Role of Mn+ cations in the redox and oxygen transfer properties of BaMxAl12−xO19−δ (M = Mn, Fe, Co) nanomaterials for high temperature methane oxidation
作者： Said Laassiri , Nicolas Bion , Daniel Duprez , Houshang Alamdari , Sébastien Royer
DOI: 10.1039/C3CY00192J
关键词:
摘要: BaMxAl12−xO19−δ (M = Mn, Fe, Co, x 1, 2) hexaaluminate nanomaterials were successfully prepared using the ARS (Activated Reactive Synthesis) process, a top-down and solvent free original synthesis route. The crystal sizes of range at 24 ± 2 nm, which allows them to display high surface area (from 60 100 m2 g−1). role Mn+ cations in redox oxygen transfer properties was studied by H2-TPR 18O/16O isotopic exchange, respectively. nature transition metal as well its content is observed play key properties. catalytic nano-hexaaluminates, evaluated for methane oxidation, reaction involving severe conditions (high temperature), resulted from multiple factors including valence concentration on surface.
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