On-line mass spectroscopy applied to electroreduction of nitrite and nitrate ions at porous Pt electrode in sulfuric acid solutions
On-line mass spectroscopy applied to electroreduction of nitrite and nitrate ions at porous Pt electrode in sulfuric acid solutions
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DOI：
10.1016/0013-4686(91)85288-i
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发表时间：
1991
影响因子：
6.6
通讯作者：
K. Nishimura;K. Machida;M. Enyo
中科院分区：
文献类型：
--
作者：
K. Nishimura;K. Machida;M. Enyo
应用在线质谱检测在0.5M H2SO 4中Pt电还原NO− 2和NO− 3的挥发性产物。它提供了重要的信息，特别是关于瞬态行为的信息。在所示的电位范围内，亚硝酸盐逐步还原为NO（在0.6-1 V，rhe）、N2 O（0.2-0.8 V）和N2（0.1-0.6 V）。硝酸盐还原在低得多的电位（E<0.4V）下进行，同时产生N2 O和N2，但不产生NO，并在延长的极化时间后终止。
On-line mass spectroscopy was applied to detect volatile products of the electroreduction of NO−2and NO−3at Pt in 0.5M H2SO4. It provided important information, particularly on the transient behavior. Nitrite is reduced stepwise to NO (at 0.6–1 V,rhe), N2O (0.2–0.8 V) and N2(0.1–0.6 V) in the potential ranges indicated. On the other hand, nitrate reduction takes place at much lower potentials (E<0.4 V), simultaneously yielding N2O and N2but no NO, and terminated at prolonged polarization time.