Journal ArticleDOI
Mass spectrometric sampling of flames: how ionic equilibria in flames produce sampling falsifications and “fake” ions, but provide kinetic and thermodynamic data on the reaction occurring
TLDR
In this paper, it was shown that if a positive ion reacts exothermally in a reversible reaction with a time constant briefer than ≈ 0.5 µs, that reaction will be equilibrated early in the flame and if the orifice is small, the equilibrium will be just fast enough to shift position to that for a temperature reduced in both the thermal boundary layer around the inlet, and in accelerating to the speed of sound.About:
This article is published in Progress in Energy and Combustion Science.The article was published on 2022-01-01. It has received 5 citations till now. The article focuses on the topics: Chemistry & Body orifice.read more
Citations
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Journal ArticleDOI
Cationic structure of premixed near-stoichiometric CH4/O2/Ar flames at atmospheric pressure: New insights from mass spectrometry, quantum chemistry, and kinetic modeling
Denis A. Knyazkov,Ilya E. Gerasimov,Tatyana A. Bolshova,Vitaly G. Kiselev,Andrey G. Shmakov,A. A. Paletsky +5 more
TL;DR: In this article , the effect of a nickel sampling cone used in the measurements on the flame was comprehensively modeled using a two-dimensional direct numerical simulation of reacting flow near the axially symmetric probe along with a reduced chemical kinetic mechanism.
Journal ArticleDOI
Technologies Integration towards Bio-fuels Production: A State-of-the-art Review
TL;DR: In this paper , a comprehensive review concerning the state-of-the-art conceptual designs of technologies integration as well as their performances is urgently needed for promoting future development of integrated bio-fuels production technologies.
Journal ArticleDOI
Investigation on the Effect of Charge Injection from Non-Thermal Plasma on Soot Formation in Laminar Coflow Diffusion Flame
Yong Tan,Yichen Zong,Maurin Salamanca,Jacob W. Martin,Jochen A.H. Dreyer,Jethro Akroyd,Wenming Yang,Markus Kraft +7 more
TL;DR: In this article , a modified coflow burner was developed to study the effect of charge injection from a nonthermal plasma into three helium-diluted laminar coflow diffusion ethylene flames.
Journal ArticleDOI
Experimental and kinetic modeling study of the positive ions in premixed ethylene flames over a range of equivalence ratios
Denis A. Knyazkov,Andrey V. Cherepanov,Vitaly G. Kiselev,Ilya E. Gerasimov,Tina Kasper,Andrey G. Shmakov +5 more
TL;DR: In this paper , the spatial distributions of positive ions in atmospheric-pressure burner-stabilized premixed flames of ethylene/oxygen/argon mixtures in a wide range of equivalence ratios ϕ = 0.4÷1.5.
Journal ArticleDOI
A Review on 1-D Nanomaterials: Scaling-Up with Gas-Phase Synthesis.
TL;DR: In this paper , a review of recent developments, applications, and capabilities in gas-phase synthesis methods of nanowire arrays is presented, as well as remaining challenges and needs are addressed to advance this field.
References
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Journal ArticleDOI
The effects of applied electric fields on the mass spectrometric sampling of ions in atmospheric-pressure flames
S.D.T. Axford,Allan N. Hayhurst +1 more
TL;DR: In this article, an atmospheric pressure flames has been sampled continuously through a small orifice into a vacuum system housing a mass spectrometer, and the total ion currents were measured as a function of both the voltage difference between burner and nozzle, and also between the nozzle and the collecting needle.
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« Étude cinétique des ions hydratés H3O+, (H2O)n dans les gaz brulés d’une flamme méthane-oxygène »
Journal ArticleDOI
Kinetic and thermodynamic measurements of the reactions of the positive ions, Mn + and MnOH + , formed by adding manganese to fuel-rich flames of either H 2 + O 2 or C 2 H 2 + O 2
TL;DR: In this article, mass spectrometric sampling of flat, fuel-rich flames of H 2 or C 2 H 2, burning at 1.5 p.p.m. and at 1800-2650 K, has revealed that the ions MnOH + and Mn+ are present in such flames, when seeded with amounts of manganese less than 1 p.m., provided it was hotter than 2100 K. Free electrons were the only negatively charged species.
Journal ArticleDOI
Construction of a mass spectrometer for sampling ions from diffusion flames
TL;DR: In this article, the authors describe the construction and calibration of a mass spectral system for investigation of ions produced in diffusion flames, using Ni-63 as a source for the ionization of nitrogen gas.
Journal ArticleDOI
Ionic structure of laminar flame at combustion of alcanes and their derivatives
TL;DR: Ion distribution in low pressure flames has been studied by mass spectrometry with molecular beam sampling as mentioned in this paper, and it has been shown that the ionic composition of the flame front depend strongly on the type of fuel, but strongly on fuel/oxidant ratio.
Related Papers (5)
Hydration of gas-phase ions and the measurement of boundary-layer cooling during flame sampling into a mass spectrometer
Electrical effects during the mass spectrometric sampling of ions from hot flame gases at atmospheric pressure
S.D.T. Axford,Allan N. Hayhurst +1 more