Highly active and stable ion-exchanged Fe–Ferrierite catalyst for N2O decomposition under nitric acid tail gas conditions

Melián‐Cabrera, Ignacio; Mentruit, Cristina; Pieterse, J.A.Z.; Brink, R.W. van den; Mul, Guido; Kapteijn, Freek; Moulijn, Jacob A.

doi:10.1016/j.catcom.2005.01.004

Cited by 51 publications

(35 citation statements)

References 18 publications

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“…In addition, Arrhenius plots give the apparent activation energy E a of Table 2. Generally, the existence of NO in reaction system shows distinct positive effect on N 2 O decomposition while H 2 O and O 2 shows mild negative effects, in consistent with those reported for iron-zeolites [19,20].…”

Section: Resultssupporting

confidence: 77%

Wet ion exchanged Fe-USY catalyst for effective N2O decomposition

Shen

et al. 2008

Catalysis Communications

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Zeolite matrix FAU with large channel dissension is applied as good host for iron species and Fe-USY sample is prepared by wet ion exchange method using ferric salt as the iron source. The as-prepared Fe-USY catalyst exhibits quite good activity for N 2 O decomposition and a 100% conversion (to N 2 and O 2 ) can be achieved at above 748 K. Besides, Fe-USY shows good durability for N 2 O decomposition under simulated conditions at a typical nitric acid plant, which demonstrates its potential for future application.

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Section: Resultssupporting

confidence: 77%

Wet ion exchanged Fe-USY catalyst for effective N2O decomposition

Shen

et al. 2008

Catalysis Communications

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“…We note that the full exchange can be also achieved on ferrierite (12,13,16) (12,13), with Fe/Al ) 0.28. In our opinion, heating dissociates the hydrated ferric ions to lose some coordinated water, so that the hydrated ion size can be reduced and the steric hindrance of the ion diffusion into ferrierite channels becomes smaller.…”

Section: Resultsmentioning

confidence: 76%

Fe−USY Zeolite Catalyst for Effective Decomposition of Nitrous Oxide

Shen

et al. 2007

Environ. Sci. Technol.

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Zeolite matrix FAU is applied as an effective support that can be readily exchanged with ferric ions simply by wet ion exchange. The high exchange degree in this zeolite (USY) probably benefits from its larger channel dimension, which makes the diffusion of hydrated ferric ions into the channels easier. The as-prepared and subsequently calcined Fe-USY samples contain various kinds of iron species, which enable Fe-USY to efficiently decompose N 2 O to N 2 and O 2 . The presence of O 2 (20%), H 2 O (2%), or both reduces the N 2 O conversion only to a small extent at the same temperature. To test the feasibility and the catalytic activity in a practical situation, we prepared a monolithic Fe-USY/cordierite sample and investigated the N 2 O conversion under similar conditions. Such a cordieritesupported Fe-USY catalyst (∼9 wt % USY and 0.5 wt % Fe) shows the catalytic performance in N 2 O decomposition similar to the pure Fe-USY catalyst. Remarkably, both the pure Fe-USY and Fe-USY/cordierite catalysts demonstrate a very good durability because there is no activity lost after 100 and 144 h tests. Thus, the Fe-USY zeolite shows its potential as a cost-effective catalyst for N 2 O elimination in future applications.

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“…supported noble metals [3][4][5], mixed oxides with different structure [6][7][8][9][10], iron zeolites [11][12][13][14][15], have been investigated for N 2 O decomposition. Supported cobalt catalysts have received considerable attention due to high activity [16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

A study on N2O catalytic decomposition over Co/MgO catalysts

Shen

et al. 2009

Journal of Hazardous Materials

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Highly active and stable ion-exchanged Fe–Ferrierite catalyst for N2O decomposition under nitric acid tail gas conditions

Cited by 51 publications

References 18 publications

Wet ion exchanged Fe-USY catalyst for effective N2O decomposition

Wet ion exchanged Fe-USY catalyst for effective N2O decomposition

Fe−USY Zeolite Catalyst for Effective Decomposition of Nitrous Oxide

A study on N2O catalytic decomposition over Co/MgO catalysts

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