2009
DOI: 10.1016/j.jcat.2009.03.012
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Adsorption and reactivity of nitrogen oxides (NO2, NO, N2O) on Fe–zeolites

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Cited by 146 publications
(129 citation statements)
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“…The first approach was based on the idea of increasing the fraction of protruding Cr centres able to initiate ethylene polymerization at room temperature. N 2 O was chosen as a promoter because of its potential in releasing a single oxygen atom, following the path N 2 O → N 2 + O ads (Panov et al 1990;Li & Armor 1992;Yuzaki et al 1998;Rivallan et al 2009;Zecchina et al 2010), with the formation of protruding mono-oxo Cr IV species (species 3 in figure 2). This hypothesis was inspired by the well-known effect of dioxygen, which is able to extract the Cr ions from the original position through the formation of surface chromates (species 1 in figure 2).…”
Section: (C) Engineering Of the Ligand Sphere By Means Of Activatorsmentioning
confidence: 99%
“…The first approach was based on the idea of increasing the fraction of protruding Cr centres able to initiate ethylene polymerization at room temperature. N 2 O was chosen as a promoter because of its potential in releasing a single oxygen atom, following the path N 2 O → N 2 + O ads (Panov et al 1990;Li & Armor 1992;Yuzaki et al 1998;Rivallan et al 2009;Zecchina et al 2010), with the formation of protruding mono-oxo Cr IV species (species 3 in figure 2). This hypothesis was inspired by the well-known effect of dioxygen, which is able to extract the Cr ions from the original position through the formation of surface chromates (species 1 in figure 2).…”
Section: (C) Engineering Of the Ligand Sphere By Means Of Activatorsmentioning
confidence: 99%
“…These studies were started from the fact that Fe-exchanged zeolites, representatively Fe-ZSM-5, are a commercially proven catalyst not only for the NH 3 -SCR reaction but also for direct N 2 O decomposition; thereby, the decomposition of N 2 O produced in the SCR reaction into N 2 on Fe ions and/or its reduction by residual NH 3 species [20][21][22][23] is expected, and from that a nanosized iron oxide, γ-Fe 2 O 3 (maghemite), is active for the NH 3 -SCR reaction, although N 2 O production levels were not addressed for this system [24]. The Fe-ZSM-5-coated V 2 O 5 -WO 3 /TiO 2 catalysts could greatly depress the formation of N 2 O in NH 3 -SCR reaction, depending on the coating content [16], unlike the series configuration systems [17].…”
Section: Introductionmentioning
confidence: 99%
“…[5,[7][8][9]. Generally, there is the agreement in the literature that N 2 O decomposes on the active metallic sites to N 2 and O-adatoms.…”
Section: Introductionmentioning
confidence: 85%