1979
DOI: 10.1002/chin.197909024
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ChemInform Abstract: STUDY OF METAL OXIDE CATALYSTS BY TEMPERATURE PROGRAMMED DESORPTION. 4. OXYGEN ADSORPTION ON VARIOUS METAL OXIDES

Abstract: Aufgrund ihrer Sauerstoffadsorptionseigenschaften lassen sich die 16 untersuchten Metalloxide in 3 Klassen einteilen: A) V3O5, MoO3, Bi2O3, WO3 und Bi2O3 · 2 MoO3, die im Temp.‐Bereich 10‐560°C keine Sauerstoffdesorption zeigen; B) Cr3O3, MnO2, Fe3O3, Co3O4, NiO und CuO2 die unabhängig von der Präadsorptionsprozedur durchweg große Mengen an Sauerstoff desorbieren; C) TiO2, ZnO2 SnO3, Al2O3 und SiO3 (eine Ausnahme bilden die letzten beiden Oxide), bei denen zwischen 10 und 400°C nur dann Sauerstoff desorbiert w… Show more

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“…The higher sensitivity of CuO/ZnO composite can be attributed to the electronic sensitization induced by CuO [50,51]. There are more active sites and more chemisorbed oxygen species on the surface of p-type semiconductors than n-type semiconductors [51,52]. The modified CuO nanostructures can act as a strong acceptor of electrons from ZnO [50].…”
Section: Discussion Of Sensing Mechanismmentioning
confidence: 99%
“…The higher sensitivity of CuO/ZnO composite can be attributed to the electronic sensitization induced by CuO [50,51]. There are more active sites and more chemisorbed oxygen species on the surface of p-type semiconductors than n-type semiconductors [51,52]. The modified CuO nanostructures can act as a strong acceptor of electrons from ZnO [50].…”
Section: Discussion Of Sensing Mechanismmentioning
confidence: 99%