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Effect of argon dilution on the pre‐ignition oxidation kinetics of benzene
Author(s) -
Thyagarajan K.,
Bhaskaran K. A.
Publication year - 1991
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440150309
Subject(s) - argon , ignition system , diluent , dilution , benzene , chemistry , thermodynamics , kinetics , kinetic energy , autoignition temperature , stoichiometry , activation energy , analytical chemistry (journal) , chemical kinetics , bar (unit) , organic chemistry , physics , quantum mechanics , meteorology
Abstract Experimental and modelling studies on the high‐temperature oxidation of benzene have been done to study the effect of argon dilution on its pre‐ignition thermochemical kinetics. The ignition delay times of stoichiometric C 6 H 6 /O 2 mixtures are measured behind reflected shock waves at a total pressure of 4 bar with varying argon dilution (0–95%) for a wide range of temperatures (650–2200 K). A kinetic scheme with 60 elementary reactions among 23 reacting species is proposed which is able to predict the experimental results obtained in this as well as earlier studies. The model was subjected to a sensitivity analysis to identify the significant reactions. The effects of diluent concentration on the reaction rates and energy release history in the vicinity of the induction times are reported. Correlations are deduced to predict the ignition delay times. The thermal and kinetic effects of argon concentration on the ignition activation energy and induction times are examined.