Journal
CATALYSIS TODAY
Volume 119, Issue 1-4, Pages 327-331Publisher
ELSEVIER
DOI: 10.1016/j.cattod.2006.08.060
Keywords
layered double hydroxides; hydrotalcite; manganese; mixed oxides; VOCs
Ask authors/readers for more resources
Mg/Mn/Al mixed oxide systems of similar atomic ratios close to 2/0.5/1 were obtained by calcination of Mg,Al layered double hydroxide (LDH) type precursors containing Mn either in the cationic form within the brucite layer or as permanganate anions in the interlayer. The materials were characterised with PXRD, thermal analysis, XPS, ESR, TPR and BET. In mixed oxides derived from interlayer-doped precursor PXRD identified MgO-MnO solid solution and poorly crystalline Al-rich spinet phase, while those obtained from la er-doped LDH contained a better crystalline Mn-rich spinet. Sur-face of both materials was covered with poorly crystalline and/or amorphous Mn4+-containing phases. Higher reducibility of this surface coat in calcined layer-doped catalyst, as compared to interlayer-doped one, was attributed to the differences in the nature of underlying crystalline phases, and was considered the chief reason for the higher catalytic activity of this catalyst in the total oxidation of toluene. (c) 2006 Elsevier B.V All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available