TITLE

Energy dependencies of fast reactions of positive ions X+ with HCl from near thermal to [bar_over_tilde:_approx._equal_to]2 eV center-of-mass collision energy (X+=H+,H2+,H3+,N+,N2+,Ar+,C+,CH+, CH2+,CH3+,CH4+,CH5+)

AUTHOR(S)
Glosik, J.; Freysinger, W.; Hansel, A.; Spanel, P.; Lindinger, W.
PUB. DATE
May 1993
SOURCE
Journal of Chemical Physics;5/1/1993, Vol. 98 Issue 9, p6995
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The rate coefficients for the reactions of the ions H+, H2+, H3+, N+, N2+, Ar+, C+, CH+, CH2+, CH3+, CH4+, and CH5+ with HCl have been measured as a function of reactant ion/reactant neutral average center-of-mass kinetic energy (KEc.m.). The measurements were performed using a selected ion flow drift tube operated at 300 K with helium buffer gas. Most of these reactions have rate coefficients close to their collisional values at ambient temperature and all of them exhibit a pronounced KEc.m. dependence. A simple model is proposed, in which the measured dependence of the rate coefficients on KEc.m. is expressed in terms of the kinetic-energy dependence of the rate unimolecular decomposition of the intermediate complex formed in the ion-neutral collision.
ACCESSION #
7618689

 

Related Articles

  • State-to-state kinetic description of non-equilibrium radiative gas flow. Chikhaoui, A.; Kustova, E. V. // AIP Conference Proceedings;2001, Vol. 585 Issue 1, p680 

    The state-to-state kinetic theory approach is applied for the investigation of radiative reacting gas mixture flows with strong vibrational and chemical non-equilibrium. A closed system of macroscopic equations taking into account the coupling of vibrational relaxation, chemical reactions and...

  • On Two Kinetic Models for Chemical Reactions: Comparisons and Existence Results. Groppi, Maria; Polewczak, Jacek // Journal of Statistical Physics;Oct2004, Vol. 117 Issue 1/2, p211 

    Two kinetic theories for bimolecular chemical reactions in dilute gases are analyzed and compared. Reactive scattering kernels are constructed, satisfying microreversibility principles and yielding a physically plausible link between the two models. Mathematical properties and in particular the...

  • A Kinetic Model for Chemical Reactions without Barriers. Kremer, Gilberto M.; Soares, Ana Jacinta // AIP Conference Proceedings;12/31/2008, Vol. 1084 Issue 1, p105 

    A system of coupled Boltzmann equations (BE) is here proposed for a binary gaseous mixture undergoing elastic and reactive collisions. Reactive cross sections without activation energy, i.e. without barriers, are adopted to model the chemical process, whereas differential cross sections of rigid...

  • Spectral Distribution of Scattered Light from a Chemical Relaxation System. Marques, Wilson; Kremer, Gilberto M.; Bianchi, Miriam Pandolfi; Soares, Ana Jacinta // AIP Conference Proceedings;5/20/2011, Vol. 1333 Issue 1, p673 

    The aim of this work is to describe the light scattering spectra of a quaternary reacting gas mixture from the macroscopic field equations derived from the kinetic BGK-type model proposed by the authors in a previous paper. The study is developed in a hydrodynamic regime for which the system of...

  • Kinetic Theory of Simple Reacting Spheres I. Polewczak, Jacek; Soares, Ana Jacinta // AIP Conference Proceedings;5/20/2011, Vol. 1333 Issue 1, p117 

    We consider physical and mathematical aspects of the model of simple reacting spheres (SRS) in the kinetic theory of chemically reacting fluids. The SRS, being a natural extension of the hard-sphere collisional model, reduces itself to the revised Enskog theory when the chemical reactions are...

  • Modeling chemical reactions for conformationally mobile systems with force field methods. Olsen, Per T.; Jensen, Frank // Journal of Chemical Physics;2/22/2003, Vol. 118 Issue 8, p3523 

    A previously proposed method for modeling transition structures as minima on the seam of two force field energy functions, denoted SEAM, is analyzed with respect to improvements in the functional form of key energetic terms and parameters. It is shown that the SEAM method is capable of...

  • Hydrodynamic simulation of fuel-reactor in chemical looping combustion process. Wang Shuai; Yang Yunchao; Lu Huilin; Wang Jiaxing; Xu Pengfei; Liu Guodong // Chemical Engineering Research & Design: Transactions of the Inst;Sep2011, Vol. 89 Issue 9, p1501 

    A multiphase CFD-based model with gas-solid hydrodynamics and chemical reactions is used to model flow behavior of gas and particles in the fuel reactor of chemical looping combustion process. The granular kinetic theory model is used to model the interaction of particle collisions. The friction...

  • Activation barriers for series of exothermic homologous reactions. III. Reactions of s2 metal atoms with N2O and O2. Futerko, Peter M.; Fontijn, Arthur // Journal of Chemical Physics;5/1/1993, Vol. 98 Issue 9, p7004 

    Potential energy curves are derived for the rate-limiting channels of reactions of s2 metal atoms with N2O and O2, for which both reactants are in their ground electronic states. Activation barriers and rate coefficients are derived from these curves and are compared with the available...

  • Variational transition-state theory calculation using the direct dynamics method: NH3+H→NH2+H2 reaction. Espinosa-García, J.; Corchado, J. C. // Journal of Chemical Physics;7/15/1994, Vol. 101 Issue 2, p1333 

    The title reaction has been studied following the ‘‘direct dynamics’’ method, which uses information on electronic structure energy and energy derivatives calculated ab initio along the minimum energy path. With this information, the rate constants were calculated for...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics