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YS/T 1161.3-2016 English PDF

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YS/T 1161.3-2016: Chemical analysis methods of pseudoboehmite—Part 3: Determination of pore volume and specific surface area—Bynitrogen adsorption
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YS/T 1161.3-2016English149 Add to Cart 3 days [Need to translate] Chemical analysis methods of pseudoboehmite—Part 3: Determination of pore volume and specific surface area—Bynitrogen adsorption Valid YS/T 1161.3-2016

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Basic data

Standard ID YS/T 1161.3-2016 (YS/T1161.3-2016)
Description (Translated English) Chemical analysis methods of pseudoboehmite��Part 3: Determination of pore volume and specific surface area��Bynitrogen adsorption
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H21
Classification of International Standard 77.120.10
Word Count Estimation 4,414
Date of Issue 2016-07-11
Date of Implementation 2017-01-01
Regulation (derived from) Notice of the Ministry of Industry and Information Technology (2016 No. 37)
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This standard specifies the method for determining the pore volume and specific surface area of ??pseudoboehmite.

YS/T 1161.3-2016: Chemical analysis methods of pseudoboehmite—Part 3: Determination of pore volume and specific surface area—Bynitrogen adsorption


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Chemical analysis methods of pseudoboehmite-Part 3. Determination of pore volume and specific surface area-Bynitrogen adsorption ICS 77.120.10 H21 People's Republic of China non-ferrous metal industry standards Pseudoboehmite analysis method Part 3. Determination of pore volume and specific surface area Nitrogen adsorption method Part 3.Determinationofporevolumeandspecificsurfacearea 2016-07-11 released 2017-01-01 implementation Ministry of Industry and Information Technology of the People's Republic of China

Foreword

YS/T 1161 "pseudo-boehmite analysis method" is divided into the following three sections. --- Part 1. Determination of peptization index EDTA volume method; --- Part 2. Determination of loss on ignition weight method; --- Part 3. Determination of pore volume and specific surface area of nitrogen adsorption method. This part of YS/T 1161 Part 3. This section drafted in accordance with GB/T 1.1-2009 given rules. This part of the National Non-ferrous Metals Standardization Technical Committee (SAC/TC243) and focal point. This part of the drafting unit. Aluminum Shandong Co., Ltd., Henan Branch of Aluminum Corporation of China, Shandong Zibo Sen Chi Fine Chemical Limited. The main drafters of this section. Han Gang, Shao Jing, Xu Hao Wen, Wang Xinliang, Ai Yi, Hu Jin E. Pseudoboehmite analysis method Part 3. Determination of pore volume and specific surface area Nitrogen adsorption method

1 Scope

This section YS/T 1161 specifies the determination of the pore volume and specific surface area of boehmite. This section is suitable for the determination of the pore volume and specific surface area of the boehmite, pore volume determination range 0.10mL/g ~ 1.20mL/g, ratio Area measurement range of.200.0m2/g ~ 400.0m2/g.

2 method summary

Samples in a gas system will undergo physical adsorption at the material surface (the surface area of the outer and inner vias of the particles) at low temperatures. When the adsorption reaches equilibrium, the equilibrium adsorption pressure and the amount of adsorbed gas are measured, and the BET surface area is calculated using the BET parameter equation. In relative When the pressure p/p0 = 0.98, the pore volume of the sample is calculated from the volume of nitrogen adsorbed.

3 instruments and equipment

3.1 gas adsorption instrument. 3.2 high temperature furnace. 3.3 high purity nitrogen purity of not less than 99.99%. 3.4 High purity helium purity of not less than 99.99%.

4 sample

The sample was pre-burned at 550 ℃ ± 10 ℃ in a high-temperature furnace (3.2) for 2h, then placed in a desiccator and allowed to cool to room temperature.

5 analysis steps

5.1 The dry and clean empty sample tube into the gas adsorber (3.1) degassing station interface, the vacuum and the system vacuum reaches 1.3Pa Backfill Helium to atmospheric pressure. Remove the sample tube from the degassing station and immediately close the stopper (accurate to 0.0001g). Record the mass For m1. 5.2 take the appropriate amount of sample added to the sample tube, the estimated total sample surface area of 10m2 ~ 50m2 is appropriate. 5.3 Then the sample tube and degasser port connection, set the heating package, set the heating temperature is 300 ℃, began to sample heating vacuum. When added When the hot temperature reaches 300 ° C and the system vacuum reaches 1.3Pa, the heating bag is removed, and the sample tube is naturally cooled to room temperature, and the helium is backfilled To atmospheric pressure. 5.4 Remove the sample tube from the degassing station and immediately close it with a stopper (accurate to 0.0001g). Make sure the mass is m2. The difference between m2 and m1 Get the sample net weight. 5.5 The degassed pre-processed sample tube is promptly transferred to the gas adsorption (3.1) analysis station. Enter the analysis parameters (analysis of pressure points selected

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