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Title: Soot formation from polycyclic aromatics. Technical progress report, September 1, 1981-February 28, 1982

Abstract

During the period from September 1, 1981 to February 28, 1982, progress has been made in the following areas: (1) The experiments designed to determine soot particle size by Laser Doppler Velocimetry have been completed. (2) Soot formation in argon diluted mixtures of acetylene, allene, and 1,3-butadiene as well as in mixtures of these three compounds with toulene has been studied behind reflected shock waves by monitoring attenuation of a laser beam in both the visible (632.8nm) and the infrared (3.39 ..mu..m) regions of the spectrum. Experiments were conducted for temperatures in the range 1500 to 3100 K, reflected shock pressures in the range 0.05 to 0.70 Mpa, and for total carbon atom concentrations in the range (2.0 to 20.0) x 10/sup 23/ atoms/m/sup 3/. During the pyrolysis of individual hydrocarbons, a bell-shaped dependence of soot yield on temperature was observed for all three compounds similar to that previously reported for toluene. The results show that soot is formed more readily from allene than from butadiene. The experimental data obtained for toulene-additive mixtures indicate that allene and 1,3-butadiene enhance while acetylene inhibits soot formation during the pyrolysis of toulene. These results are interpreted in light of the previously proposed conceptualmore » model for soot formation in pyrolysis of aromatic hydrocarbons. (3) An empirical model for soot formation during pryolysis of aromatic hydrocarbons has been developed based upon the conceptual model proposed by us previously. The details of this empirical model are presented in Section II.« less

Authors:
Publication Date:
Research Org.:
Louisiana State Univ., Baton Rouge (USA). Dept. of Chemical Engineering
OSTI Identifier:
5260361
Report Number(s):
DOE/PC/30247-T3
ON: DE82017238
DOE Contract Number:  
FG22-80PC30247
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ACETYLENE; PYROLYSIS; ALLENE; BUTADIENE; SOOT; CHEMICAL REACTION YIELD; PARTICLE SIZE; TOLUENE; ADDITIVES; ARGON; EXPERIMENTAL DATA; LASERS; LOW PRESSURE; MATHEMATICAL MODELS; MIXTURES; RESEARCH PROGRAMS; SHOCK WAVES; VERY HIGH TEMPERATURE; ALKYNES; AROMATICS; CHEMICAL REACTIONS; DATA; DECOMPOSITION; DIENES; DISPERSIONS; ELEMENTS; FLUIDS; GASES; HYDROCARBONS; INFORMATION; NONMETALS; NUMERICAL DATA; ORGANIC COMPOUNDS; POLYENES; RARE GASES; SIZE; THERMOCHEMICAL PROCESSES; YIELDS; 400800* - Combustion, Pyrolysis, & High-Temperature Chemistry

Citation Formats

Frenklach, M. Soot formation from polycyclic aromatics. Technical progress report, September 1, 1981-February 28, 1982. United States: N. p., 1982. Web.
Frenklach, M. Soot formation from polycyclic aromatics. Technical progress report, September 1, 1981-February 28, 1982. United States.
Frenklach, M. Mon . "Soot formation from polycyclic aromatics. Technical progress report, September 1, 1981-February 28, 1982". United States.
@article{osti_5260361,
title = {Soot formation from polycyclic aromatics. Technical progress report, September 1, 1981-February 28, 1982},
author = {Frenklach, M},
abstractNote = {During the period from September 1, 1981 to February 28, 1982, progress has been made in the following areas: (1) The experiments designed to determine soot particle size by Laser Doppler Velocimetry have been completed. (2) Soot formation in argon diluted mixtures of acetylene, allene, and 1,3-butadiene as well as in mixtures of these three compounds with toulene has been studied behind reflected shock waves by monitoring attenuation of a laser beam in both the visible (632.8nm) and the infrared (3.39 ..mu..m) regions of the spectrum. Experiments were conducted for temperatures in the range 1500 to 3100 K, reflected shock pressures in the range 0.05 to 0.70 Mpa, and for total carbon atom concentrations in the range (2.0 to 20.0) x 10/sup 23/ atoms/m/sup 3/. During the pyrolysis of individual hydrocarbons, a bell-shaped dependence of soot yield on temperature was observed for all three compounds similar to that previously reported for toluene. The results show that soot is formed more readily from allene than from butadiene. The experimental data obtained for toulene-additive mixtures indicate that allene and 1,3-butadiene enhance while acetylene inhibits soot formation during the pyrolysis of toulene. These results are interpreted in light of the previously proposed conceptual model for soot formation in pyrolysis of aromatic hydrocarbons. (3) An empirical model for soot formation during pryolysis of aromatic hydrocarbons has been developed based upon the conceptual model proposed by us previously. The details of this empirical model are presented in Section II.},
doi = {},
url = {https://www.osti.gov/biblio/5260361}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {3}
}

Technical Report:
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