Selective reduction of NO 3 - to N 2 with bimetallic particles of Zn coupled with palladium, platinum, and copper

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題名:	Selective reduction of NO 3 - to N 2 with bimetallic particles of Zn coupled with palladium, platinum, and copper
作者:	林進榮;Liou, Ya Hsuan;Lin, Chin Jung;Hung, I. Chun;Chen, Szu Ying;Lo, Shang Lien
貢獻者:	工學院環境工程研究所
關鍵詞:	Bimetallic;BIMETALS;CATHODES;chemical engineering;Copper;dissolved oxygen;hydrogen;iron;Nitrate;Nitrite;NITROGEN OXIDE;Palladium;Platinum;Reduction;Selectivity;Zinc
日期:	2012-02-01
上傳時間:	2026-04-23 15:09:10 (UTC+8)
出版者:	Elsevier;Elsevier B.V
摘要:	摘要： ► We use bimetallic particles to selectively reduce NO3− to N2 gas. ► The selectivity of N2 production is highly promoted after bimetal deposition. ► Pd content, solution pH, and dissolved oxygen affect the selectivity for produced N2. ► The produced N2 increases with increased adsorbed atomic hydrogen at the surface. The selective reduction of NO3− to N2 gas using bimetallic particles of Pd/Zn, Pt/Zn, and Cu/Zn at circum-neutral pH is investigated. In the reduction of NO3− by naked iron and zinc, NH4+ is the only detectable stable product with about 100% recovery of N element. After bimetal deposition, the selectivity of N2 production is highly promoted. Of the bimetallic particles, 1wt.% Pd/Zn shows a maximum 60% selectivity, much higher than those of Cu/Zn and Pt/Zn. The significant effects of Pd content, solution pH, and dissolved oxygen on the selectivity for N2 suggest that the reduction of NO3− to N2 is cathodically controlled, at which the N2 produced was increases with increased concentration of adsorbed atomic hydrogen at the surface. 出版者： Elsevier B.V 出版日期： 2012-02-01 出處： Chemical engineering journal (Lausanne, Switzerland : 1996), 2012-02, Vol.181-182, p.236-242 版權： 2011 Elsevier B.V. 識別號： ISSN: 1385-8947 識別號： EISSN: 1873-3212 識別號： DOI: 10.1016/j.cej.2011.11.071
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