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
Ion chemistry of transition metals in hydrocarbon flames. I. Cations of Fe, Co, Ni, Cu, and Zn
TL;DR: In this article, the authors measured the concentration profiles of individual and total cations as a function of distance along the flame axis, and also mass spectra at a fixed point in the burnt gas.
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Ionization of Alkaline Earth Additives in Hydrogen Flames. II. Kinetics of Production and Recombination of Ions
TL;DR: In this paper, mass spectrometric measurements have been made of the concentrations of each ion along flames of H 2 +O 2 +N 2 seeded with trace quantities of calcium or strontium.
Journal ArticleDOI
Mass-spectrometric study of the production and recombination of BaOH+ ions and free electrons from barium added to flames of H2+ O2+ Ar
TL;DR: Barium has been added in trace amounts to a variety of atmospheric-pressure flames of H2+ O2+ Ar as discussed by the authors, and the ions present were studied by continuously sampling a flame into a quadrupole mass spectrometer.
Journal ArticleDOI
Alkaline earth flame chemistry
D. E. Jensen,G. A. Jones +1 more
TL;DR: In this article, the results of photometric measurements on fuel-rich, atmospheric-pressure, laminar, premixed H 2 + O 2 + N 2 flames with and without small proportions of added calcium, strontium and barium are reported.
Journal ArticleDOI
Kinetics of electron attachment to oxygen and water in flames
TL;DR: In this article, a study of the kinetics of electron attachment to oxygen and water in flames is presented, showing that the rate coefficients suggest a surprisingly large negative temperature coefficient, and that attaching electrons are at much higher temperatures and pressures than normal.
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S.D.T. Axford,Allan N. Hayhurst +1 more