A5006947803- Advanced Combustion Engine Technologies
- Catalytic Processes in Materials Science
- Heat transfer and supercritical fluids
- Catalysis and Oxidation Reactions
- Biodiesel Production and Applications
- Combustion and flame dynamics
- Thermochemical Biomass Conversion Processes
- Atmospheric chemistry and aerosols
- Thermal and Kinetic Analysis
- Chemical Thermodynamics and Molecular Structure
- Advanced Chemical Physics Studies
- Free Radicals and Antioxidants
- Mass Spectrometry Techniques and Applications
- Combustion and Detonation Processes
- Rocket and propulsion systems research
- Energetic Materials and Combustion
- Lignin and Wood Chemistry
- Computational Drug Discovery Methods
- Phase Equilibria and Thermodynamics
- Industrial Gas Emission Control
- Advanced Thermodynamics and Statistical Mechanics
- Spectroscopy and Chemometric Analyses
- Spectroscopy and Laser Applications
- Catalysis for Biomass Conversion
- Ammonia Synthesis and Nitrogen Reduction
Université de Lorraine
2016-2025
Centre National de la Recherche Scientifique
2015-2024
Laboratoire Réactions et Génie des Procédés
2015-2024
University of Puerto Rico at Carolina
2019
Lawrence Livermore National Laboratory
2007-2009
Laboratoire de Génie Chimique
2006
A wide-range experimental and theoretical investigation of ammonia gas-phase oxidation is performed, a predictive, detailed kinetic model developed.
The oxidation of neat methane (CH4) and CH4 doped with NO2 or NO in argon has been investigated a jet-stirred reactor at 107 kPa, temperatures between 650 1200 K, fixed residence time 1.5 s, for different equivalence ratios (Φ), ranging from fuel-lean to fuel-rich conditions. Four diagnostics have used: gas chromatography (GC), chemiluminescence NOx analyzer, continuous wave cavity ring-down spectroscopy (cw-CRDS) Fourier transform infrared (FTIR). In the case methane, onset temperature was...
The aim of this paper is to review recent progress in detection and quantification hydroperoxides, understand their reaction kinetics combustion environments. Hydroperoxides, characterized by an OOH group, are ubiquitous the atmospheric oxidation volatile organic compounds (∼300 K), liquid gas phase fuel components at elevated temperatures (∼400–1000 K). They responsible for two-stage ignition internal engines they play important role formation evolution secondary aerosols atmosphere....
Ammonia has long been considered as a candidate vector for power generation, and specifically gained significant interest recently. Though it is not free of drawbacks, ammonia identified promising potential alternative fuel future generation. Current studies growing body works in this direction drive us closer to viable solution an important transition into cleaner the energy sector. In perspective, we explore use combustion applications (with without additives) cells. The objective work...
Understanding the chemistry behind oxidation of ammonia/hydrogen mixtures is crucial for ensuring flexible use such in several applications, related to propulsion systems and power generation. In this work, blends was investigated through an experimental kinetic-modeling study, where low- intermediate-temperature conditions were considered. An campaign performed a flow reactor, at stoichiometric near-atmospheric pressure (126.7 kPa). The mole fraction fuels, oxidizer final products measured....
This paper presents new experimental measurements of the laminar flame velocity components natural gas, methane, ethane, propane, and n-butane as well binary tertiary mixtures these compounds proposed surrogates for gas. These have been performed by heat flux method using a newly built flat adiabatic burner at atmospheric pressure. The composition investigated air/hydrocarbon covers wide range equivalence ratios, from 0.6 to 2.1, which it is possible sufficiently stabilize flame. Other...
Intermediate detected: The design of internal combustion engines relies on a good understanding the mechanism auto-ignition hydrocarbons. A key assumption this mechanism, which was commonly accepted but never proven, has now been experimentally demonstrated: formation ketohydroperoxides observed under conditions close to those actually before auto-ignition.
The oxidation of dimethyl ether (DME) was studied using a jet-stirred reactor over wide range conditions: temperatures from 500 to 1100 K; equivalence ratios 0.25, 1, and 2; residence time 2 s; pressure 106.7 kPa (close the atmospheric pressure); an inlet fuel mole fraction 0.02 (with high dilution in helium). Reaction products were quantified two analysis methods: gas chromatography continuous wave cavity ring-down spectroscopy (cw-CRDS). cw-CRDS enabled quantification formaldehyde, which...
The influence of the addition ammonia on oxidation methane was investigated both experimentally and numerically. Experiments were carried out at atmospheric pressure, using a fused silica jet-stirred reactor, recrystallized alumina tubular reactor designed purpose to reach temperatures as high ∼2000 K. A temperature range 600–1200 K in residence time 1.5 s, while experiments flow between 1200 2000 K, for fixed about 25 ms reactive zone. methane/ammonia mixture, diluted helium, used reactors...