Characterization and catalytic investigation of NO + CO reaction on perovskites of the general formula LaxM1 − xFeO3 (M = Sr and/or Ce) prepared via a reverse micelles microemulsion route
作者： A.E. Giannakas , A.A. Leontiou , A.K. Ladavos , P.J. Pomonis
DOI: 10.1016/J.APCATA.2006.05.016
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摘要: Abstract Four different perovskite type solids with nominal composition LaFeO 3 (LFOr), La 0.85 Sr 0.15 FeO (LSFOr), 0.8 0.1 Ce (LSCFOr) and 0.2 (LCFOr) were prepared via a reverse micelles microemulsion route. The aim of this work was to investigate the effect doping in structural properties, surface area catalytic properties final comparison undoped reference solid . system which used is composed cetyl-trimethyl-ammonium-bromide (CTAB), 1-butanol, n -octane nitrate salts metals. XRD measurements combined Rietveld analysis helped us identify % quantity phases formed. Scanning electron microscopy (SEM) images showed that obtained consist nanoparticles range 20–80 nm. BET experiments achieve much higher specific (ssa) (30–61 m 2 /g) than similar have been by other methods. Catalytic tests NO + CO reaction made use gases He/NO/CO ratio 96/2/2 total flow rate 100 cm /min. full sequence activity tested LCFOr > LSCFOr > LSFOr ≥ LFOr agreement increment ssa solids.
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