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
Study of the absorption spectra of free radicals in flames
P.F. Jessen,A.G. Gaydon +1 more
TL;DR: In this paper, a modified multiple reflection system in which the image of the source is focused into the flame instead of on to the mirror surfaces has been developed, which reduces troubles due to defocusing of the light beam by refractive index gradients in the flame and gives better spatial resolution.
Journal ArticleDOI
Low-temperature chemistry triggered by probe cooling in a low-pressure premixed flame
Xiaoyuan Zhang,Yan Zhang,Tianyu Li,Yuyang Li,Jiabiao Zou,Philippe Dagaut,Jiuzhong Yang,Wei Li,Meirong Zeng,Hanfeng Jin,Wenhao Yuan,Fei Qi +11 more
TL;DR: In this paper, a stoichiometric laminar premixed flat flame of ethylene/oxygen/argon was investigated at 30'Torr using synchrotron vacuum ultraviolet photoionization mass spectrometry (SVUV-PIMS) in this work.
Journal ArticleDOI
Kinetics of formation and removal of atomic halogen ions X- by HX + e- H + X- in atmospheric pressure flames for chlorine, bromine and iodine
N. A. Burdett,A. N. Hayhurst +1 more
TL;DR: In this paper, it was shown from measurements of ion abundances that if a halogen X is added to a flame containing free electrons, then the negative ion X - is produced by dissociative attachment in the forward step of HX + e - ⇄X - +H.
Journal ArticleDOI
Mass-Spectrometric Sampling of Ions from Flames at Atmospheric Pressure: The Effects of Applied Electric Fields and the Variation of Electric Potential in a Flame
TL;DR: In this paper, the distribution of electrical potential between the burner and sampling system for a flame of H 2 + O 2 + diluent, doped with Cs, at atmospheric pressure was investigated.
Journal ArticleDOI
Identity of Ions in Some Flames
J. Deckers,A. van Tiggelen +1 more
TL;DR: In this paper, the possibility of mass spectrometric identification of the ions present in some flames has been shown and more results have now been obtained which suggest a comparison between different kinds of flames burning at a pressure of about 10 mm.
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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