Lean NOx catalysis over Sn/γ-Al2O3 catalysts

M. C. Kung; P. W. Park; D. W. Kim; H. H. Kung

doi:10.1006/jcat.1998.2291

Lean NO_x catalysis over Sn/γ-Al₂O₃ catalysts

M. C. Kung, P. W. Park, D. W. Kim, H. H. Kung^*

^*Corresponding author for this work

Chemical and Biological Engineering

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

103 Scopus citations

Abstract

Sn/γ-Al₂O₃ were effective and highly stable catalysts for NO reduction with propene under high partial pressures of oxygen and water. The activity depended on the Sn loading. For a 10 wt% Sn/Al₂O₃ at 475-500°C, 58% conversion of 1000 ppm NO to N₂ was obtained in the presence of 10% water and 15% O₂, at a space velocity of 30,000 h^-1, and 77% conversion at 15,000 h^-1. The NO conversion increased with O₂ partial pressure but was suppressed by water below 500°C. The activity was also suppressed by SO₂ but could be restored slowly after the removal of SO₂.

Original language	English (US)
Article number	jcat.1998.2291
Pages (from-to)	1-5
Number of pages	5
Journal	Journal of Catalysis
Volume	181
Issue number	1
DOIs	https://doi.org/10.1006/jcat.1998.2291
State	Published - 1999

Funding

Support by the U.S. Department of Energy, Basic Energy Sciences and General Motors Corporation is gratefully acknowledged.

ASJC Scopus subject areas

Catalysis
Physical and Theoretical Chemistry

Access to Document

10.1006/jcat.1998.2291

Cite this

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abstract = "Sn/γ-Al2O3 were effective and highly stable catalysts for NO reduction with propene under high partial pressures of oxygen and water. The activity depended on the Sn loading. For a 10 wt% Sn/Al2O3 at 475-500°C, 58% conversion of 1000 ppm NO to N2 was obtained in the presence of 10% water and 15% O2, at a space velocity of 30,000 h-1, and 77% conversion at 15,000 h-1. The NO conversion increased with O2 partial pressure but was suppressed by water below 500°C. The activity was also suppressed by SO2 but could be restored slowly after the removal of SO2.",

author = "Kung, {M. C.} and Park, {P. W.} and Kim, {D. W.} and Kung, {H. H.}",

note = "Funding Information: Support by the U.S. Department of Energy, Basic Energy Sciences and General Motors Corporation is gratefully acknowledged.",

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AU - Park, P. W.

AU - Kim, D. W.

AU - Kung, H. H.

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AB - Sn/γ-Al2O3 were effective and highly stable catalysts for NO reduction with propene under high partial pressures of oxygen and water. The activity depended on the Sn loading. For a 10 wt% Sn/Al2O3 at 475-500°C, 58% conversion of 1000 ppm NO to N2 was obtained in the presence of 10% water and 15% O2, at a space velocity of 30,000 h-1, and 77% conversion at 15,000 h-1. The NO conversion increased with O2 partial pressure but was suppressed by water below 500°C. The activity was also suppressed by SO2 but could be restored slowly after the removal of SO2.

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