Science and Technology Production
Thermal decomposition of supported lithium nitrate catalysts.
Articulo
Authorship:
María Lucía Ruiz ; LICK, ILEANA DANIELA ; Marta I. Ponzi ; Enrique Rodriguez Castellón ; Antonio Jimenez Lopez ; Esther N. PonziDate:
2010Publishing House and Editing Place:
ElsevierMagazine:
THERMOCHIMICA ACTA, vol. 499 (pp. 21-26) ElsevierSummary *
New catalysts for soot combustion were prepared by impregnation of different supports (SiO2, ZrO2 and ZrO2.nH2O) with a LiNO3 solution and then characterized by means of FTIR, XPS, TGA and UV-vis spectroscopy, whereby the presence of lithium nitrate in the prepared catalysts was identified and quantified. The soot combustion rate using this series of catalysts (LiNO3/support) was compared with the activity of a series of impregnated catalysts prepared using LiOH (Li2O/supports). Catalysts prepared using LiNO3 are found to be more active than those prepared using LiOH. The catalytic performance was also studied with a NO/O2 mixture in the feed demonstrating that NO increases the combustion rate of soot, probably as a consequence of lithium oxide forming an “in situ”nitrate ion. Information provided by the agent in SIGEVAKey Words
soot combustionlithium nitratezirconiasilica