Simultaneous oxidation of aromatic compounds using Sr-doped lanthanum manganites as catalysts (CROSBI ID 308629)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Žužić, Andreja ; Car, Filip ; Macan, Jelena ; Tomašić, Vesna ; Gajović, Andreja
engleski
Simultaneous oxidation of aromatic compounds using Sr-doped lanthanum manganites as catalysts
Strontium-doped lanthanum manganites, La1-xSrxMnO3 (LSMO), are promising and affordable catalysts for oxidative degradation of volatile organic compounds. LSMO catalysts (x = 0, .1, .2, and .3) were prepared by the citrate-nitrate autocombustion (CNA) and coprecipitation synthesis. The phase composition was confirmed by X- ray diffraction and Rietveld refinement analysis, while the oxygen content was determined by Mohr’s salt permanganate titration. Morphology and porosity of prepared catalysts was correlated to catalytic oxidation of benzene, toluene, ethylbenzene and o-xylene. It was observed that both synthesis methods yielded catalysts of similar average pore size diameter and specific surface area, but the pore size distribution differed: CNA-prepared catalysts had a multimodal pore size distribution, while the coprecipitated ones had a single maximum at 4 nm. Catalysts prepared by the CNA method have shown a higher catalytic activity in the temperature range 373– 723 K, as the presence of Mn3+/Mn4+ mixed valences increased their reducibility.
autocombustion synthesis ; catalytic oxidation ; coprecipitation ; doped lanthanum manganites ; volatile organic compounds
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Podaci o izdanju
19 (5)
2022.
2891-2904
objavljeno
1546-542X
1744-7402
10.1111/ijac.14068