Role of tungsten in promoting selective reduction of NO with CO over Ir/WO3-SiO2 catalysts

Atsushi Takahashi; Isao Nakamura; Masaaki Haneda; Tadahiro Fujitani; Hideaki Hamada

doi:10.1007/s10562-006-0192-x

Role of tungsten in promoting selective reduction of NO with CO over Ir/WO₃-SiO₂ catalysts

Atsushi Takahashi, Isao Nakamura, Masaaki Haneda, Tadahiro Fujitani, Hideaki Hamada

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

18 Citations (Scopus)

Abstract

The catalytic activity for the selective reduction of NO with CO over Ir/SiO₂ was greatly increased by the addition of a W species. The active site for reduction of NO over Ir/WO₃-SiO₂ was an Ir-WO _x species (2.92 ≤ x ≤ 3). The role of the Ir-WO _x active site was to promote the NO dissociation step.

Original language	English
Pages (from-to)	133-138
Number of pages	6
Journal	Catalysis Letters
Volume	112
Issue number	3-4
DOIs	https://doi.org/10.1007/s10562-006-0192-x
Publication status	Published - 2006 Dec 1
Externally published	Yes

Keywords

Carbon monoxide
Iridium
Nitrogen monoxide
Selective reduction
Tungsten

ASJC Scopus subject areas

Catalysis
Chemistry(all)

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AU - Takahashi, Atsushi

AU - Nakamura, Isao

AU - Haneda, Masaaki

AU - Fujitani, Tadahiro

AU - Hamada, Hideaki

PY - 2006/12/1

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N2 - The catalytic activity for the selective reduction of NO with CO over Ir/SiO2 was greatly increased by the addition of a W species. The active site for reduction of NO over Ir/WO3-SiO2 was an Ir-WO x species (2.92 ≤ x ≤ 3). The role of the Ir-WO x active site was to promote the NO dissociation step.

AB - The catalytic activity for the selective reduction of NO with CO over Ir/SiO2 was greatly increased by the addition of a W species. The active site for reduction of NO over Ir/WO3-SiO2 was an Ir-WO x species (2.92 ≤ x ≤ 3). The role of the Ir-WO x active site was to promote the NO dissociation step.

KW - Carbon monoxide

KW - Iridium

KW - Nitrogen monoxide

KW - Selective reduction

KW - Tungsten

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