Abstract
Thermally induced reactions are of great importance in the manufacture and characterization of a very wide range of increasingly complex materials covering areas as diverse as ceramics and heterogeneous catalysts. Subsequently, there is a need for improved thermoanalytical methods that can provide enhanced resolution and a greater understanding of the energetics and mechanisms involved. This paper describes a new solid insertion probe mass spectrometer (SIP-MS) system that is designed to meet these needs by operating high vacuum with small sample masses. The SIP-MS system supports both conventional linear heating and a range of sample-controlled thermal analysis (SCTA) techniques including constant rate thermal analysis (CRTA). Its ability, in conjunction with the latter technique, to obtain reliable apparent activation energy measurements throughout a process under near-ideal experimental conditions is demonstrated. In addition, the system can discriminate between different reaction mechanisms and provide information on the often complex solid-state reactions found in calcination processes.
Original language | English |
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Pages (from-to) | 6944-6949 |
Number of pages | 6 |
Journal | Journal of Physical Chemistry B |
Volume | 103 |
Issue number | 33 |
DOIs | |
Publication status | Published - 19 Aug 1999 |