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. © 2016 American Institute of Chemical Engineers AIChE J, 2016
Original language | English |
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Pages (from-to) | 881-892 |
Number of pages | 12 |
Journal | AIChE Journal |
Volume | 63 |
Issue number | 3 |
Early online date | 29 Aug 2016 |
DOIs | |
Publication status | Published - 2017 |
Publication type | A1 Journal article-refereed |
Keywords
- aerosol flame synthesis, particle-size distribution, gas-to-particle, droplet-to-particle, effective density
Publication forum classification
- Publication forum level 2