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Quantification of flow hydrodynamics in pulse thermogravimetric analysis systems
Author(s) -
Dadyburjor D. B.,
Dean J. W.
Publication year - 1987
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690331109
Subject(s) - thermogravimetric analysis , microreactor , flow (mathematics) , pulse (music) , materials science , zeolite , mass fraction , volumetric flow rate , analytical chemistry (journal) , mechanics , chemistry , chemical engineering , catalysis , chromatography , physics , engineering , organic chemistry , composite material , optics , detector
A test has been designed and used to compare flow hydrodynamics in different thermogravimetric analysis (TGA) systems used as pulse microreactors. The test involves passing a pulse of injectant over the sample pan containing an adsorbent. Water and zeolite are used in the present case. The technique is easily performed and is insensitive to variations in temperature. A model is developed by which the fraction of gas pulse bypassing the sample pan within the TGA can be obtained. In gas/solid reactions, either catalytic or noncatalytic, the test should prove useful for comparing TGA extent‐of‐conversion data to similar measurements taken from other reactor configurations, carrier flow rates, and flow geometries.