Mechanism of the oxygen-stimulated deactivation of RuyTi1−y-oxide overlayers on Ti studied by XPS, SEM and electrochemical techniques
✍ Scribed by Dr. sc. N. Wagner; Dr. L. Kühnemund
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- English
- Weight
- 593 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0232-1300
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✦ Synopsis
Mechanism
of the Oxygen-stimulated Deactivation of RuyTil-y-Oxide Overlayers on Ti Studied by XPS, SEM and Electro chemical Te ehniques By means of wet oxygen exposure the stability o f RTO anodes has been observed. The deactivation is due to ruthenium loss via unstablc liiglier surface oxides in a long time reginre. A s follows after uneffective subsurface annealing procedure the catalytic durability is reduccd drastically by erosion stiinulated increasing ruthenium loss of inlroniogeneous active layer surfaces. Mit Hilfe eincr Saucrstoffbelastirng wird dio Stabilitat von RTO Anoden untersucht. Die Langzeitstabilitiit ist gekoppelt rriit einem Rutlreniunivcrlust iiber instabile hohero Oberflachenoxitle. Nach eincui uneffcktiven Ternperregime ist die Stabilitat deutlich geringer, weil die inliomogeneri Aktivschichten durch Erosion verstiirkt an Ruthenium vwar rri e 11.