Selective reduction of NO2 with acetaldehyde over Co/Al2O3 in lean conditions

Atsushi Takahashi; Masaaki Haneda; Tadahiro Fujitani; Hideaki Hamada

doi:10.1016/j.molcata.2006.07.065

Selective reduction of NO₂ with acetaldehyde over Co/Al₂O₃ in lean conditions

Atsushi Takahashi, Masaaki Haneda, Tadahiro Fujitani, Hideaki Hamada

ENG - Chemical Engineering

National Institute of Advanced Industrial Science and Technology

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

11 Citations (Scopus)

Abstract

Selective reduction of NO₂ with acetaldehyde (CH₃CHO) was investigated over alumina-supported catalysts. Among the catalysts tested, Co/Al₂O₃ showed the highest activity with a maximum performance at 2 wt.% Co loading. The comparison of the activity of Co/Al₂O₃ and Al₂O₃ for several unit reactions suggested that one of the roles of supported Co is to suppress the combustion of CH₃CHO by O₂, resulting in an enhancement of the selective reaction of CH₃CHO with NO₂. The observation of the adsorbed species by in situ FT-IR spectroscopy showed that enolate species acts as the intermediate for NO₂ reduction by CH₃CHO and that another role of Co is to promote the production of the enolate species.

Original language	English
Pages (from-to)	6-11
Number of pages	6
Journal	Journal of Molecular Catalysis A: Chemical
Volume	261
Issue number	1
DOIs	https://doi.org/10.1016/j.molcata.2006.07.065
Publication status	Published - 2007 Jan 2

Keywords

Acetaldehyde
Co/AlO
NO selective reduction

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10.1016/j.molcata.2006.07.065

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title = "Selective reduction of NO2 with acetaldehyde over Co/Al2O3 in lean conditions",

abstract = "Selective reduction of NO2 with acetaldehyde (CH3CHO) was investigated over alumina-supported catalysts. Among the catalysts tested, Co/Al2O3 showed the highest activity with a maximum performance at 2 wt.% Co loading. The comparison of the activity of Co/Al2O3 and Al2O3 for several unit reactions suggested that one of the roles of supported Co is to suppress the combustion of CH3CHO by O2, resulting in an enhancement of the selective reaction of CH3CHO with NO2. The observation of the adsorbed species by in situ FT-IR spectroscopy showed that enolate species acts as the intermediate for NO2 reduction by CH3CHO and that another role of Co is to promote the production of the enolate species.",

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T1 - Selective reduction of NO2 with acetaldehyde over Co/Al2O3 in lean conditions

AU - Takahashi, Atsushi

AU - Haneda, Masaaki

AU - Fujitani, Tadahiro

AU - Hamada, Hideaki

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N2 - Selective reduction of NO2 with acetaldehyde (CH3CHO) was investigated over alumina-supported catalysts. Among the catalysts tested, Co/Al2O3 showed the highest activity with a maximum performance at 2 wt.% Co loading. The comparison of the activity of Co/Al2O3 and Al2O3 for several unit reactions suggested that one of the roles of supported Co is to suppress the combustion of CH3CHO by O2, resulting in an enhancement of the selective reaction of CH3CHO with NO2. The observation of the adsorbed species by in situ FT-IR spectroscopy showed that enolate species acts as the intermediate for NO2 reduction by CH3CHO and that another role of Co is to promote the production of the enolate species.

AB - Selective reduction of NO2 with acetaldehyde (CH3CHO) was investigated over alumina-supported catalysts. Among the catalysts tested, Co/Al2O3 showed the highest activity with a maximum performance at 2 wt.% Co loading. The comparison of the activity of Co/Al2O3 and Al2O3 for several unit reactions suggested that one of the roles of supported Co is to suppress the combustion of CH3CHO by O2, resulting in an enhancement of the selective reaction of CH3CHO with NO2. The observation of the adsorbed species by in situ FT-IR spectroscopy showed that enolate species acts as the intermediate for NO2 reduction by CH3CHO and that another role of Co is to promote the production of the enolate species.

KW - Acetaldehyde

KW - Co/AlO

KW - NO selective reduction

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Selective reduction of NO₂ with acetaldehyde over Co/Al₂O₃ in lean conditions

Abstract

Keywords

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