High uniformity capillary array gas adsorption device
A technology of capillary array and gas adsorption, which is applied to the separation of dispersed particles, chemical instruments and methods, and separation methods. The effect of low cost and avoiding pollution
Inactive Publication Date: 2019-01-11
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology
The ordinary overflow molecular beam adsorption method has problems such as difficulty in controlling the amount of adsorption, uneven adsorption, and vacuum damage at the back and bottom, and it is difficult to obtain an accurate adsorption structure.
Method used
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Embodiment Construction
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, and the mode of the present invention includes but not limited to the following embodiments.
[0022] like figure 1 and 2 As shown, a high-uniformity capillary array gas adsorption device provided by the present invention has simple structure, scientific and reasonable design, and is convenient to use. The influence can be ignored, and the adsorbate molecules can be evenly and accurately adsorbed on the surface of the solid sample with a specific number of layers (which can be less than a monomolecular layer). In addition, the present invention can accurately and automatically control the temperature during operation to avoid switching between different reaction gases cross-contamination and capillary clogging. The present invention comprises a vertical cylindrical gas chamber 7 with an open top and a sealed bottom. The bottom center of the gas chamber 7 ...
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The invention discloses a high uniformity capillary array gas adsorption device. The high uniformity capillary array gas adsorption device comprises a gas chamber, vertically distributed air intake pipelines connected to an external air passage is communicated with the bottom center of the gas chamber, the inner bottom of the gas chamber is screwed with a butterfly plug corresponding to the air intake pipe, a micron-level VCR micro hole formed by employing VCR gasket center laser punching are arranged at the air intake pipe, and a capillary array mounting groove is disposed at a top opening ofthe gas chamber, and the capillary array mounting groove is vertically installed with a capillary array sealed at a top opening of the gas chamber and capable of outwardly conveying the high uniformity large-area airflow in the gas chamber. The device can realize the high-uniformity adsorption of the reaction gas on the surface of a research object, and the influence of an adsorption process on the vacuum background is negligible. At the same time, the temperature can be accurately and automatically controlled during operation to avoid cross-contamination and capillary blockage caused by switching of different reaction gases.
Description
technical field [0001] The invention relates to the field of ultra-high vacuum air-solid interaction, in particular to a high-uniformity capillary array gas adsorption device. Background technique [0002] Surface chemistry is the study of physical and chemical phenomena that occur at solid-liquid interfaces or gas-solid surfaces. Surface chemistry is mainly to study the surface composition, surface structure, electronic structure, surface adsorption and reaction of metals and semiconductors at the atomic scale, and obtain the gas-solid / liquid-solid surface reaction mechanism. Surface chemistry can obtain surface reaction mechanism and kinetic information, and provide guidance for the construction of efficient catalysts. The vast majority of chemical reactions occur on the surface of catalysts. Therefore, surface chemistry plays a very important role in the modern chemical industry. [0003] After years of rapid development, surface analysis methods such as surface energy ...
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Login to View More IPC IPC(8): B01D53/04
CPCB01D53/0407
Inventor 毛新春王小英胡殷金伟张永彬杨喜梅
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS