP CO LTD
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