Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 27 (1995), S. 1207-1220 
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The NH3/NO2 system has been investigated experimentally in an isothermal flow reactor in the temperature range 850-1350 K. The experimental data were interpreted in terms of a detailed reaction mechanism. The flow reactor results, supported by a theoretical analysis of the NH2—NO2 complex, suggest that the NH2 + NO2 reaction has two major product channels, both proceeding without activation barriers: Our findings indicate that the N2O + H2O channel is dominant at low temperatures while H2NO + NO dominates at high temperatures. The rate constant for reaction (R21) is estimated to be 3.5 · 1012 cm3/mol-s in the temperature range studied with an uncertainty of a factor of 3. © 1995 John Wiley & Sons, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 28 (1996), S. 217-234 
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Using chemical kinetic modeling, we have investigated the feasibility of using sodium hydroxide (a representative alkali-metal compound) to control nitrous oxide emissions from combustion sources. The key reaction is \documentclass{article}\pagestyle{empty}\begin{document}$${\rm N}_a {\rm + N}_{2} {\rm O } \leftrightarrow {\rm NaO + N}_{2}$$\end{document} where the sodium atom is produced by the reaction \documentclass{article}\pagestyle{empty}\begin{document}$${\rm NaOH + H } \leftrightarrow {\rm Na + H}_{2} {\rm O}$$\end{document} when small amounts of fuel are added to lean combustion products. Because sodium hydroxide is regenerated by \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm NaO + H}_{2} {\rm O } \leftrightarrow {\rm NaOH + OH} $$\end{document} one sodium atom is potentially capable of destroying several N2O molecules. The mechanism is discussed in detail. Moreover, we have studied the possibility of using NaOH in conjunction with RAPRENOX (cyanuric acid injection) to control NO x emissions without producing N2O as a by-product. The results are discussed at length. © 1996 John Wiley & Sons, Inc.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 29 (1997), S. 253-259 
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: With potential-energy-surface parameters provided by Walch's calculations of the reaction path, we have calculated the thermal rate coefficient for the reaction, \documentclass{article}\pagestyle{empty}\begin{document}$$ CH+N_2 \longleftrightarrow HCN + N.\eqno(R1) $$\end{document} The theory employed assumes that the change in the reaction of the electron spin has little or no effect on the rate coefficient. The resulting expression for k1, \documentclass{article}\pagestyle{empty}\begin{document}$$ k_1 = 3.68 \times 10^7 {\rm T}^{{\rm 1}{\rm .42}} \exp ({{ - 20723} \mathord{\left/ {\vphantom {{ - 20723} {{\rm RT}}}} \right. \kern-\nulldelimiterspace} {{\rm RT}}}){{{\rm cm}^{\rm 3} } \mathord{\left/ {\vphantom {{{\rm cm}^{\rm 3} } {{\rm mole} - \sec }}} \right. \kern-\nulldelimiterspace} {{\rm mole} - \sec }} $$\end{document} in the temperature range, 1000 K ≤ T ≤ 4000 K, is in remarkably good agreement with the limited amount of experimental data available, suggesting that the assumption is valid. The origins of the “prompt-NO” phenomenon, our analysis of reaction (RI), and comparison of the results with experiment are all discussed in detail. © 1997 John Wiley & Sons, Inc. Int J Chem Kinet 29: 253-259, 1997.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 29 (1997), S. 275-287 
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In the present investigation the non-RRKM behavior in the title reaction is quantified in two different ways: (1) Quasiclassical trajectory calculations of the thermal rate coefficient are compared with results from a microcanonical variational transition-state theory/RRKM model. Results on both the Varandas DMBE IV and Melius-Blint potentials indicate that the non-RRKM behavior acts to reduce the thermal rate coefficient by about a factor of two, independent of temperature from 250 K to 5500 K. The QCT thermal rate coefficients on the two potentials are in remarkably good agreement with experiment and with each other over the entire temperature range. (2) The non-RRKM behavior as a classical phenomenon is demonstrated and quantified on both potentials by a direct test of the fundamental assumption. Complex-forming classical trajectories, started as either O + OH or H + O2, are shown preferentially to return to the region of configuration space from which they were started. This test is discussed in detail in the text. The transition of the non-RRKM behavior from classical to quantum mechanics is also discussed. © 1997 John Wiley & Sons, Inc. Int J Chem Kinet 29: 275-287, 1997.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 30 (1998), S. 223-228 
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Using stationary-point information from a BAC-MP4 potential-energy surface and statistical-dynamical methods, we have calculated the total rate coefficient for the two-channel reaction,\documentclass{article}\pagestyle{empty}\begin{document}$ CH3+NO\rightarrow HCN+H2O\quad (R1) $\end{document}\documentclass{article}\pagestyle{empty}\begin{document}$ \rightarrow H2CN+OH,\quad (R2) $\end{document}in the temperature range 1000 K≥T≥2500 K. The result obtained,\documentclass{article}\pagestyle{empty}\begin{document}$ kT=3.0 \times 10-1T3.52exp(-3950/RT) cm3/mole s, $\end{document}is in excellent agreement with recent shock-tube measurements of kT by Braun-Unkhoff, et al. and Hennig and Wagner. Qualitative considerations suggest that the radical channel (R2) is dominant in this temperature range. The analysis and the results are discussed in some detail. © 1998 John Wiley & Sons, Inc. Int J Chem Kinet 30: 223-228, 1998.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...