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

Citation
Iv. Zhil'Tsova et al., Nonisothermal effects in the process of soot formation in ethylene pyrolysis behind shock waves, KINET CATAL, 41(1), 2000, pp. 76-89
Citations number
40
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
KINETICS AND CATALYSIS
ISSN journal
00231584 → ACNP
Volume
41
Issue
1
Year of publication
2000
Pages
76 - 89
Database
ISI
SICI code
0023-1584(200001/02)41:1<76:NEITPO>2.0.ZU;2-2
Abstract
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 critica l temperatures become close to 1600 K for all the systems studied. The esti mated standard enthalpy of carbon atom formation in the composition of soot particles is Delta H-f,H-Z approximate to 11 +/- 6 kJ/mol. A kinetic model is proposed for soot formation in ethylene pyrolysis that describes the ex perimental data. The calculated temperature of soot particles may differ su bstantially depending on the choice of a model for energy exchange in colli sions.