Electrochemical decomposition of urea with Ni-based catalysts

被引：267

作者：

Yan, Wei ^{[1
]}

Wang, Dan ^{[1
]}

Botte, Gerardine G. ^{[1
]}

机构：

[1] Ohio Univ, Ctr Electrochem Engn Res, Chem & Biomol Engn Dept, Stocker Ctr 165, Athens, OH 45701 USA

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2012年 / 127卷

关键词：

Urea-rich wastewater; Environmental pollutants; Urea removal/decomposition; Ni-Zn and Ni-Zn-Co catalysts; Hydrogen production; HYDROGEN-PRODUCTION; ELECTROCATALYTIC OXIDATION; THERMAL HYDROLYSER; ALKALINE-SOLUTION; METAL-CATALYSTS; WASTE-WATER; BORIC-ACID; NICKEL; ELECTROLYSIS; ELECTROOXIDATION;

D O I：

10.1016/j.apcatb.2012.08.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nickel based catalysts (Ni, Ni-Zn, and Ni-Zn-Co) synthesized through electrodeposition and alkaline leaching processes were used as electrocatalysts for the electrochemical decomposition of urea to benign nitrogen and fuel cell grade hydrogen. The performances of the Ni-based catalysts for the urea decomposition were investigated through cyclic voltammetry (CV) and polarization techniques. The results of the CVs show that the Ni-Zn catalysts and the Ni-Zn-Co catalysts decreased the onset potential of urea oxidation by 40 mV and 80 my, respectively when compared to Ni catalysts. The highest efficiency for the oxidation of urea was observed with the Ni-Zn-Co catalysts. The Ni-Zn and Ni-Zn-Co catalysts are promising materials for large-scale urea removal/decomposition from urea-rich wastewater, as well as for hydrogen production. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：221 / 226

页数：6

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