ISSN:
0538-8066
Keywords:
Chemistry
;
Physical Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Acetylene and vinylacetylene mixtures were pyrolyzed at 400-500°C in the absence and presence of O2 or NO. The major product of the interaction between C2H2 and C4H4 is polymer, but benzene is also produced. Both the C2H2 removal and C6H6 formation rates arefirst-order in C2H2 and C4H4. The rate coefficients are \documentclass{article}\pagestyle{empty}\begin{document}$$ \log (k\{ {\rm C}_{\rm 2} {\rm H}_{\rm 2} \}, M^{ - 1} {\rm s}^{{\rm - 1}}) = 6.26 \pm 0.20 - (70.6 \pm 3.6)/2.3RT $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ \log (k\{ {\rm C}_{\rm 6} {\rm H}_{\rm 6} \}, M^{ - 1} {\rm s}^{{\rm - 1}}) = 8.65 \pm 0.39 - (125.9 \pm 5.4)/2.3RT $$\end{document} where R is the ideal gas constant in kJ/mol-K. Benzene formation occurs by two processes: a concerted molecular mechanism (≃60%) and a singlet diradical mechanism (≃40%).
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/kin.550180608
