International Journal of Chemical Kinetics
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Reactions of N2(A3Σ)
International Journal of Chemical Kinetics - Tập 20 Số 1 - Trang 75-92 - 1988
AbstractN2(A3Σ), the lowest electronically excited state of N2, has a long and
distinguished history due to its role in nitrogen discharges and the nitrogen
afterglow. Recently, the production of N2(A) via photolysis and chemiluminescent
reactions has been newly explored, and new facets of its reactivity have been
uncovered. N2(A) is unusual, in that its deactivation probability in collision
with ...
Autoignition of heptanes; experiments and modeling
International Journal of Chemical Kinetics - Tập 37 Số 12 - Trang 728-736 - 2005
AbstractThere is much interest in determining the influence of molecular
structure on the rate of combustion of hydrocarbons; the C7H16 isomers of
heptane have been selected here as they exemplify all the different structural
elements present in aliphatic, noncyclic hydrocarbons.With the exception of
n‐heptane itself, no autoignition studies have been carried out to date on the
other isomers of he...
A high‐temperature chemical kinetic model for primary reference fuels
International Journal of Chemical Kinetics - Tập 39 Số 7 - Trang 399-414 - 2007
AbstractA chemical kinetic mechanism has been developed to describe the
high‐temperature oxidation and pyrolysis of n‐heptane, iso‐octane, and their
mixtures. An approach previously developed by this laboratory was used here to
partially reduce the mechanism while maintaining a desired level of detailed
reaction information. The relevant mechanism involves 107 species undergoing 723
reactions and ...
Shock tube measurements of branched alkane ignition times and OH concentration time histories
International Journal of Chemical Kinetics - Tập 36 Số 2 - Trang 67-78 - 2004
AbstractIgnition times and hydroxyl (OH) radical concentration time histories
were measured behind reflected shock waves during the oxidation of three
branched alkanes: iso‐butane (2‐methylpropane), iso‐pentane (2‐methylbutane),
and iso‐octane (2,2,4‐trimethylpentane). Initial reflected shock conditions
ranged from 1177 to 2009 K and 1.10 to 12.58 atm with dilute fuel/O2/Ar mixtures
varying in fue...
Kinetics of the esterification of acetic acid with 2‐propanol: Impact of different acidic cation exchange resins on reaction mechanism
International Journal of Chemical Kinetics - Tập 38 Số 10 - Trang 593-612 - 2006
AbstractThe kinetics of the esterification of acetic acid with the secondary
alcohol, 2‐propanol, catalyzed by the cation exchange resins, Dowex 50Wx8‐400,
Amberlite IR‐120, and Amberlyst 15 has been studied at temperatures of 303, 323,
and 343 K; acid to alcohol molar ratios of 0.5, 1, and 2; and catalyst loadings
of 20, 40, and 60 g/L. The equilibrium constant was experimentally determined,
and ...
Kinetics and mechanism for the oxidation of 1,1,1‐trichloroethane
International Journal of Chemical Kinetics - Tập 22 Số 6 - Trang 577-590 - 1990
AbstractThe reaction mechanisms for oxidation of CH3CCl2 and CCl3CH2 radicals,
formed in the atmospheric degradation of CH3CCl3 have been elucidated. The
primary oxidation products from these radicals are CH3CClO and CCl3CHO,
respectively. Absolute rate constants for the reaction of hydroxyl radicals with
CH3CCl3 have been measured in 1 atm of Argon at 359, 376, and 402 K using pulse
radiolysis co...
The flash photolysis—shock tube technique using atomic resonance absorption for kinetic studies at high temperatures
International Journal of Chemical Kinetics - Tập 17 Số 3 - Trang 315-326 - 1985
AbstractA flash photolysis‐shock tube technique is described for making kinetic
measurements at high temperature. Coupled with sensitive atomic resonance
absorption detection, this method allows bimolecular rate constants for
atom‐molecule reactions to be measured directly under conditions free from
kinetic complications. Experiments were performed in the reflected shock regime,
and the temperatur...
Nickel peroxide: A more probable intermediate in the Ni(II)‐catalyzed decomposition of peroxomonosulfate
International Journal of Chemical Kinetics - Tập 39 Số 6 - Trang 320-327 - 2007
AbstractThe Ni(II) ion catalyzed thermal decomposition of peroxomonosulfate
(PMS) was studied in the pH range 3.42–5.89. The rate is first order in [PMS]
and Ni(II) ion concentrations. At pH greater than or equal to 5.23, the reaction
becomes zero order in [PMS] and this changeover in the order of the reaction
occurs at a higher concentration of nickel ions. The first‐order kinetics in PMS
can be ...
A pyrolysis mechanism for ammonia
International Journal of Chemical Kinetics - Tập 22 Số 5 - Trang 513-535 - 1990
AbstractThe mechanism of NH3 pyrolysis was investigated over a wide range of
conditions behind reflected shock waves. Quantitative time‐history measurements
of the species NH and NH2 were made using narrow‐linewidth laser absorption.
These records were used to establish an improved model mechanism for ammonia
pyrolysis. The risetime and peak concentrations of NH and NH2 in this
experimental databa...
Constant time interval method for analysis of reaction rate data
International Journal of Chemical Kinetics - Tập 5 Số 4 - Trang 577-582 - 1973
AbstractIn the study of chemical kinetics, many integrated reaction rate
equations have the form In [f(A) + a] = bt + c, where a, b, and c are constants
and f(A) is some function of the concentration of a reactant (or product) which
can be calculated from the data. The left‐hand side of this equation cannot be
graphed versus time if the constant a is unknown. However, it is shown that
f(A2) varies...
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