Catalytic reduction of nitrate in water over Pd-Cu/TiO2 catalyst: Effect of the strong metal-support interaction (SMSI) on the catalytic activity

Min Sung Kim; Sang Ho Chung; Chun Jae Yoo; Myung Suk Lee; Il Hyoung Cho; Dae Won Lee; Kwan Young Lee

doi:10.1016/j.apcatb.2013.05.033

Catalytic reduction of nitrate in water over Pd-Cu/TiO₂ catalyst: Effect of the strong metal-support interaction (SMSI) on the catalytic activity

Min Sung Kim
, Sang Ho Chung
, Chun Jae Yoo
, Myung Suk Lee
, Il Hyoung Cho
, Dae Won Lee^*
, Kwan Young Lee

^*Corresponding author for this work

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

148 Citations (Scopus)

Abstract

In this study, we prepared TiO₂-supported Pd-Cu catalysts of different anatase/rutile phase compositions, which were used in a nitrate reduction in water. It was shown that the catalysts containing a greater anatase phase composition had higher catalytic performance. Through characterization studies using H₂-temperature programmed reduction (H₂-TPR) and X-ray photoelectron spectroscopy (XPS), the observed trend of the catalytic activity was correlated to the degree of the strong metal-support interaction (SMSI) over the catalysts. The SMSI occurred through pre-treatment of the catalysts by H₂ reduction (at 200°C), which resulted in increased partially reduced TiO_2-x and electron-rich active metal (Pd and Cu) states at the catalyst of higher composition of anatase phase. The relationships between the changes in the properties and activities of the catalysts as a result of the anatase phase composition are discussed.

Original language	English
Pages (from-to)	354-361
Number of pages	8
Journal	Applied Catalysis B: Environmental
Volume	142-143
DOIs	https://doi.org/10.1016/j.apcatb.2013.05.033
Publication status	Published - 2013 Oct

Bibliographical note

Funding Information:
This work is supported by Korea Ministry of Environment as “Global Top Project” (Project No.: GT-11-B-01-007-0).

Keywords

H-TPR
Nitrate reduction
Pd-Cu/TiO
SMSI
XPS

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

Access to Document

10.1016/j.apcatb.2013.05.033

Cite this

@article{c0fb675480034c2c9c00dfcdb59d5bd8,

title = "Catalytic reduction of nitrate in water over Pd-Cu/TiO2 catalyst: Effect of the strong metal-support interaction (SMSI) on the catalytic activity",

abstract = "In this study, we prepared TiO2-supported Pd-Cu catalysts of different anatase/rutile phase compositions, which were used in a nitrate reduction in water. It was shown that the catalysts containing a greater anatase phase composition had higher catalytic performance. Through characterization studies using H2-temperature programmed reduction (H2-TPR) and X-ray photoelectron spectroscopy (XPS), the observed trend of the catalytic activity was correlated to the degree of the strong metal-support interaction (SMSI) over the catalysts. The SMSI occurred through pre-treatment of the catalysts by H2 reduction (at 200°C), which resulted in increased partially reduced TiO2-x and electron-rich active metal (Pd and Cu) states at the catalyst of higher composition of anatase phase. The relationships between the changes in the properties and activities of the catalysts as a result of the anatase phase composition are discussed.",

keywords = "H-TPR, Nitrate reduction, Pd-Cu/TiO, SMSI, XPS",

author = "Kim, \{Min Sung\} and Chung, \{Sang Ho\} and Yoo, \{Chun Jae\} and Lee, \{Myung Suk\} and Cho, \{Il Hyoung\} and Lee, \{Dae Won\} and Lee, \{Kwan Young\}",

note = "Funding Information: This work is supported by Korea Ministry of Environment as “Global Top Project” (Project No.: GT-11-B-01-007-0).",

year = "2013",

month = oct,

doi = "10.1016/j.apcatb.2013.05.033",

language = "English",

volume = "142-143",

pages = "354--361",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

publisher = "Elsevier B.V.",

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T1 - Catalytic reduction of nitrate in water over Pd-Cu/TiO2 catalyst

T2 - Effect of the strong metal-support interaction (SMSI) on the catalytic activity

AU - Kim, Min Sung

AU - Chung, Sang Ho

AU - Yoo, Chun Jae

AU - Lee, Myung Suk

AU - Cho, Il Hyoung

AU - Lee, Dae Won

AU - Lee, Kwan Young

N1 - Funding Information: This work is supported by Korea Ministry of Environment as “Global Top Project” (Project No.: GT-11-B-01-007-0).

PY - 2013/10

Y1 - 2013/10

N2 - In this study, we prepared TiO2-supported Pd-Cu catalysts of different anatase/rutile phase compositions, which were used in a nitrate reduction in water. It was shown that the catalysts containing a greater anatase phase composition had higher catalytic performance. Through characterization studies using H2-temperature programmed reduction (H2-TPR) and X-ray photoelectron spectroscopy (XPS), the observed trend of the catalytic activity was correlated to the degree of the strong metal-support interaction (SMSI) over the catalysts. The SMSI occurred through pre-treatment of the catalysts by H2 reduction (at 200°C), which resulted in increased partially reduced TiO2-x and electron-rich active metal (Pd and Cu) states at the catalyst of higher composition of anatase phase. The relationships between the changes in the properties and activities of the catalysts as a result of the anatase phase composition are discussed.

AB - In this study, we prepared TiO2-supported Pd-Cu catalysts of different anatase/rutile phase compositions, which were used in a nitrate reduction in water. It was shown that the catalysts containing a greater anatase phase composition had higher catalytic performance. Through characterization studies using H2-temperature programmed reduction (H2-TPR) and X-ray photoelectron spectroscopy (XPS), the observed trend of the catalytic activity was correlated to the degree of the strong metal-support interaction (SMSI) over the catalysts. The SMSI occurred through pre-treatment of the catalysts by H2 reduction (at 200°C), which resulted in increased partially reduced TiO2-x and electron-rich active metal (Pd and Cu) states at the catalyst of higher composition of anatase phase. The relationships between the changes in the properties and activities of the catalysts as a result of the anatase phase composition are discussed.

KW - H-TPR

KW - Nitrate reduction

KW - Pd-Cu/TiO

KW - SMSI

KW - XPS

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DO - 10.1016/j.apcatb.2013.05.033

M3 - Article

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JO - Applied Catalysis B: Environmental

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