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Growth of zirconia particles made by flame spray pyrolysis

✍ Scribed by Roger Mueller; Rainer Jossen; Hendrik K. Kammler; Sotiris E. Pratsinis; M. Kamal Akhtar

Publisher: American Institute of Chemical Engineers
Year: 2004
Tongue: English
Weight: 282 KB
Volume: 50
Category: Article
ISSN: 0001-1541
DOI: 10.1002/aic.10272

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✦ Synopsis

Abstract

The growth of ZrO~2~ particles in spray flames is studied at production rates of 100 and 300 g/h by thermophoretic sampling (TS) and image analysis of transmission electron microscope (TEM) micrographs. At each TS location, the corresponding temperature of the particle‐laden spray flame is measured along the centerline by Fourier transform infrared (FTIR) spectroscopy. The product powder is analyzed by nitrogen adsorption and TEM. The measured evolution of primary particle size distribution is presented and quantitatively explained, accounting for aerosol coagulation and sintering. The evolution of the average agglomerate size and number of primary particles per agglomerate is calculated and compared to TEM micrographs. © 2004 American Institute of Chemical Engineers AIChE J, 50: 3085–3094, 2004

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