A gas detection device and method
A gas detection and detection device technology, which is applied in measurement devices, instruments, scientific instruments, etc., can solve problems such as inability to meet tracking detection, and achieve the effect of qualitative and quantitative analysis of reactions, improvement of accurate description, and improvement of research level.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0048] Embodiment 1: Realize the routine detection function of mass spectrometer
[0049] The mass spectrometer is used for the analysis of the tail gas composition of chemical adsorption instruments, catalyst activity evaluation devices, thermogravimetric analyzers and other instruments: the gas to be detected enters from the capillary tube sampling system 10 through the D port of the six-way vacuum chamber, and enters through the F port of the six-way vacuum chamber. According to the requirements of the quadrupole 12 on the experimental vacuum degree, after the precursor pump 4 and the molecular pump 3 are evacuated, the gas to be detected enters from the capillary tube sampling system 10 through the D port of the six-way vacuum chamber, and the intake valve 11 is closed. At the same time, the in-situ reaction cell valve 9 is opened to realize vacuum sampling, and the gas composition is detected by the quadrupole 12. The outlets A and B of the six-way vacuum chamber are respe...
Embodiment 2
[0050] Example 2: In-situ reaction cell combined with mass spectrometer to achieve high vacuum quantitative analysis of gas products
[0051] First, after the precursor pump 4 and the molecular pump 3 are evacuated, keep the high vacuum degree at 10 -7 bar, close the valve 5 of the molecular pump, the six-way vacuum chamber maintains a high vacuum state, and the C port of the six-way vacuum chamber is always sealed with a blind plate;
[0052] 1) Blank experiment (background pressure calibration)
[0053] Select a quartz glass disc with a certain shape, size and volume, and place it in the in-situ reaction cell 6. After a certain amount of standard detection gas enters from the capillary tube sampling system 10 through the D port of the six-way vacuum chamber, it is stored in the gas chamber 1 for a certain amount. gas under pressure, the volume is V 1 , the volume of gas in the six-way vacuum chamber V 2 , in-situ reaction cell 6 gas volume V 3 , the pressure is P 0 . A...
Embodiment 3
[0056] Example 3: In-situ reaction cell combined with mass spectrometer for high vacuum and high temperature online surface reaction
[0057] On the basis of the application of Example 2, the catalyst or solid fuel tablet sample is placed in the in-situ reaction cell 6, and after the precursor pump 4 and the molecular pump 3 are evacuated, the high vacuum degree is kept at 10 -7 Above bar, close the valve 5 to maintain a high vacuum state. The reaction gas enters from the capillary tube sampling system 10 through the port D of the six-way vacuum chamber, and then the six-way vacuum chambers A, C, and E are closed, and the reaction gas reacts on the in-situ reaction pool 6 under high vacuum and on-line surface at variable temperature. The in-situ reaction cell 6 detects the adsorbed product or intermediate product on the surface of the catalyst through infrared during the fuel temperature-programmed reaction process, and the mass spectrometer detects the gas phase product or in...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More