Size Effects in the Sequential Oxidation–Reduction of Co Nanoparticles in the Co/SiO2 Catalystстатья
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Дата последнего поиска статьи во внешних источниках: 2 апреля 2015 г.
Аннотация:The size effects during the oxidation–reduction treatment (ORT) of Co nanoparticles in the
Co/SiO2 catalyst were studied. The results of ORT on Co nanoparticles depended on the initial size distribu
tion of nanoparticles; for small nanoparticles, ORT did not lead to further decrease in size. (The threshold
size was obviously less than 10–15 nm.) The critical size of Co particles depended on the conditions of oxi
dation and reduction, i.e., the heating rate, the composition of the gas mixture, etc.