Carbon dioxide adsorption isotherm precision testing method

A technology of adsorption isotherm and test method, applied in the direction of analyzing materials, instruments, etc., can solve the problems of low reliability and large result error, and achieve the effect of high reliability

Inactive Publication Date: 2013-08-07
YANGZHOU UNIV
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Problems solved by technology

[0004] Technical problem: In order to overcome the shortcomings of large error and low reliability of the carbon dioxide adsorption curve of the material based on the volumetric method in the past, the purpose of the present invention is to provide a CO2 with a wide application range and high efficiency. 2 Precise Test Method for Adsorption Curve

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  • Carbon dioxide adsorption isotherm precision testing method
  • Carbon dioxide adsorption isotherm precision testing method

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Embodiment Construction

[0029] The method of the present invention uses a device such as figure 1 As shown, the device includes a temperature sensor 1, a pressure sensor 2, a gas storage chamber 3, a valve 4, a connecting pipe 5, a sample chamber 6, CO 2 Adsorption material 7, temperature sensor 8. The gas storage chamber 3 is equipped with a temperature sensor 1 and a pressure sensor 2; the sample chamber 6 is equipped with a temperature sensor 8, which contains CO 2 The adsorption material 7 ; the gas storage chamber 3 and the sample chamber 6 are connected through a connecting pipe 5 , and a valve 4 is arranged on the connecting pipe 5 .

[0030] The invention provides a method for accurately measuring CO2 adsorption isotherms, comprising the following steps:

[0031] 1. Weigh a material with a certain mass m and put it into the sample chamber;

[0032] 2. The temperature sensor 1 measures the temperature of the gas storage chamber and the temperature of the sample chamber, the pressure sensor ...

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Abstract

The invention relates to a testing method of material performance and particularly relates to a carbon dioxide adsorption isotherm precision testing method for materials. The method disclosed by the invention is based on a capacity method, a CO2 adsorption isotherm is obtained by continuously recording gas pressure and temperature of each of all parts of the material during an adsorption or release process and calculating the adsorption amount of the material corresponding to different CO2 gas pressures according to a Helmholtz equation, and the whole calculation and drawing process of CO2 real density is realized by programming through a computer. According to the method disclosed by the invention, as the influence of temperature fluctuation in a gas storage chamber on experimental results is considered during the procedure, even the part of the gas storage chamber of equipment can not realize constant temperature, the CO2 adsorption isotherm obtained by testing is still real and reliable. The method disclosed by the invention has a great practical value, the equipment becomes simple and easy to operate, and the credibility is simultaneously higher when the high-pressure CO2 adsorption isotherm of the material is tested.

Description

technical field [0001] The invention relates to a testing method for material properties, in particular to an accurate testing method for the carbon dioxide adsorption isotherm of the material. Background technique [0002] The increase of greenhouse gases caused by human activities is the main cause of climate warming, so "reducing emissions, that is, reducing greenhouse gas emissions" is of great significance. Carbon dioxide is a major greenhouse gas, and fossil fuel combustion produces and emits large amounts of CO 2 Gas is the main cause of global warming, and its contribution to global climate change has exceeded 60%. At the same time CO 2 It is also a potential carbon resource. At present, the resources on the earth are becoming increasingly tense, and many countries are committed to CO 2 Research on capture and storage and utilization. For this reason many are used to adsorb CO 2 The material is developed, but whether it is application or research, to find out t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/04
Inventor 程宏辉
Owner YANGZHOU UNIV
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