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Elementary reaction
About: Elementary reaction is a research topic. Over the lifetime, 2972 publications have been published within this topic receiving 76110 citations.
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TL;DR: In this paper, a one-dimensional elementary reaction kinetic model for solid oxide fuel-assisted steam electrolysis cell (SOFEC) is developed coupling heterogeneous elementary reactions, electrochemical reaction kinetics, electrode microstructure and transport processes of charge and mass.
41 citations
TL;DR: The proposed skeletal reaction scheme can be used to well understand the microcosmic reaction process of HCHO oxidation on Pt/TiO2 catalyst and is recognized as the rate-determining step of HCO2 dehydrogenation.
41 citations
TL;DR: In this article, the translational energy dependence of the total reaction cross section of the H + O2 (vibrational quantum number ν = 0) reaction was investigated experimentally employing a pulsed laser pump−probe technique and theoretically by means of quantum mechanical scattering calculations.
Abstract: The H + O2 → O + OH chain-branching reaction, one of the most important elementary reactions in combustion chemistry, represents a challenging benchmark system for testing dynamical theories against experiments. The translational energy dependence of the total reaction cross section of the H + O2 (vibrational quantum number ν = 0) reaction was investigated experimentally employing a pulsed laser pump−probe technique and theoretically by means of quantum mechanical scattering calculations. The present results indicate that there is no sharp increase in reactivity for translational energies Etr ≥ 1.4 eV as was suggested by earlier experiments and approximate dynamical calculations. Furthermore, our results indicate that the potential energy surface needs to be improved to achieve quantitative agreement between experiment and theory.
41 citations
TL;DR: In this article, a numerical study with a detailed chemistry mechanism has been conducted to investigate the chemical effects of steam on the temperature in methane oxy-steam combustion; steam is used to moderate the high flame temperature produced by combustion of the fuel using oxygen.
41 citations
TL;DR: In this article, the authors used resonance absorption spectroscopy to measure O atom concentration in shock treated H2-N2O-Ar and D2-D2O−Ar mixtures and found that only a few elementary reactions exerted any appreciable influence on the total oxidation process.
Abstract: Resonance absorption spectroscopy has been used to measure O atom concentration in shock treated H2–N2O–Ar and D2–N2O–Ar mixtures. Four compositions were studied over the temperature range 1919–2781 K for the H2‐containing mixtures and 2097–2481 K for those containing D2. Only a few elementary reactions exerted any appreciable influence on the total oxidation process so that the rate coefficients of those reactions could be deduced. Primary sensitivity under all conditions was to the rate coefficients of the reactions directly responsible for the formation and removal of oxygen atoms. We find O+H2→OH+H, k = 2.3E14 exp(−57.5 kJ/RT) cm3 mol−1 s−1 and O+D2→OD+D, k = 1.6E14 exp(−59.6 kJ/RT) cm3 mol−1 s−1. Under our conditions the reaction of H or D atoms with N2O was insignificant, in contrast to the observations of Dean at higher concentrations. The isotope effect for this reaction is close to 1.6 throughout our temperature range.
41 citations