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
CN107543772APending Publication Date: 2018-01-05CHINA CATALYST HLDG CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA CATALYST HLDG CO LTD
Publication Date
2018-01-05

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Abstract

The invention discloses a device and method for measuring the saturation adsorption capacity of a porous material. The device comprises a gas taking room, a drying column, rotor flow meters, a soap bubble flow meter, a mixer, a thermostatic water bath, vapor saturators, an adsorption column, a vacuum pump, etc., wherein the gas taking room is connected with one end of the drying column, and the other end of the drying column is connected with the rotor flow meter V and the rotor flow meter W respectively; the rotor flow meter V is connected with the soap bubble flow meter and the vapor saturator A through a three-way valve D; the rotor flow meter W is connected with the soap bubble flow meter and the mixer through a three-way valve E; the vapor saturator A is connected with the vapor saturator B, the mixer, the adsorption column and the vacuum pump in sequence. According to the device and method disclosed by the invention, through a normal-pressure flow method, an inert gas carries adsorbate vapor to perform long-term saturation adsorption until the weight of the porous material stops increasing, and the saturation adsorption capacity of the porous material of unit mass can be obtained by weighing. The method has the advantages of easiness in operation, small equipment investment, short average period of analysis and high test accuracy.
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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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