1998
DOI: 10.1016/s0167-2738(98)00201-x
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The low temperature limit of the application of solid electrolyte potentiometry in heterogeneous catalysis

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Cited by 15 publications
(6 citation statements)
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“…During this experiment, the Pt catalyst was heated from 250 to 450 jC and then cooled down to 250 jC at 0.5 jC/min. As already observed by Brück et al [21], no stable values of the potential were obtained below 250 jC. At temperatures higher than 400 jC, equilibrium was established whatever the operating conditions.…”
Section: Potentiometric Measurementssupporting
confidence: 69%
“…During this experiment, the Pt catalyst was heated from 250 to 450 jC and then cooled down to 250 jC at 0.5 jC/min. As already observed by Brück et al [21], no stable values of the potential were obtained below 250 jC. At temperatures higher than 400 jC, equilibrium was established whatever the operating conditions.…”
Section: Potentiometric Measurementssupporting
confidence: 69%
“…The lower temperature limit, for the use of solid electrolyte cells under equilibrium conditions with the system Pt/YSZ, has been determined at around 250 ~ by comparing experimental values of VWRo, with those calculated from the Nernst equation [16].…”
Section: Introductionmentioning
confidence: 99%
“…However, in order to deal with catalytic study demands, J. Brtick et al [16] Ionics 11 (2005) was applied between the top of YSZ and quartz tubes in order to insure the sealing. This end part of the reactor was out of the oven.…”
Section: Introductionmentioning
confidence: 99%
“…zwangsläufig mit Polarisierungserscheinungen und somit einer Verfälschung der Messergebnisse zu rechnen ist. Dies ist vielmehr eine Frage der Höhe der Austauschstromdichten bei der Messung[13], und in dem für die vorliegende Untersuchung interessierenden Temp.-Bereich von 340 bis 3608 sind keine störenden Einflüsse zu erwarten[14].Zusätzlich zu den Festkörperelektrolytzellen wurden Schalenkontakte hergestellt, um unabhängig von der Messelektrode die Katalysatormenge im System variieren zu können. Die als Träger verwendeten Steatitkugeln (f 3 mm) wurden mit der gleichen Suspension wie bei der Elektrodenpräparation behandelt und auf gleiche Weise kalziniert.…”
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