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Production of ultrafine metal oxide aerosol particles by thermal decomposition of metal alkoxide vapors

Okuyama, Kikuo and Kousaka, Yasuo and Tohge, Noboru and Yamamoto, Satoru and Wu, Jin Jwang and Flagan, R. C. and Seinfeld, J. H. (1986) Production of ultrafine metal oxide aerosol particles by thermal decomposition of metal alkoxide vapors. AIChE Journal, 32 (12). pp. 2010-2019. ISSN 0001-1541. https://resolver.caltech.edu/CaltechAUTHORS:20150630-165604475

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Abstract

Ultrafine spherical titanium, silicon, and aluminium oxide particles were prepared by the thermal decomposition of their alkoxide vapors, produced by evaporation and subsequent heating. High-concentration ultrafine particles having geometric mean diameters ranging between 0.01 and 0.06 µm and a geometric standard deviation of about 1.4 were obtained by varying the temperatures of the evaporator containing the liquid alkoxides and the reactor furnace, and the flow rate of carrier gas. For furnace temperatures lower than 400^oC for TiO, and 1000^oC for SiO_2 and Al_2O_3, the particles obtained were found to be amorphous. The observed changes in the particle size distributions due to changes in operating conditions were compared with those predicted theoretically by solving the discrete-continuous aerosol general dynamic equation accounting for coagulation and generation of monomer by thermal decomposition. The effect of monomer number concentration on the size distribution of generated particles was found to be qualitatively explained.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1002/aic.690321211DOIArticle
http://onlinelibrary.wiley.com/doi/10.1002/aic.690321211/abstractPublisherArticle
ORCID:
AuthorORCID
Flagan, R. C.0000-0001-5690-770X
Seinfeld, J. H.0000-0003-1344-4068
Additional Information:© 1986 American Institute of Chemical Engineers. Manuscript received Mar. 17, 1986.
Funders:
Funding AgencyGrant Number
Japan Society for the Promotion of Science (JSPS)60030039
Japan Society for the Promotion of Science (JSPS)60750876
NSFATM-8503103
Issue or Number:12
Record Number:CaltechAUTHORS:20150630-165604475
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150630-165604475
Official Citation:Okuyama, K., Kousaka, Y., Tohge, N., Yamamoto, S., Wu, J. J., Flagan, R. C. and Seinfeld, J. H. (1986), Production of ultrafine metal oxide aerosol particles by thermal decomposition of metal alkoxide vapors. AIChE J., 32: 2010–2019. doi: 10.1002/aic.690321211
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:58719
Collection:CaltechAUTHORS
Deposited By: Irina Meininger
Deposited On:08 Sep 2015 19:55
Last Modified:03 Oct 2019 08:39

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