925银电极上同步电化学还原NO2-与CO2合成尿素

何志桥; 屠锦军; 宋爽; 裘建平; 陈建孟

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925银电极上同步电化学还原NO₂^-与CO₂合成尿素

能源和环境工程 | 更新时间：2025-12-10

- 925银电极上同步电化学还原NO₂^-与CO₂合成尿素
- Electrochemical synthesis of urea by simultaneous reduction of nitrite and carbon dioxide at 925 Ag electrode
- 化工学报 2008年第6期页码：1541-1544
- 作者机构：
  
  浙江工业大学生物与环境工程学院
- 作者简介：
- 基金信息：
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- 网络首发：2008-06-05，
  
  纸质出版：2008-06-05
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何志桥, 屠锦军, 宋爽, 等. 925银电极上同步电化学还原NO₂^-与CO₂合成尿素[J]. 化工学报, 2008,(6):1541-1544.

HE Zhiqiao, TU Jinjun, SONG Shuang, et al. Electrochemical synthesis of urea by simultaneous reduction of nitrite and carbon dioxide at 925 Ag electrode[J]. CIESC Journal, 2008, (6): 1541-1544.
何志桥, 屠锦军, 宋爽, 等. 925银电极上同步电化学还原NO₂^-与CO₂合成尿素[J]. 化工学报, 2008,(6):1541-1544. DOI：

HE Zhiqiao, TU Jinjun, SONG Shuang, et al. Electrochemical synthesis of urea by simultaneous reduction of nitrite and carbon dioxide at 925 Ag electrode[J]. CIESC Journal, 2008, (6): 1541-1544. DOI：

摘要

Abstract

The electrochemical synthesis of urea by simultaneous reduction of nitrite and CO2 was performed in 0.02 mol·L-1 NaNO2 and 0.2 mol·L-1 NaHCO3 aqueous solutions at 925 Ag electrode in laboratory-scale experiments.The effect of several parameters

including electrolysis potential

temperature

and CO2 pressure

on urea formation was investigated.At the temperature of 293 K

CO2 pressure of 0.7 MPa

the electrolytic potential of -0.6 V

the current efficiency of urea formation reached 37%.Under the conditions of temperature of 273 K and electrolytic potential of -1.7 V

the current efficiency reached 26% under normal ambient pressure.Based on the relationship of current efficiency and formation of CO

NH3 and urea

a tentative reaction pathway was proposed.

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