Device and method for measuring saturation adsorption capacity of porous material

A technology of porous materials and measuring devices, which is applied in the direction of material absorption and weighing, can solve the problems of cumbersome operation and inaccurate test results, and achieve the effects of simple operation, avoiding contact between samples and air, and improving test accuracy

Pending Publication Date: 2018-01-05
CHINA CATALYST HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a device and method for measuring the saturated adsorption capacity of porous materials by the normal-pressure organic vapor flow method, which solves the problems of cumbersome operation and inaccurate test results in the prior art

Method used

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  • Device and method for measuring saturation adsorption capacity of porous material
  • Device and method for measuring saturation adsorption capacity of porous material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Utilize the measuring device I measurement analysis process of above-mentioned porous material saturated adsorption capacity as follows:

[0037] Open the valve of the gas extraction chamber 1, reduce the pressure of the precision decompression gauge 2 to below 0.5MPa, dry the gas through the drying column 3, open the first control valve 4, connect the three-way valve D9 to the soap bubble flow meter 11, and adjust the flow rate Open the valve V5 and calibrate the rotameter V7 through the soap bubble flowmeter 11. After the calibration is completed, close the flow regulating valve V5, connect the three-way valve E10 to the soap bubble flowmeter 11, open the flow regulating valve W6, and pass through the soap bubble flowmeter 11 to calibrate the rotameter W8, and close the flow regulating valve W6 after the calibration is completed.

[0038] Take three weighing bottles, weigh them with caps and empty weights M0, record them, then quickly transfer sample 1 into the weighi...

Embodiment 2

[0041] The operation steps are the same as in Example 1, except that the porous material is replaced with Sample 2, and the results are shown in Table 1.

Embodiment 3

[0043] The operation steps are the same as in Example 1, except that the porous material is replaced with Sample 3, and the results are shown in Table 1.

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Abstract

The invention discloses a device and method for measuring the saturated adsorption capacity of porous materials, including a gas-taking chamber, a drying column, a rotor flowmeter, a soap bubble flowmeter, a mixer, a constant temperature water bath, a steam saturator, an adsorption column, a vacuum pump, etc. . The gas extraction chamber is connected to one end of the drying column, and the other end of the drying column is respectively connected to the rotameter V and the rotameter W, and the rotameter V is connected to the soap bubble flowmeter and the steam saturator A through a three-way valve D. The rotameter W is connected to the soap bubble flowmeter and the mixer through a three-way valve E, and the steam saturator A is connected to the steam saturator B, the mixer, the adsorption column, and the vacuum pump in sequence. The present invention adopts the normal pressure flow method, uses the inert gas to carry the adsorbate vapor to saturate and adsorb for a long time until the weight of the porous material no longer increases, and weighs to obtain the saturated adsorption capacity of the porous material per unit mass. The method has the advantages of simple operation, small equipment investment, short analysis average period and high test accuracy.

Description

technical field [0001] The invention belongs to the field of measuring saturated adsorption capacity, in particular to a device and method for measuring the saturated adsorption capacity of porous material organic vapor. Background technique [0002] Porous materials such as molecular sieves have good selective adsorption capacity. In the 19th century, people discovered that molecular sieves have reversible absorption-dehydration properties. As a good adsorption separation agent, molecular sieve materials are widely used in chemical industry, medicine, environmental protection, energy, etc. kind of industry. [0003] The adsorption equilibrium relationship determines the direction and limit of the adsorption process, and is the basic basis of the adsorption process. The adsorption equilibrium equation cannot be derived from theory at present, and it completely depends on the adsorption equilibrium data obtained by experiments, and its empirical expression is obtained by fit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/02
Inventor 王涛王志光李小龙李进
Owner CHINA CATALYST HLDG CO LTD
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