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Characterization of Zr6Nb2O17 synthesized by a peroxo route as a novel solid acid

Paper ID Volume ID Publish Year Pages File Format Full-Text
52271 46867 2008 6 PDF Available
Title
Characterization of Zr6Nb2O17 synthesized by a peroxo route as a novel solid acid
Abstract

The impregnation of hydrated zirconia at pH ∼0.5 with a solution of peroxoniobium(V) complex, [Nb2(O2)3]4+, ensuring a ZrO2:Nb2O5 mole ratio of 6:1 followed by calcination at 873 K resulted in the formation of a Zr6Nb2O17 solid solution. The structure of this compound was confirmed by XRD. The surface acidity was investigated by in situ FT-IR spectroscopy using 2,6-dimethylpyridine (lutidine). Zr6Nb2O17 has a sufficient amount of Brønsted acid sites necessary for the stabilization of dispersed Pd(II) species. The potential of the Pd-promoted Zr6Nb2O17 as a catalyst for the reduction of NO with methane was evaluated by studying the reactivity of adsorbed NOx species toward the hydrocarbon.

Keywords
Zr6Nb2O17; Synthesis from niobium(V) peroxo precursor; Surface acidity; Pd promotion; CH4-SCR mechanism
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Characterization of Zr6Nb2O17 synthesized by a peroxo route as a novel solid acid
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 5, 20 March 2008, Pages 874–879
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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