con interaction between thermoanalytical and mass spectrometric curves measured in combined thermoanalyser-mass spectrometer systems

B. Roduit , Jerzy Robert Bałdyga , M. Maciejewski , A. Baiker

Abstract

The convective and diffusional mass transfer occurring in combined thermoanalyser-mass spectrometer systems can cause significant deviation between measured thermoanalytical and mass spectrometric curves. Based on experimental studies of the decomposition of CaCO3, a model has been developed which allows to interrelate the thermoanalytical (DTG) and mass spectrometric curves and provides a criterion defining under which conditions (carrier gas-flow rate and diffusivity of evolved gas) the disguising mass-transfer influences can be neglected. The criterion relates the total residence time τtot of the gas in the experimental system to the characteristic time tN of the gravimetrically recorded decomposition process and allows to quantify the agreement between the thermoanalytical and mass spectrometric curves.
Author B. Roduit
B. Roduit,,
-
, Jerzy Robert Bałdyga (FCPE / DCRED)
Jerzy Robert Bałdyga,,
- Department of Chemical Reactor Engineering and Dynamics
, M. Maciejewski
M. Maciejewski,,
-
, A. Baiker
A. Baiker,,
-
Journal seriesThermochimica Acta, ISSN 0040-6031
Issue year1997
Vol295
No1-2
Pages59-71
Publication size in sheets0.6
Keywords in Englishinfluence of mass transfer on TA-MS signals, thermal analysis coupled with mass spectrometry
ASJC Classification1606 Physical and Theoretical Chemistry; 3104 Condensed Matter Physics; 3105 Instrumentation
DOIDOI:10.1016/S0040-6031(97)00101-9
URL http://ac.els-cdn.com/S0040603197001019/1-s2.0-S0040603197001019-main.pdf?_tid=85bd2dea-dd7f-11e6-ac61-00000aacb35f&acdnat=1484745225_90abaae7d1ce5d150caa7723ae1210de
Languageen angielski
File
Roduit B. (i in.) - Influence of mass transfer....pdf 650.51 KB
Score (nominal)25
Publication indicators WoS Citations = 23; Scopus SNIP (Source Normalised Impact per Paper): 1999 = 0.959; WoS Impact Factor: 2006 = 1.417 (2) - 2007=1.557 (5)
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