Standard

Formation of charged soot aggregates by combustion and pyrolysis: charge distribution and photophoresis. / Karasev, V.V.; Ivanova, N.A.; Sadykova, A.R. et al.
In: Journal of Aerosol Science, Vol. 35, No. 3, 01.03.2004, p. 363-381.

Research output: Contribution to journal › Article › peer-review

Harvard

Karasev, VV, Ivanova, NA, Sadykova, AR, Kukhareva, N, Baklanov, AM, Onischuk, AA, Kovalev, FD & Beresnev, SA 2004, 'Formation of charged soot aggregates by combustion and pyrolysis: charge distribution and photophoresis', Journal of Aerosol Science, vol. 35, no. 3, pp. 363-381. https://doi.org/10.1016/j.jaerosci.2003.10.006

APA

Karasev, V. V., Ivanova, N. A., Sadykova, A. R., Kukhareva, N., Baklanov, A. M., Onischuk, A. A., Kovalev, F. D., & Beresnev, S. A. (2004). Formation of charged soot aggregates by combustion and pyrolysis: charge distribution and photophoresis. Journal of Aerosol Science, 35(3), 363-381. https://doi.org/10.1016/j.jaerosci.2003.10.006

Vancouver

Karasev VV, Ivanova NA, Sadykova AR, Kukhareva N, Baklanov AM, Onischuk AA et al. Formation of charged soot aggregates by combustion and pyrolysis: charge distribution and photophoresis. Journal of Aerosol Science. 2004 Mar 1;35(3):363-381. doi: 10.1016/j.jaerosci.2003.10.006

Author

Karasev, V.V. ; Ivanova, N.A. ; Sadykova, A.R. et al. / Formation of charged soot aggregates by combustion and pyrolysis: charge distribution and photophoresis. In: Journal of Aerosol Science. 2004 ; Vol. 35, No. 3. pp. 363-381.

BibTeX

@article{87ecd6b7bd344c33a740b7cdd50f08f2,
title = "Formation of charged soot aggregates by combustion and pyrolysis: charge distribution and photophoresis",
abstract = "Soot aggregates formed by propane combustion in a diffusion flame and benzene pyrolysis in a flow reactor are studied by a microscopic video system (at standard temperature and pressure) and transmission electron microscope. The radius of soot aggregates is in the range 0.1-1.0 μm. The size of primary particles in aggregates is 10-30 nm for the combustion aggregates and 40-200 nm for the pyrolysis aggregates. By video observations of aggregate movement in the electric field it is determined that soot aggregates are charged. The typical aggregate charge is a few elementary units. The soot charge distribution is roughly bipolar and symmetric. This charge distribution is governed by the Boltzmann law with the charging equivalent diameter d E being larger than the aggregate mean mobility diameter by a factor of 1.4, 3.0 and 1.8 for soots sampled from the flame axis, region over the flame and from the flow reactor, respectively. Photophoretic movement of soot aggregates driven by a helium-neon laser beam (3 W/cm2) is observed by the video system. The aggregate photophoretic velocity is determined to be increasing from 15 to 160 μm/s with the equivalent radius increasing from 0. 1 to 2.9 μm. Estimations of the sun photophoretic velocity V PhSun (in the Earth's atmosphere at ground level) indicate that it is about 20% of the settling velocity for the range of aggregate radii studied in this work. The velocities of soot aggregate photophoresis in the Earth thermal irradiation were estimated to be negligible with regard to the settling velocity.",
author = "V.V. Karasev and N.A. Ivanova and A.R. Sadykova and N. Kukhareva and A.M. Baklanov and A.A. Onischuk and F.D. Kovalev and S.A. Beresnev",
note = "The authors would like to gratefully acknowledge the financial supports provided by INTAS foundation ( Grant 2000-00460 ), Russian Foundation for Basic Research ( project 01-03-32390 ), and grant of ISTC No. 2358.",
year = "2004",
month = mar,
day = "1",
doi = "10.1016/j.jaerosci.2003.10.006",
language = "English",
volume = "35",
pages = "363--381",
journal = "Journal of Aerosol Science",
issn = "0021-8502",
publisher = "Elsevier",
number = "3",

}

RIS

TY - JOUR

T1 - Formation of charged soot aggregates by combustion and pyrolysis: charge distribution and photophoresis

AU - Karasev, V.V.

AU - Ivanova, N.A.

AU - Sadykova, A.R.

AU - Kukhareva, N.

AU - Baklanov, A.M.

AU - Onischuk, A.A.

AU - Kovalev, F.D.

AU - Beresnev, S.A.

N1 - The authors would like to gratefully acknowledge the financial supports provided by INTAS foundation ( Grant 2000-00460 ), Russian Foundation for Basic Research ( project 01-03-32390 ), and grant of ISTC No. 2358.

PY - 2004/3/1

Y1 - 2004/3/1

N2 - Soot aggregates formed by propane combustion in a diffusion flame and benzene pyrolysis in a flow reactor are studied by a microscopic video system (at standard temperature and pressure) and transmission electron microscope. The radius of soot aggregates is in the range 0.1-1.0 μm. The size of primary particles in aggregates is 10-30 nm for the combustion aggregates and 40-200 nm for the pyrolysis aggregates. By video observations of aggregate movement in the electric field it is determined that soot aggregates are charged. The typical aggregate charge is a few elementary units. The soot charge distribution is roughly bipolar and symmetric. This charge distribution is governed by the Boltzmann law with the charging equivalent diameter d E being larger than the aggregate mean mobility diameter by a factor of 1.4, 3.0 and 1.8 for soots sampled from the flame axis, region over the flame and from the flow reactor, respectively. Photophoretic movement of soot aggregates driven by a helium-neon laser beam (3 W/cm2) is observed by the video system. The aggregate photophoretic velocity is determined to be increasing from 15 to 160 μm/s with the equivalent radius increasing from 0. 1 to 2.9 μm. Estimations of the sun photophoretic velocity V PhSun (in the Earth's atmosphere at ground level) indicate that it is about 20% of the settling velocity for the range of aggregate radii studied in this work. The velocities of soot aggregate photophoresis in the Earth thermal irradiation were estimated to be negligible with regard to the settling velocity.

AB - Soot aggregates formed by propane combustion in a diffusion flame and benzene pyrolysis in a flow reactor are studied by a microscopic video system (at standard temperature and pressure) and transmission electron microscope. The radius of soot aggregates is in the range 0.1-1.0 μm. The size of primary particles in aggregates is 10-30 nm for the combustion aggregates and 40-200 nm for the pyrolysis aggregates. By video observations of aggregate movement in the electric field it is determined that soot aggregates are charged. The typical aggregate charge is a few elementary units. The soot charge distribution is roughly bipolar and symmetric. This charge distribution is governed by the Boltzmann law with the charging equivalent diameter d E being larger than the aggregate mean mobility diameter by a factor of 1.4, 3.0 and 1.8 for soots sampled from the flame axis, region over the flame and from the flow reactor, respectively. Photophoretic movement of soot aggregates driven by a helium-neon laser beam (3 W/cm2) is observed by the video system. The aggregate photophoretic velocity is determined to be increasing from 15 to 160 μm/s with the equivalent radius increasing from 0. 1 to 2.9 μm. Estimations of the sun photophoretic velocity V PhSun (in the Earth's atmosphere at ground level) indicate that it is about 20% of the settling velocity for the range of aggregate radii studied in this work. The velocities of soot aggregate photophoresis in the Earth thermal irradiation were estimated to be negligible with regard to the settling velocity.

UR - https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=tsmetrics&SrcApp=tsm_test&DestApp=WOS_CPL&DestLinkType=FullRecord&KeyUT=000220546900006

UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=1442323795

U2 - 10.1016/j.jaerosci.2003.10.006

DO - 10.1016/j.jaerosci.2003.10.006

M3 - Article

VL - 35

SP - 363

EP - 381

JO - Journal of Aerosol Science

JF - Journal of Aerosol Science

SN - 0021-8502

IS - 3

ER -

ID: 43719663