Preparation and characterisation of calcined Mg/Al hydrotalcites impregnated with alkaline nitrate and their activities in the combustion of particulate matter

The effect of incorporating alkaline nitrates in hydrotalcites for use in the combustion of particulate matter from diesel emissions has been studied. The catalysts were characterised by X-ray diffraction (XRD), N2 adsorption, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS...

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Bibliographic Details
Published in:Applied clay science 2013-08, Vol.80-81, p.426-432
Main Authors: Comelli, Nora A., Ruiz, María L., Merino, Nora A., Lick, Ileana D., Rodríguez-Castellón, E., Jiménez-López, A., Ponzi, Marta I.
Format: Article
Language:English
Subjects:
Alkaline nitrates
Earth sciences
Earth, ocean, space
Exact sciences and technology
Hydrotalcite
Mineralogy
Silicates
Soot combustion
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Summary:The effect of incorporating alkaline nitrates in hydrotalcites for use in the combustion of particulate matter from diesel emissions has been studied. The catalysts were characterised by X-ray diffraction (XRD), N2 adsorption, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), elemental analysis (EA), atomic absorption spectrophotometry (AAS) temperature programmed reduction (TPR) and Fourier transform infrared spectroscopy (FTIR). Activity measurements were carried out using a thermobalance in air and using a fixed-bed reactor with a NO/O2 flow. The observed activities decreased in the following order: HTMgAlcCs>HTMgAlcK>HTMgAlcLi>HTMgAlc. [Display omitted]
ISSN:0169-1317
1872-9053
DOI:10.1016/j.clay.2013.05.013