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- Chung, Sang-Ho
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Pd-Cu bimetallic catalysts supported on TiO2-CeO2 mixed oxides for aqueous nitrate reduction by hydrogen
- Author(s)
- Kim, Min-Sung, Lee, Dae-Won, Chung, Sang-Ho, Kim, Ji Tae, Cho, Il-Hyoung, Lee, Kwan-Young
- Issued Date
- 2014-10
- Citation
- JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, v.392, pp.308 - 314
- 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 mmolimin/g(cat), eight times higher than that of Pd-Cu/TiO2 (0.41 mmol/min/g(cat)). 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. (C) 2014 Elsevier B.V. All rights reserved.
- Publisher
- ELSEVIER
- ISSN
- 1381-1169
- Keyword (Author)
- Nitrate reduction, Water treatment, TiO2-CeO2, Pd-Cu, Bimetallic catalyst
- Keyword
- PT-CU, OXIDATION-STATE, WATER, COPPER, PALLADIUM, PLATINUM, NITRITE, CARBON, CO, DECOMPOSITION
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