Simulation and experimental study on adsorption of SF6 decomposition components and optical gas cell materials
Source abstract
Abstract
Fourier transform infrared spectroscopy (FTIR) is widely used in gas detection of SF6 decomposition components. A gas cell is an important element in the detection system, which can directly affect the accuracy and sensitivity of detection. During the long-term use of the gas cell, SF6 decomposition components may be adsorbed on the inner wall of the gas cell, which affects the detection results and the life of the gas cell. Therefore, the study on the adsorption between the gas cell material and the SF6 decomposition component is of great significance for improving the accuracy of detection. In this paper, based on the density functional theory, the adsorption process and adsorption degree of SF6 decomposition components (SOF2, SO2F2, CO, SO2, and H2S) with three typical main gas cell materials (Al, Cu, and Fe) and two gas cell coating materials (Teflon and Au) were simulated. It was found that the adsorption of Teflon and Au with gas was weak in the five materials and that of Teflon was the weakest. The adsorption energy of the three main gas cell materials was 2.65–6.31 times that of Teflon. The simulation results were also verified by FTIR and the GC-Materials Studio (MS) method. FTIR results showed that Teflon and Au had the weakest influence on the infrared spectral absorption peak and the effect of the two materials on SOF2 and SO2F2 gas absorption peaks is only less than 0.1. The results of gas chromatograph-mass spectrometer (GC-MS) showed that the effects of Teflon materials and Au on gas concentration were 2%–9.41% and the effects of Cu, Fe, and Al on gas concentration were 4.48%–65.43%. Therefore, Au and Teflon are suitable as coating materials for gas cells, which can reduce the adsorption of gas and improve the accuracy of infrared spectroscopy measurement. The results of this paper provide a reference for the development of application of optical gas detection technology in SF6 decomposition component detection.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Spectroscopy and Laser Applications · High voltage insulation and dielectric phenomena
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Smart Grid Protection and Control, Nari Group Corporation , Nanjing, Jiangsu 211106, China
Funding
State Key Laboratory of Smart Grid Protection and Control
References (35)
Show source-provided references
1. Defect recognition and condition assessment of epoxy insulators in gas insulated switchgear based on multi-information fusion10.1016/j.measurement.2022.110701 ↗
2. Multi-wall Carbon Nanotube films sensor applied to SF6 PD detection
3. Partial discharge recognition through an analysis of SF6 decomposition products part 1: Decomposition characteristics of SF6 under four different partial discharges10.1109/tdei.2012.6148499 ↗
4. Effect of two adsorbents on SF6 experiment and analysis on adsorption of decomposition characteristic components
5. Effect of micro water and micro oxygen on SF6 under PD influence law of decomposition characteristic component ratio
6. Effect of micro-oxygen on characteristic components of SF6 partial discharge decomposition
7. Research on infrared spectrum characteristics and detection technology of environmental-friendly insulating medium C5F10O10.1016/j.vibspec.2022.103336 ↗
8. Analysis of the application of gas chromatographic analysis technology10.1088/1742-6596/1549/2/022016 ↗
9. A review of cavity-enhanced Raman spectroscopy as a gas sensing method10.1080/05704928.2019.1661850 ↗
10. A review of all-optical photoacoustic spectroscopy as a gas sensing method10.1080/05704928.2020.1760875 ↗
11. Ultra-broadband infrared gas sensor for pollution detection: The TRIAGE project10.1088/2515-7647/ac0542 ↗
12. Highly sensitive broadband differential infrared photoacoustic spectroscopy with wavelet denoising algorithm for trace gas detection10.1016/j.pacs.2020.100228 ↗
13. Simulation and experimental study on detection of SF6 decomposition gas based on infrared absorption spectroscopy
14. Long optical paths of large aperture10.1364/josa.32.000285 ↗
15. Off-axis paths in spherical mirror interferometers10.1364/ao.3.000523 ↗
16. Wide dynamic detection range of methane gas based on enhanced cavity absorption spectroscopy10.1088/1674-1056/ac2484 ↗
17. Symmetric nonconfocal Fabry–Perot cavity with a stable long optical path length and improved tolerance for angular alignment10.1117/1.oe.60.12.125107 ↗
18. Study on high sensitivity measurement method of hydrogen sulfide gas under long optical path10.1117/12.2537505 ↗
19. Research on grape deterioration process via volatiles-using long optical-path infrared spectroscopy and simplified E-nose
20. A study of FTIR spectrometry based on a long optical path on the emission rules of nitrous oxide from soil
21. Development of nitrogen dioxide online monitoring instrument in the atmosphere
22. FTIR measurement method for long optical path of plastic volatiles
23. Photoacoustic spectroscopy detection of respiratory dust absorption coefficient
24. Noble metal (Pt or Au)-doped monolayer MoS2 as a promising adsorbent and gas-sensing material to SO2, SOF2 and SO2F2: A DFT study10.1007/s00339-018-1629-y ↗
25. Pt & Pd decorated CNT as a workable media for SOF2 sensing: A DFT study10.1016/j.apsusc.2018.12.016 ↗
26. Adsorption and sensing of SO2 and SOF2 molecule by Pt-doped HfSe2 monolayer: A first-principles study10.1016/j.apsusc.2020.147242 ↗
27. Adsorption and sensing of CO and C2H2 by S-defected SnS2 monolayer for DGA in transformer oil: A DFT study10.1016/j.matchemphys.2020.123006 ↗
28. Rh-doped MoTe2 monolayer as a promising candidate for sensing and scavenging SF6 decomposed species: A DFT study10.1186/s11671-020-03361-6 ↗
29. Experimental sensing and density functional theory study of H2S and SOF2 adsorption on Au-modified graphene10.1002/advs.201500101 ↗
30. Adsorption and gas-sensing properties of Pt2–GaNNTs for SF6 decomposition products10.1016/j.apsusc.2020.146570 ↗
31. Nanomaterials-based gas sensors of SF6 decomposed species for evaluating the operation status of high-voltage insulation devices10.1049/hve.2019.0130 ↗
32. Humidity-sensing properties of chemically reduced graphene oxide/polymer nanocomposite film sensor based on layer-by-layer nano self-assembly10.1016/j.snb.2014.02.078 ↗
33. Facile fabrication of MoS2-modified SnO2 hybrid nanocomposite for ultrasensitive humidity sensing10.1021/acsami.6b02206 ↗
34. The adsorption of CO and NO on the MoS2 monolayer doped with Au, Pt, Pd, or Ni: A first-principles study10.1016/j.apsusc.2016.04.171 ↗
35. Theoretical screening into Ru-doped MoS2 monolayer as a promising gas sensor upon SO2 and SOF2 in SF6 insulation devices10.1080/00268976.2021.2018517 ↗