N2O decomposition over iron-exchanged mordenite

Leglise, J.

doi:10.1016/0021-9517(84)90384-1

Cited by 105 publications

(49 citation statements)

References 11 publications

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“…Only after completing the reoxidation, steady state N 2 O decomposition set in, yielding N 2 and O 2 in the stoichiometric ratio of 2:1. The same phenomenon was already reported by the group of Hall [18]. After pretreatment in 2000 ppm O 2 , the peak of N 2 was significantly smaller.…”

Section: Oxidative or Reductive Pretreatmentsupporting

confidence: 77%

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A look into the surface chemistry of N2O decomposition on iron zeolites by transient response experiments

Pirngruber

Roy

2005

Catalysis Today

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Section: Oxidative or Reductive Pretreatmentsupporting

confidence: 77%

“…(2). Reaction (2) was also favored by many authors because of the observation that the presence of O 2 in the gas phase does not strongly inhibit N 2 O decomposition over Fe-ZSM-5 [16,18,19]. Such an inhibition would be expected if oxygen was formed according to Eq.…”

Section: Introductionmentioning

confidence: 91%

A look into the surface chemistry of N2O decomposition on iron zeolites by transient response experiments

Pirngruber

Roy

2005

Catalysis Today

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“…[1][2][3] Studies of nitrous oxide dissociation over Cu-, Co-, and Fe-ZSM-5 show that the reaction is first order in N 2 O and in the case of Cu-ZSM-5 is inhibited by O 2 . 1,5,6,8 It has also been reported that isotopically labeled oxygen scrambles into the products of nitrous oxide dissociation in the case of Cu-ZSM-5 but not in the case of either Co-or Fe-ZSM-5. This suggests that the mechanisms of N 2 O dissociation are similar on Co-and Fe-ZSM-5, and that the mechanism for Cu-ZSM-5 may be different.…”

Section: Introductionmentioning

confidence: 99%

Density Functional Theory Study of Nitrous Oxide Decomposition over Fe- and Co-ZSM-5

2002

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Iron-and cobalt-exchanged ZSM-5 are active catalysts for the dissociation of nitrous oxide. In this study, density functional theory was used to assess a possible reaction pathway for the catalytic dissociation of N 2 O. The active center was taken to be mononuclear [FeO] + or [CoO] + , and the surrounding portion of the zeolite was respectively. The preexponential factor for the apparent first-order rate coefficient is estimated to be of the order 10 7 s -1 Pa -1 . While the calculated activation energy for Fe-ZSM-5 is in good agreement with that measured experimentally, the value of the preexponential factor is an order of magnitude smaller than that observed. The calculated activation energy for Co-ZSM-5 is higher than that reported experimentally. However, consistent with experiment, the rate of N 2 O decomposition on Co-ZSM-5 is predicted to be significantly higher than that on Fe-ZSM-5.3

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“…The 18 O enrichment inoxygen formed and released during the decomposition of 15 [10,11]. The equilibrium constant 4 in the oxygen isotopomers points to the socalled ''single'' mechanism of the I.E [12].…”

Section: Thementioning

confidence: 99%

Behavior of Active Oxygen During the Decomposition of Nitrous Oxide Over Fe-FER

Nováková

Sobalı́k

2009

Catal Lett

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Isotope exchange (I.E) of 18 O 2 for oxygen captured in Fe-FER after decomposition of nitrous oxide proceeds readily even at room temperature, provided that the amount of surface NO x species, formed as a secondary product of the N 2 O decomposition, is relatively low. If 18 O 2 is present during the decomposition of nitrous oxide above 250°C, or if nitrous oxide labeled with 18 O is employed, 18 O appears also in NO x species, and I.E easily occurs with zeolite framework oxygens.

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N2O decomposition over iron-exchanged mordenite

Cited by 105 publications

References 11 publications

A look into the surface chemistry of N2O decomposition on iron zeolites by transient response experiments

A look into the surface chemistry of N2O decomposition on iron zeolites by transient response experiments

Density Functional Theory Study of Nitrous Oxide Decomposition over Fe- and Co-ZSM-5

Behavior of Active Oxygen During the Decomposition of Nitrous Oxide Over Fe-FER

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