Oxygen species, activated

In order to have more infoimation on the nature of the oxygen species active in partial and total oxidation we investigated the interaction of the hydrocarbons with the pre-oxidized surfaces of oxides where different types of surface oxygen species are formed. In particular we investigated p-type semiconductors like chromia, chromites and cobalt oxide C03O4. Moreover, we studied n-type metal oxides like FezOs, metal ferrites and CuObased catalysts. 

Bonello S, Zahringer C, BelAiba RS, et al. (2007) Reactive oxygen species activate the HIF-lalpha promoter via a functional NFkappaB site. Arterioscler Thromb Vase Biol 27 755-761... 

Castillo, S. S., Levy, M., Thaikoottathil, J. V., and Goldkorn, T. Reactive nitrogen and oxygen species activate different sphingomyelinases to induce apoptosis in airway epithelial cells. Exp Cell Res 313 (2007) 2680-2686. 

Ura et al. [35] also reported that the partial substitution of strontium by potassium in Sri J< ,Ti03 perovskites improves the catalytic combustion of soot in N0 /02 mixtures with soot-catalysts mixtures prepared in loose contact. It was observed that potassium favors the creation of oxygen vacancies on the perov-sldte surface where molecular oxygen or NO are adsorbed forming basic surface oxygen species active for soot oxidation. In this line, it was confirmed that potassium substitution into the perovskite framework is more effective than a potassium salt impregnation [36]. 

Chen, T., Pal, A., Jehng, J., et al. (2011). Identification of Oxygen Species Active in Ethylene Epoxidation on Silver Catalysts with Raman Spectroscopy and DPT Calculations, Presentation 144 FUEL Division, 241st ACS National Meeting, Anaheim CA. 

Pociask DA, Sime PJ, Brody AR. Asbestos-derived reactive oxygen species activate TGF-betal. Lab Invest 2004 84(8) 1013-1023. 

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