Effect of helium nanoclusters on the spectroscopic properties of embedded SF6: Ionization, excitation and vibration

Dehdashti-Jahromi, M.; Farrokhpour, Hossein

doi:10.1016/j.saa.2016.10.033

Cited by 2 publications

(2 citation statements)

References 49 publications

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“…Using the ground-state electron density and energy, we determined the ionization energy (IE), electron affinity energy (EA), and molecular-orbital energy gap ( E g ) between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) . The ionization characteristics and stability of C 5 F 10 O and its decomposition products were evaluated.…”

Section: Methodsmentioning

confidence: 99%

Decomposition Mechanism of C₅F₁₀O: An Environmentally Friendly Insulation Medium

Zhang

Xiao

et al. 2017

Environ. Sci. Technol.

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SF, the most widely used electrical-equipment-insulation gas, has serious greenhouse effects. CFO has attracted much attention as an alternative gas in recent two years, but the environmental impact of its decomposition products is unclear. In this work, the decomposition characteristics of CFO were studied based on gas chromatography-mass spectrometry and density functional theory. We found that the amount of decomposition products of CFO, namely, CF, CF, CF, CF, CF, and CF, increased with increased number of discharges. Under a high-energy electric field, the C-C bond of CFO between carbonyl carbon and α-carbon atoms was most likely to break and generate CFCO•, CF• or CFCO•, CF• free radicals. CF•, and CF• free radicals produced by the breakage more easily recombined to form small molecular products. By analyzing the ionization parameters, toxicity, and environmental effects of CFO and its decomposition products, we found that CFO gas mixtures exhibit great decomposition and environmental characteristics with low toxicity, with great potential to replace SF.

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Section: Methodsmentioning

confidence: 99%

Decomposition Mechanism of C₅F₁₀O: An Environmentally Friendly Insulation Medium

Zhang

Xiao

et al. 2017

Environ. Sci. Technol.

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“…A significant disadvantage is its relatively high price. Moreover, helium atom has very small diameter and it easily diffuses through solid materials, and thus the losses occurs [15,16]. For purposes of our measurements, we used helium marked as HE-4.6.…”

Section: Methodsmentioning

confidence: 99%

Comparation of the impact of selected technical gases on properties of a pneumatic flexible coupling

2018

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An important part of the oscillating mechanical drives are flexible shaft couplings. The special use of the pneumatic flexible coupling is possibility to serve as mechanical drives tuners. Being examined in tuners mechanical drives there is also a research focus on the impact of industrial gases on the change of dynamic characteristics of pneumatic couplings. The paper investigates five different industrial gases, namely: air, helium (He-4.6), a mixture of propane and butane gas (C3H8+C4H10), argon (Ar) and nitrogen (N2) to see how these gases affect the dynamic characteristics of pneumatic flexible shaft coupling with marking 4-2/70 T-C.

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Effect of helium nanoclusters on the spectroscopic properties of embedded SF6: Ionization, excitation and vibration

Cited by 2 publications

References 49 publications

Decomposition Mechanism of C₅F₁₀O: An Environmentally Friendly Insulation Medium

Decomposition Mechanism of C₅F₁₀O: An Environmentally Friendly Insulation Medium

Comparation of the impact of selected technical gases on properties of a pneumatic flexible coupling

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Effect of helium nanoclusters on the spectroscopic properties of embedded SF6: Ionization, excitation and vibration

Cited by 2 publications

References 49 publications

Decomposition Mechanism of C5F10O: An Environmentally Friendly Insulation Medium

Decomposition Mechanism of C5F10O: An Environmentally Friendly Insulation Medium

Comparation of the impact of selected technical gases on properties of a pneumatic flexible coupling

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Product

Resources

About

Decomposition Mechanism of C₅F₁₀O: An Environmentally Friendly Insulation Medium

Decomposition Mechanism of C₅F₁₀O: An Environmentally Friendly Insulation Medium