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La/Sr-based perovskites as soot oxidation catalysts for Gasoline Particulate Filters

“…Powders of lanthanum-strontium manganite, La 0.6 Sr 0.4 MnO 3 (LSM), and lanthanum-strontium ferrite, La 0.6 Sr 0.4 FeO 3 (LSF), were prepared by a complex route from the thermal decomposition of the chelated nitrate precursors [12,13]. The following reagents were used: La(NO 3 …”

The organic residue and synthesis of LaFeO3 by combustion of citrate and nitrate precursors

“…With the advent of solute chemistry, there are various routes to synthesize materials at low temperatures with smaller particle size. Various low temperature methods being employed to develop LaFeO 3 include solegel method [17e20], precipitation method [21,22], autocombustion method [23e25], hot soap method [26], hydrothermal method [27], sonochemical method [28], emulsion precursors method [29], polymerizable complex method [30] and thermal decomposition of LaFe(CN) 6 .5H 2 O [31]. The autocombustion method is advantageous for a high local temperature promoting the reaction between the reactant metals to form the desired phase during ignition.…”

Synthesis and characterisation of La1−xSrxCoO3 with large surface area

“…To improve the catalytic activity of La 1 À x Sr x CoO 3 , the powders must be synthesised with good surface crystallinity (regularity of ions) and large surface area values. Recently, intensive attention has been devoted to novel wet chemical routes to obtain nanopowders or thin films in the LaMO 3 (M = Co, Mn, Cr, Fe, Ni) systems [9][10][11][12].…”