ONLINE MASS-SPECTROSCOPY APPLIED TO ELECTROREDUCTION OF NITRITE AND NITRATE IONS AT POROUS PT ELECTRODE IN SULFURIC-ACID-SOLUTIONS

被引：74

作者：

NISHIMURA, K ^{[1
]}

MACHIDA, K ^{[1
]}

ENYO, M ^{[1
]}

机构：

[1] HOKKAIDO UNIV, CATALYSIS RES CTR, KITA KU, SAPPORO, HOKKAIDO 060, JAPAN

来源：

ELECTROCHIMICA ACTA | 1991年 / 36卷 / 5-6期

关键词：

ONLINE MASS SPECTROSCOPY; ELECTROREDUCTION; NITRATE ION; NITRITE ION; PT ELECTRODE;

D O I：

10.1016/0013-4686(91)85288-I

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

On-line mass spectroscopy was applied to detect volatile products of the electroreduction of NO2- and NO3- at Pt in 0.5 M 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 N2 but no NO, and terminated at prolonged polarization time.

引用

页码：877 / 880

页数：4

共 17 条

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