Nonisothermal effects in the process of soot formation in ethylene pyrolysis behind shock waves

The nonisothermal nature of hydrocarbon pyrolysis explains the differences in the critical temperatures of soot formation in the experimental studies of these processes. When reaction heats are taken into account, the critical temperatures become close to 1600 K for all the systems studied. The esti...

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Bibliographic Details
Published inKinetics and catalysis Vol. 41; no. 1; pp. 76 - 89
Main Authors Zhil’tsova, I. V., Zaslonko, I. S., Karasevich, Yu. K., Wagner, H. Gg
Format Journal Article
LanguageEnglish
Published New York Springer Nature B.V 01.01.2000
Subjects
Enthalpy
Ethylene
Pyrolysis
Shock waves
Soot
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Summary:The nonisothermal nature of hydrocarbon pyrolysis explains the differences in the critical temperatures of soot formation in the experimental studies of these processes. When reaction heats are taken into account, the critical temperatures become close to 1600 K for all the systems studied. The estimated standard enthalpy of carbon atom formation in the composition of soot particles is δHf, z. ≈ 11 ±6 kJ/mol. A kinetic model is proposed for soot formation in ethylene pyrolysis that describes the experimental data. The calculated temperature of soot particles may differ substantially depending on the choice of a model for energy exchange in collisions.
ISSN:0023-1584
1608-3210
DOI:10.1007/BF02756145