Effect of oxygen vacancies on direct N2O decomposition over ZrO2-Y2O3 catalysts

Autor:	Chang-Min Cho, Naoyoshi Nunotani, Nobuhito Imanaka
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	catalyst direct nitrous oxide decomposition oxygen vacancy fluorite-type structure c-type structure Clay industries. Ceramics. Glass TP785-869
Zdroj:	Journal of Asian Ceramic Societies, Vol 7, Iss 4, Pp 518-523 (2019)
Druh dokumentu:	article
ISSN:	2187-0764 21870764
DOI:	10.1080/21870764.2019.1675941
Popis:	The effect of oxygen vacancies on catalytic activity for direct N2O decomposition was demonstrated in Zr1−xYxO2−δ solid solutions with a fluorite-related structure. The fluorite-type structure was formed as samples with a small amount of Y3+ (0.05 ≤ x ≤ 0.19) and a large amount of Y3+ (x ≥ 0.80), leading to the generation of a C-type structure derived from the fluorite-type structure by removing a quarter of the oxide anions. The oxygen vacancies worked as N2O adsorption sites and catalytic active sites, with the highest activity realized by the YO1.5 catalyst with a C-type structure, which contained the largest number of oxygen vacancies in the ZrO2-Y2O3 system.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/4b6c495e309e4aa6af96bc6b75730234 Zobrazit plný text záznamu View record in DOAJ