The formation and coagulation of soot aerosols generated by the pyrolysis of aromatic hydrocarbons

@article{Graham1975TheFA,
  title={The formation and coagulation of soot aerosols generated by the pyrolysis of aromatic hydrocarbons},
  author={S. C. Graham and J. B. Homer and J. L. J. Rosenfeld},
  journal={Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences},
  year={1975},
  volume={344},
  pages={259 - 285}
}
We report a study of the formation and growth of soot aerosols in incident shock flows of benzene, toluene, ethylbenzene and indene, highly diluted with argon at temperatures in the range 1600-2300 K at a total carbon concentration in the shock-heated gases of 2.0 x 1017 atoms/cm3. The extent of conversion of hydrocarbon into soot, i.e. the soot yield, during the shock flow was determined from extinction measurements at two different visible wavelengths, while the rate of growth of the soot… Expand

Figures from this paper

The modelling of the growth of soot particles during the pyrolysis and partial oxidation of aromatic hydrocarbons
  • S. C. Graham
  • Chemistry
  • Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
  • 1981
Previous light-scattering studies on aerosols generated by hydrocarbon pyrolysis in incident shock flows have shown, given a constant particulate volume fraction, that the observed scattered-lightExpand
Soot formation in shock-tube oxidation of hydrocarbons
Soot formation during oxidation of acetylene, allene, 1,3-butadiene, toluene, benzene and chlorobenzene was studied in argon-diluted mixtures behind reflected shock waves. The formation of soot inExpand
Simultaneous measurements of acetylene and soot during the pyrolysis of ethylene and benzene in a shock tube
Abstract Acetylene is one of the most important precursors of soot and contributes to soot growth by the hydrogen-abstraction acetylene-addition (HACA) mechanism. In this work, we undertakeExpand
Combustion kinetics of soot formation from toluene
The combustion kinetics of soot formation for toluene and other selected fuels was studied behind reflected shock waves over the temperature range 1400 to 2500 K and the pressure range 2.5 to 10 atmExpand
Effect of pressure on soot formation in the pyrolysis of n-hexane and the oxidation of fuel-rich mixtures of n-heptane behind reflected shock waves
The results of detailed kinetic simulations of the formation of soot particles in the pyrolysis of n-hexane–argon mixtures and in the oxidation of fuel-rich (φ = 5) n-heptane–oxygen–argon mixturesExpand
Soot formation in the pyrolysis of bezene/acetylene and acetylene/hydrogen mixtures at high carbon concentrations
The soot formation in the pyrolysis of benzene/acetylene mixtures and acetylene/hydrogen mixtures diluted in argon was measured behind reflected shock waves using a light absorption technique. ForExpand
Soot formation at elevated pressures and carbon concentrations in hydrocarbon pyrolysis
For the formation of soot in mixtures of ethylene, n -hexane, and benzene in argon behind reflected shock-wave induction periods, soot growth rate constants and soot yields were measured at variousExpand
Soot formation from heavy hydrocarbons behind reflected shock waves
Soot formation from heavy hydrocarbons (n-hexadecane, tolnene, n-heptylbenzene, and 1-methylna-phatalene) was studied behind reflected shock waves, using a light extinction technique. The highlyExpand
The collisional growth of soot particles at high temperatures
Recently, we have shown that the light-scattering behaviour of soot aerosols in incident shock flows (duration ≈ 3 ms) at ≈1800 K is consistent with the predictions of free-molecule coagulationExpand
Study of the soot nucleation zone of rich methane-oxygen flames
Some aspects of the soot nucleation processes which take place in the reaction zone of an atmospheric pressure premixed flat methane/oxygen flame have been studied using a laser light scatteringExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 20 REFERENCES
Shock-tube studies on the decomposition of tetramethyl-lead and the formation of lead oxide particles
  • J. Homer, I. Hurle
  • Chemistry
  • Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
  • 1972
The decomposition of tetramethyl-lead (TML) in dilute ( < 0.2 % vol.) mixtures with argon, argon + oxygen, and air, has been examined behind incident shock waves. The rate of decomposition of TML hasExpand
Optical and chemical investigations on fuel-rich methane-oxygen premixed flames at atmospheric pressure
Optical and chemical diagnostic techniques are used together in the study of flat premixed flames at atmospheric pressure. An experimental apparatus was built, in order to measure the angular andExpand
Theory of Particle Formation and Growth in Oxide Synthesis Flames
Abstract This work discusses those factors which determine ultimate particle size in the synthesis of pyrogenic silica. Pyrogenic or fumed silicas are produced commercially through the combustion ofExpand
Formation of Polycyclic Aromatic Hydrocarbons in a Vertical Flow Reactor
Abstract The profile of temperature, reagents, main reaction products, hydrocarbons and polycyclic aromatic hydrocarbons have been determined at different heights along a vertical flow reactor onExpand
Physical mechanisms in carbon formation in flames
A molecular beam-sampling system, combined with electrical deflection of the beam andelectron microscope analysis of beam deposits, was used to measure the size, size distribution, numberExpand
On the mechanism of carbon formation in flames
A physical model for carbon formation in flames is developed by assuming that positive ions serve as nuclei and that particles are ionized during growth and agglomeration. Analysis of the modelExpand
Coagulation of molten lead aerosols
A study is made of the kinetics by which particles in a high-temperature aerosol coagulate. The experimental method uses a light-scattering technique coupled to a shock tube, and allows a continuousExpand
Carbon formation in premixed flames
A specially invited review is presented of certain aspects of gas phase carbon formation in premixed flames with the object of stimulating discussion and future work in the field. Behaviour of a fuelExpand
Collision‐Rate Theory and the Coagulation of Free‐Molecule Aerosols
Collision‐rate theory is used to describe the collision and coagulation of aerosols moving in the free‐molecule regime where the particle diameter σ(v) is small compared to the mean free path L(g) ofExpand
Formation of polycyclic aromatics in rich premixed acetylene and ethylene flames
Abstract The concentration profiles of all identifiable stable species ranging from hydrogen to polycyclic aromatic hydrocarbons (pcah) are presented for fuel-rich premixed flat-flames of acetyleneExpand
...
1
2
...