Pd-Cu bimetallic catalysts supported on TiO2-CeO2 mixed oxides for aqueous nitrate reduction by hydrogen

Min Sung Kim, Dae Won Lee, Sang Ho Chung, Ji Tae Kim, Il Hyoung Cho, Kwan Young Lee

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Pd-Cu supported on TiO2-CeO2 mixed oxides (Pd-Cu/TiO2-CeO2) were tested for the reduction of nitrate ions in water. Compared with a Pd-Cu catalyst with TiO2 only as support (Pd-Cu/TiO2), which was proved to be active for this reaction in our previous study, Pd-Cu/TiO2-CeO2 showed improved activity if TiO2-CeO2 contained an appropriate amount of ceria (Ti:Ce = 18:1). Especially, the Pd-Cu/TiO2-CeO2 (Ti:Ce = 18:1) showed the initial nitrate reduction rate of 3.20 mmol/min/g cat, eight times higher than that of Pd-Cu/TiO2 (0.41 mmol/min/gcat). It was supposed that the improved activity of the catalyst was attributable to the reduced surface (oxygen vacancies) of the support and zero-valence states of the active metals (including the Pd-Cu alloy) in the catalyst.

Original languageEnglish
Pages (from-to)308-314
Number of pages7
JournalJournal of Molecular Catalysis A: Chemical
Volume392
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

mixed oxides
Catalyst supports
Nitrates
Oxides
nitrates
Hydrogen
catalysts
Catalysts
hydrogen
cats
Cerium compounds
Oxygen vacancies
Metals
Ions
valence
Water
oxygen
metals
water
ions

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry
  • Process Chemistry and Technology

Cite this

Pd-Cu bimetallic catalysts supported on TiO2-CeO2 mixed oxides for aqueous nitrate reduction by hydrogen. / Kim, Min Sung; Lee, Dae Won; Chung, Sang Ho; Kim, Ji Tae; Cho, Il Hyoung; Lee, Kwan Young.

In: Journal of Molecular Catalysis A: Chemical, Vol. 392, 01.01.2014, p. 308-314.

Research output: Contribution to journalArticle

Kim, Min Sung ; Lee, Dae Won ; Chung, Sang Ho ; Kim, Ji Tae ; Cho, Il Hyoung ; Lee, Kwan Young. / Pd-Cu bimetallic catalysts supported on TiO2-CeO2 mixed oxides for aqueous nitrate reduction by hydrogen. In: Journal of Molecular Catalysis A: Chemical. 2014 ; Vol. 392. pp. 308-314.
@article{c7d776aa7e2445a4a02c86639ffd4cde,
title = "Pd-Cu bimetallic catalysts supported on TiO2-CeO2 mixed oxides for aqueous nitrate reduction by hydrogen",
abstract = "Pd-Cu supported on TiO2-CeO2 mixed oxides (Pd-Cu/TiO2-CeO2) were tested for the reduction of nitrate ions in water. Compared with a Pd-Cu catalyst with TiO2 only as support (Pd-Cu/TiO2), which was proved to be active for this reaction in our previous study, Pd-Cu/TiO2-CeO2 showed improved activity if TiO2-CeO2 contained an appropriate amount of ceria (Ti:Ce = 18:1). Especially, the Pd-Cu/TiO2-CeO2 (Ti:Ce = 18:1) showed the initial nitrate reduction rate of 3.20 mmol/min/g cat, eight times higher than that of Pd-Cu/TiO2 (0.41 mmol/min/gcat). It was supposed that the improved activity of the catalyst was attributable to the reduced surface (oxygen vacancies) of the support and zero-valence states of the active metals (including the Pd-Cu alloy) in the catalyst.",
keywords = "Bimetallic catalyst, Nitrate reduction, Pd-Cu, Water treatment",
author = "Kim, {Min Sung} and Lee, {Dae Won} and Chung, {Sang Ho} and Kim, {Ji Tae} and Cho, {Il Hyoung} and Lee, {Kwan Young}",
year = "2014",
month = "1",
day = "1",
doi = "10.1016/j.molcata.2014.05.034",
language = "English",
volume = "392",
pages = "308--314",
journal = "Journal of Molecular Catalysis A: Chemical",
issn = "1381-1169",
publisher = "Elsevier",

}

TY - JOUR

T1 - Pd-Cu bimetallic catalysts supported on TiO2-CeO2 mixed oxides for aqueous nitrate reduction by hydrogen

AU - Kim, Min Sung

AU - Lee, Dae Won

AU - Chung, Sang Ho

AU - Kim, Ji Tae

AU - Cho, Il Hyoung

AU - Lee, Kwan Young

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Pd-Cu supported on TiO2-CeO2 mixed oxides (Pd-Cu/TiO2-CeO2) were tested for the reduction of nitrate ions in water. Compared with a Pd-Cu catalyst with TiO2 only as support (Pd-Cu/TiO2), which was proved to be active for this reaction in our previous study, Pd-Cu/TiO2-CeO2 showed improved activity if TiO2-CeO2 contained an appropriate amount of ceria (Ti:Ce = 18:1). Especially, the Pd-Cu/TiO2-CeO2 (Ti:Ce = 18:1) showed the initial nitrate reduction rate of 3.20 mmol/min/g cat, eight times higher than that of Pd-Cu/TiO2 (0.41 mmol/min/gcat). It was supposed that the improved activity of the catalyst was attributable to the reduced surface (oxygen vacancies) of the support and zero-valence states of the active metals (including the Pd-Cu alloy) in the catalyst.

AB - Pd-Cu supported on TiO2-CeO2 mixed oxides (Pd-Cu/TiO2-CeO2) were tested for the reduction of nitrate ions in water. Compared with a Pd-Cu catalyst with TiO2 only as support (Pd-Cu/TiO2), which was proved to be active for this reaction in our previous study, Pd-Cu/TiO2-CeO2 showed improved activity if TiO2-CeO2 contained an appropriate amount of ceria (Ti:Ce = 18:1). Especially, the Pd-Cu/TiO2-CeO2 (Ti:Ce = 18:1) showed the initial nitrate reduction rate of 3.20 mmol/min/g cat, eight times higher than that of Pd-Cu/TiO2 (0.41 mmol/min/gcat). It was supposed that the improved activity of the catalyst was attributable to the reduced surface (oxygen vacancies) of the support and zero-valence states of the active metals (including the Pd-Cu alloy) in the catalyst.

KW - Bimetallic catalyst

KW - Nitrate reduction

KW - Pd-Cu

KW - Water treatment

UR - http://www.scopus.com/inward/record.url?scp=84903160720&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84903160720&partnerID=8YFLogxK

U2 - 10.1016/j.molcata.2014.05.034

DO - 10.1016/j.molcata.2014.05.034

M3 - Article

AN - SCOPUS:84903160720

VL - 392

SP - 308

EP - 314

JO - Journal of Molecular Catalysis A: Chemical

JF - Journal of Molecular Catalysis A: Chemical

SN - 1381-1169

ER -