Will S (2002)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2002
Publisher: Wiley-VCH Verlag
Book Volume: 74
Pages Range: 551-552
Journal Issue: 5
DOI: 10.1002/1522-2640(200205)74:5<551::AID-CITE551>3.0.CO;2-B
In a joint project the usefulness of the TIRE-LII was studied for on-line measurement of primary particle size in production processes. The characterization of industrial soot with respect to its primary particle size is of decisive significance for process control. TIRE-LII has already achieved success in basic studies on soot formation in simple combustion processes and in a commercial sensor for exhaust gas measurement. The basic principle of LII is the heating of the nanoparticle with a short laser pulse and a subsequent analysis of the black body radiation. From modeling the process the time course of the detected radiation can be calculated as a function of the primary particle size. The cooling rate of the particle is proportional to the specific surface that can be measured by the time resolved measurement of the LII signal. The experimental signal is grasped with a photomultiplier and compared with model calculations of the primary particle size. Preliminary studies in a measuring chamber of dispersed particles with different primary particle diameter supplied a good correlation of LII results with transmission electron microscopy (TEM) analyses. The technique was applied to production reactors with the primary particle size of industrial soot successfully measured on line and in situ. In parameter variations a correlation between LII measured primary particle size and conventional laboratory analyses determined CTAB (hexadecyltrimethylammoniumbromide)-absorption number, that characterized the specific surface was found. The correlation between particle size by LII and by the CTAB absorption number was linear. The LII results were independent of the aggregate structure. The LII system is simple and robust in use and because of rapid detection frequency of at least 1 Hz is a good tool for process control.
APA:
Will, S. (2002). Nanotechnology. On-line characterization of industrial soot with TIme REsolved Laser Induced Incandescence (TIRE-LII) technology. Chemie Ingenieur Technik, 74(5), 551-552. https://doi.org/10.1002/1522-2640(200205)74:5<551::AID-CITE551>3.0.CO;2-B
MLA:
Will, Stefan. "Nanotechnology. On-line characterization of industrial soot with TIme REsolved Laser Induced Incandescence (TIRE-LII) technology." Chemie Ingenieur Technik 74.5 (2002): 551-552.
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