Direct fluorination of carbon monoxide in microreactors

Navarrini, W.; Venturini, Francesco; Tortelli, V.; Basak, Soubir; Pimparkar, Ketan P.; Adamo, Andrea; Jensen, Klavs F.

doi:10.1016/j.jfluchem.2012.06.006

Cited by 16 publications

(9 citation statements)

References 22 publications

(19 reference statements)

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“…Direct fluorination of carbon monoxide was also carried out in microreactors by Venturini and co-workers. 132 Many previous studies have attempted to obtain a stream of pure COF 2 by direct fluorination of carbon monoxide with elemental fluorine or by electrochemical fluorination. However, these reactions are highly exothermic and therefore difficult to control, and so can easily lead to thermal runaway with poor selectivity.…”

Section: Gas-phase Substrates and Productsmentioning

confidence: 99%

Applications of Flow Microreactors in Electrosynthetic Processes

2017

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The fundamental advantages and potential benefits of flow microreactor technology include extremely large surface-to-volume ratios, precise control over temperature and residence time, extremely fast molecular diffusion, and increased safety during reactive processes. These advantages and benefits can be applied to a wide range of electrosynthetic techniques, and so the integration of flow microreactors with electrosynthesis has received significant research interest from both academia and industry. This review presents an up-to-date overview of electrosynthetic processes in continuous-flow microreactors. In addition, the advantages of continuous-flow electrochemistry are discussed, along with a thorough comparison of microreactor-based processes and conventional batch reaction systems.

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Section: Gas-phase Substrates and Productsmentioning

confidence: 99%

Applications of Flow Microreactors in Electrosynthetic Processes

2017

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“…Relevant studies have shown that COF 2 has strong biological toxicity and is highly corrosive. 25 Therefore, the production of this substance will cause damage to the health of operation and maintenance personnel and the safe operation of equipment. Under the simulation setting of this article (3.33% oxygen content), a few COF 2 molecules are generated at 800–2000 K. However, considering that the temperature of the fault discharge area in the gas-insulated equipment may be much higher than the temperature used in the simulation, it is necessary to carry out further experimental research on the content of harmful substances such as COF 2 in the HFO–N 2 –O 2 gas mixture discharge decomposition products.…”

Section: Resultsmentioning

confidence: 99%

Inhibition Effect of Solid Products and DC Breakdown Characteristics of the HFO1234Ze(E)–N₂–O₂ Ternary Gas Mixture

Liu

Wang

et al. 2021

ACS Omega

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HFO1234ze(E) is an environmentally friendly SF 6 substitute gas with prominent application potential. To suppress the generation of the HFO1234ze(E) solid decomposition products, which may cause great hazards to the gas–solid insulation strength, a gas mixing scheme screening method based on the reactive force field (ReaxFF) molecular dynamics (MD) simulation was innovatively proposed. The simulation results show that the inhibitory effect of O 2 on the formation of HFO1234ze(E) solid products is better than those of CO 2 and CF 4 . Further study shows that when O 2 accounts for 3.33% of the gas mixture, the solid precipitate content is reduced by 48%. The experimental study shows that an O 2 content of 3.33% can inhibit the generation of solid products by more than 50%. Besides, compared with HFO1234ze(E)-N 2 , the DC breakdown voltage of HFO1234ze(E)-N 2 -O 2 is slightly increased, and the breakdown voltage dispersion degree and continuous breakdown voltage drop rate are decreased. This work gives a feasible solution for the suppression of HFO1234ze(E) solid decomposition products and provides an efficient method for solving similar problems of environmentally friendly insulating gas in C/F/O/N systems.

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“…With regard to theoretical knowledge of calculations, it has been described in detail in our previous work [30,31]. The Dmol3 package was used to process exchange-related interactions using a local density approximation (LDA-PWC) approach to optimize the structure of c-C 4 F 8 and O 2 [25]. To model the possible reaction path, the stable molecular configuration with the lowest energy is needed for selection.…”

Section: Discussionmentioning

confidence: 99%

“…The Corona discharge performance of c-C 4 F 8 /N 2 is better than the same mixing ratio SF 6 /N 2 . If the c-C 4 F 8 /N 2 gas mixture is not liquefied at −30 • C, the content of c-C 4 F 8 in the gas mixture is at most about 15% [25]. Therefore, the pure c-C 4 F 8 , 15% c-C 4 F 8 /N 2 and with 3% O 2 were selected as samples in this paper.…”

Section: Methodsmentioning

confidence: 99%

The Influence of O2 on Decomposition Characteristics of c-C4F8/N2 Environmental Friendly Insulating Gas

et al. 2018

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The c-C 4 F 8 gas is considered to have great potential as a gaseous medium for gas-insulated equipment, due to its good insulation properties and its relatively low greenhouse gas potential (GWP) relative to SF 6 . However, the decomposition is an important indicator of its use in equipment. In this paper, the decomposition characteristics of c-C 4 F 8 and the influence by oxygen have been explored through experiments and theoretical calculations. Firstly, the breakdown test of mixed gas was carried out and the precipitated elements of the electrodes and breakdown products of gas mixture were analyzed by X-ray photoelectron spectroscopy (XPS) and gas chromatography mass spectrometry (GC-MS). At the same time, the differences in decomposition products have also been studied when a small amount of O 2 was present. The path and mechanism of c-C 4 F 8 decomposition is then discussed, based on density functional theory (DFT). The results show that the black powdery substance descends on the electrode surface after the breakdown of the mixture of c-C 4

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Direct fluorination of carbon monoxide in microreactors

Cited by 16 publications

References 22 publications

Applications of Flow Microreactors in Electrosynthetic Processes

Applications of Flow Microreactors in Electrosynthetic Processes

Inhibition Effect of Solid Products and DC Breakdown Characteristics of the HFO1234Ze(E)–N₂–O₂ Ternary Gas Mixture

The Influence of O2 on Decomposition Characteristics of c-C4F8/N2 Environmental Friendly Insulating Gas

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Direct fluorination of carbon monoxide in microreactors

Cited by 16 publications

References 22 publications

Applications of Flow Microreactors in Electrosynthetic Processes

Applications of Flow Microreactors in Electrosynthetic Processes

Inhibition Effect of Solid Products and DC Breakdown Characteristics of the HFO1234Ze(E)–N2–O2 Ternary Gas Mixture

The Influence of O2 on Decomposition Characteristics of c-C4F8/N2 Environmental Friendly Insulating Gas

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Inhibition Effect of Solid Products and DC Breakdown Characteristics of the HFO1234Ze(E)–N₂–O₂ Ternary Gas Mixture