Low-temperature SCR of NO with NH3 over noble metal promoted Fe-ZSM-5 catalysts

Gongshin Qi; Ralph T. Yang

doi:10.1007/s10562-004-3462-5

Low-temperature SCR of NO with NH₃ over noble metal promoted Fe-ZSM-5 catalysts

Gongshin Qi
, Ralph T. Yang

Department of Chemical and Biological Engineering

University of Michigan, Ann Arbor

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

We have reported previously the excellent performance of Fe-exchanged ZSM-5 for selective catalytic reduction (SCR) of NO with ammonia at high temperatures (300-400 °C). In this work, we found that the reaction temperature could be decreased to 200-300 °C when a small amount of noble metal (Pt, Rh, or Pd) was added to the Fe-ZSM-5. The SCR activity follows the order Pt/Fe-ZSM-5 > Rh/Fe-ZSM-5 > Pd/Fe-ZSM-5 at 250 °C. On the Pt promoted Fe-ZSM-5, 90% NO conversion was obtained at 250 °C at GHSV = 1.1 × 10⁵ h^-1. Moreover, the noble metal improved the resistance to H ₂O and SO₂. The presence of H₂O and SO ₂ decreased the SCR performance only very slightly.

Original language	English
Pages (from-to)	243-246
Number of pages	4
Journal	Catalysis Letters
Volume	100
Issue number	3-4
DOIs	https://doi.org/10.1007/s10562-004-3462-5
State	Published - 2005

Keywords

Ammonia-SCR
Fe-ZSM-5
Low-temperature SCR
Noble metal promoted Fe-ZSM-5
SCR

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10.1007/s10562-004-3462-5

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title = "Low-temperature SCR of NO with NH3 over noble metal promoted Fe-ZSM-5 catalysts",

abstract = "We have reported previously the excellent performance of Fe-exchanged ZSM-5 for selective catalytic reduction (SCR) of NO with ammonia at high temperatures (300-400 °C). In this work, we found that the reaction temperature could be decreased to 200-300 °C when a small amount of noble metal (Pt, Rh, or Pd) was added to the Fe-ZSM-5. The SCR activity follows the order Pt/Fe-ZSM-5 > Rh/Fe-ZSM-5 > Pd/Fe-ZSM-5 at 250 °C. On the Pt promoted Fe-ZSM-5, 90\% NO conversion was obtained at 250 °C at GHSV = 1.1 × 105 h-1. Moreover, the noble metal improved the resistance to H 2O and SO2. The presence of H2O and SO 2 decreased the SCR performance only very slightly.",

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doi = "10.1007/s10562-004-3462-5",

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journal = "Catalysis Letters",

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T1 - Low-temperature SCR of NO with NH3 over noble metal promoted Fe-ZSM-5 catalysts

AU - Qi, Gongshin

AU - Yang, Ralph T.

PY - 2005

Y1 - 2005

N2 - We have reported previously the excellent performance of Fe-exchanged ZSM-5 for selective catalytic reduction (SCR) of NO with ammonia at high temperatures (300-400 °C). In this work, we found that the reaction temperature could be decreased to 200-300 °C when a small amount of noble metal (Pt, Rh, or Pd) was added to the Fe-ZSM-5. The SCR activity follows the order Pt/Fe-ZSM-5 > Rh/Fe-ZSM-5 > Pd/Fe-ZSM-5 at 250 °C. On the Pt promoted Fe-ZSM-5, 90% NO conversion was obtained at 250 °C at GHSV = 1.1 × 105 h-1. Moreover, the noble metal improved the resistance to H 2O and SO2. The presence of H2O and SO 2 decreased the SCR performance only very slightly.

AB - We have reported previously the excellent performance of Fe-exchanged ZSM-5 for selective catalytic reduction (SCR) of NO with ammonia at high temperatures (300-400 °C). In this work, we found that the reaction temperature could be decreased to 200-300 °C when a small amount of noble metal (Pt, Rh, or Pd) was added to the Fe-ZSM-5. The SCR activity follows the order Pt/Fe-ZSM-5 > Rh/Fe-ZSM-5 > Pd/Fe-ZSM-5 at 250 °C. On the Pt promoted Fe-ZSM-5, 90% NO conversion was obtained at 250 °C at GHSV = 1.1 × 105 h-1. Moreover, the noble metal improved the resistance to H 2O and SO2. The presence of H2O and SO 2 decreased the SCR performance only very slightly.

KW - Ammonia-SCR

KW - Fe-ZSM-5

KW - Low-temperature SCR

KW - Noble metal promoted Fe-ZSM-5

KW - SCR

UR - https://www.scopus.com/pages/publications/17444363804

U2 - 10.1007/s10562-004-3462-5

DO - 10.1007/s10562-004-3462-5

M3 - Article

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SN - 1011-372X

VL - 100

SP - 243

EP - 246

JO - Catalysis Letters

JF - Catalysis Letters

IS - 3-4

ER -

Low-temperature SCR of NO with NH₃ over noble metal promoted Fe-ZSM-5 catalysts

Abstract

Keywords

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