Effect of water vapor over Pd-Co/SZ catalyst for the NO selective reduction by methane

C. E. Quincoces; S. Guerrero; P. Araya; M. G. González

doi:10.1016/j.catcom.2004.11.002

Effect of water vapor over Pd-Co/SZ catalyst for the NO selective reduction by methane

C. E. Quincoces, S. Guerrero, P. Araya, M. G. González^*

^*Corresponding author for this work

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

24 Scopus citations

Abstract

The selective catalytic reduction (SCR) of NO by CH₄ in the presence of excess O₂ has been studied on Pd-Co, Pd and Co catalysts supported on sulfated zirconia (SZ) and activated in reaction mixture at 700 °C. After the addition of Co on Pd/SZ, an promoting effect on the catalytic activity was achieved, especially on 0.2%Pd-2%Co/SZ, which showed the maximum NO conversion higher 60% at 500 °C and 31,000 h^-1. The bimetallic catalyst presented practical activity in the presence of water vapor. Stable NO_x conversion was obtained for over 50 h in the presence of 6% water vapor. In order to correlate the catalysts composition with their activity, they were characterized by X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS) and temperature programmed reduction (TPR) techniques.

Original language	English
Pages (from-to)	75-80
Number of pages	6
Journal	Catalysis Communications
Volume	6
Issue number	1
DOIs	https://doi.org/10.1016/j.catcom.2004.11.002
State	Published - Jan 2005
Externally published	Yes

Bibliographical note

Funding Information:
This work has been supported by the ANPCyT (PICT 13-08112). We acknowledge Universidad de La Plata (Argentina), Universidad de Chile (Chile) and CYTED (España) for their financial assistance.

Keywords

Methane
NO reduction
Sulfated zirconia
Water tolerance

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10.1016/j.catcom.2004.11.002

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title = "Effect of water vapor over Pd-Co/SZ catalyst for the NO selective reduction by methane",

abstract = "The selective catalytic reduction (SCR) of NO by CH4 in the presence of excess O2 has been studied on Pd-Co, Pd and Co catalysts supported on sulfated zirconia (SZ) and activated in reaction mixture at 700 °C. After the addition of Co on Pd/SZ, an promoting effect on the catalytic activity was achieved, especially on 0.2%Pd-2%Co/SZ, which showed the maximum NO conversion higher 60% at 500 °C and 31,000 h-1. The bimetallic catalyst presented practical activity in the presence of water vapor. Stable NOx conversion was obtained for over 50 h in the presence of 6% water vapor. In order to correlate the catalysts composition with their activity, they were characterized by X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS) and temperature programmed reduction (TPR) techniques.",

keywords = "Methane, NO reduction, Sulfated zirconia, Water tolerance",

author = "Quincoces, {C. E.} and S. Guerrero and P. Araya and Gonz{\'a}lez, {M. G.}",

note = "Funding Information: This work has been supported by the ANPCyT (PICT 13-08112). We acknowledge Universidad de La Plata (Argentina), Universidad de Chile (Chile) and CYTED (Espa{\~n}a) for their financial assistance.",

year = "2005",

month = jan,

doi = "10.1016/j.catcom.2004.11.002",

language = "English",

volume = "6",

pages = "75--80",

journal = "Catalysis Communications",

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T1 - Effect of water vapor over Pd-Co/SZ catalyst for the NO selective reduction by methane

AU - Quincoces, C. E.

AU - Guerrero, S.

AU - Araya, P.

AU - González, M. G.

N1 - Funding Information: This work has been supported by the ANPCyT (PICT 13-08112). We acknowledge Universidad de La Plata (Argentina), Universidad de Chile (Chile) and CYTED (España) for their financial assistance.

PY - 2005/1

Y1 - 2005/1

N2 - The selective catalytic reduction (SCR) of NO by CH4 in the presence of excess O2 has been studied on Pd-Co, Pd and Co catalysts supported on sulfated zirconia (SZ) and activated in reaction mixture at 700 °C. After the addition of Co on Pd/SZ, an promoting effect on the catalytic activity was achieved, especially on 0.2%Pd-2%Co/SZ, which showed the maximum NO conversion higher 60% at 500 °C and 31,000 h-1. The bimetallic catalyst presented practical activity in the presence of water vapor. Stable NOx conversion was obtained for over 50 h in the presence of 6% water vapor. In order to correlate the catalysts composition with their activity, they were characterized by X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS) and temperature programmed reduction (TPR) techniques.

AB - The selective catalytic reduction (SCR) of NO by CH4 in the presence of excess O2 has been studied on Pd-Co, Pd and Co catalysts supported on sulfated zirconia (SZ) and activated in reaction mixture at 700 °C. After the addition of Co on Pd/SZ, an promoting effect on the catalytic activity was achieved, especially on 0.2%Pd-2%Co/SZ, which showed the maximum NO conversion higher 60% at 500 °C and 31,000 h-1. The bimetallic catalyst presented practical activity in the presence of water vapor. Stable NOx conversion was obtained for over 50 h in the presence of 6% water vapor. In order to correlate the catalysts composition with their activity, they were characterized by X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS) and temperature programmed reduction (TPR) techniques.

KW - Methane

KW - NO reduction

KW - Sulfated zirconia

KW - Water tolerance

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DO - 10.1016/j.catcom.2004.11.002

M3 - Article

AN - SCOPUS:10644271760

SN - 1566-7367

VL - 6

SP - 75

EP - 80

JO - Catalysis Communications

JF - Catalysis Communications

IS - 1

ER -

Effect of water vapor over Pd-Co/SZ catalyst for the NO selective reduction by methane

Abstract

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Keywords

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