Effect of ZnO Addition on Cobalt–Alumina Interaction Species

Autor:	Toshinori Adachi, Yasuaki Okamoto, Toshinobu Imanaka, Akinori Maezawa
Rok vydání:	1991
Předmět:	chemistry X-ray photoelectron spectroscopy Chemical engineering Phase (matter) chemistry.chemical_element Mixed oxide General Chemistry Dispersion (chemistry) Cobalt
Zdroj:	Bulletin of the Chemical Society of Japan. 64:236-242
ISSN:	1348-0634 0009-2673
Popis:	The effect of ZnO addition on cobalt–alumina interaction modes was studied using TPR and XPS. It was found that the addition of 2 wt% ZnO markedly affects the distribution of the cobalt species in CoO/Al2O3 (5 wt% CoO): cobalt–alumina surface interaction species are removed and migration of cobalt into an alumina subsurface phase is promoted by ZnO. A formation of Co–Zn–O mixed oxide is proposed for ZnO–CoO/Al2O2O3 at high ZnO content. The dispersion and distribution of ZnO on Al2O3 are also strongly modified by the presence of cobalt.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ecb49c57602fe96bb5c1815e31c4490a https://doi.org/10.1246/bcsj.64.236 Zobrazit plný text záznamu