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Aerosol analysis of residual and nanoparticle fractions from spray pyrolysis of poorly volatile precursors

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Aerosol analysis of residual and nanoparticle fractions from spray pyrolysis of poorly volatile precursors. / Harra, Juha; Kujanpää, Sonja; Haapanen, Janne; Juuti, Paxton; Mäkelä, Jyrki M.; Hyvärinen, Leo; Honkanen, Mari.

In: AIChE Journal, Vol. 63, No. 3, 2017, p. 881-892.

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@article{3cf92f656c0a4e1bb4e530f858061ae3,
title = "Aerosol analysis of residual and nanoparticle fractions from spray pyrolysis of poorly volatile precursors",
abstract = "The quality of aerosol-produced nanopowders can be impaired by micron-sized particles formed due to non-uniform process conditions. Methods to evaluate the quality reliably and fast, preferably on-line, are important at industrial scales. Here, aerosol analysis methods are used to determine the fractions of nanoparticles and micron-sized residuals from poorly volatile precursors. This is accomplished using aerosol instruments to measure the number and mass size distributions of Liquid Flame Spray-generated alumina and silver particles produced from metal nitrates dissolved in ethanol and 2-ethylhexanoic acid (EHA). The addition of EHA had no effect on silver, whereas, 5{\%} EHA concentration was enough to shift the alumina mass from the residuals to nanoparticles. The size-resolved aerosol analysis proved to be an effective method for determining the product quality. Moreover, the used on-line techniques alone can be used to evaluate the process output when producing nanopowders, reducing the need for tedious off-line analyses. {\circledC} 2016 American Institute of Chemical Engineers AIChE J, 2016",
keywords = "aerosol flame synthesis, particle-size distribution, gas-to-particle, droplet-to-particle, effective density",
author = "Juha Harra and Sonja Kujanp{\"a}{\"a} and Janne Haapanen and Paxton Juuti and M{\"a}kel{\"a}, {Jyrki M.} and Leo Hyv{\"a}rinen and Mari Honkanen",
year = "2017",
doi = "10.1002/aic.15449",
language = "English",
volume = "63",
pages = "881--892",
journal = "AIChE Journal",
issn = "0001-1541",
publisher = "Wiley",
number = "3",

}

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TY - JOUR

T1 - Aerosol analysis of residual and nanoparticle fractions from spray pyrolysis of poorly volatile precursors

AU - Harra, Juha

AU - Kujanpää, Sonja

AU - Haapanen, Janne

AU - Juuti, Paxton

AU - Mäkelä, Jyrki M.

AU - Hyvärinen, Leo

AU - Honkanen, Mari

PY - 2017

Y1 - 2017

N2 - The quality of aerosol-produced nanopowders can be impaired by micron-sized particles formed due to non-uniform process conditions. Methods to evaluate the quality reliably and fast, preferably on-line, are important at industrial scales. Here, aerosol analysis methods are used to determine the fractions of nanoparticles and micron-sized residuals from poorly volatile precursors. This is accomplished using aerosol instruments to measure the number and mass size distributions of Liquid Flame Spray-generated alumina and silver particles produced from metal nitrates dissolved in ethanol and 2-ethylhexanoic acid (EHA). The addition of EHA had no effect on silver, whereas, 5% EHA concentration was enough to shift the alumina mass from the residuals to nanoparticles. The size-resolved aerosol analysis proved to be an effective method for determining the product quality. Moreover, the used on-line techniques alone can be used to evaluate the process output when producing nanopowders, reducing the need for tedious off-line analyses. © 2016 American Institute of Chemical Engineers AIChE J, 2016

AB - The quality of aerosol-produced nanopowders can be impaired by micron-sized particles formed due to non-uniform process conditions. Methods to evaluate the quality reliably and fast, preferably on-line, are important at industrial scales. Here, aerosol analysis methods are used to determine the fractions of nanoparticles and micron-sized residuals from poorly volatile precursors. This is accomplished using aerosol instruments to measure the number and mass size distributions of Liquid Flame Spray-generated alumina and silver particles produced from metal nitrates dissolved in ethanol and 2-ethylhexanoic acid (EHA). The addition of EHA had no effect on silver, whereas, 5% EHA concentration was enough to shift the alumina mass from the residuals to nanoparticles. The size-resolved aerosol analysis proved to be an effective method for determining the product quality. Moreover, the used on-line techniques alone can be used to evaluate the process output when producing nanopowders, reducing the need for tedious off-line analyses. © 2016 American Institute of Chemical Engineers AIChE J, 2016

KW - aerosol flame synthesis, particle-size distribution, gas-to-particle, droplet-to-particle, effective density

U2 - 10.1002/aic.15449

DO - 10.1002/aic.15449

M3 - Article

VL - 63

SP - 881

EP - 892

JO - AIChE Journal

JF - AIChE Journal

SN - 0001-1541

IS - 3

ER -