AUTOXIDATION OF HYDROXYLAMINE IN ALKALINE SOLUTIONS
AUTOXIDATION OF HYDROXYLAMINE IN ALKALINE SOLUTIONS
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DOI：
10.1039/j19710000164
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发表时间：
1971-01-01
期刊：
影响因子：
--
通讯作者：
NICKLIN, HG
中科院分区：
文献类型：
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作者：
HUGHES, MN;NICKLIN, HG
羟胺在碱水中的自氧化是通过氧对去质子化物质的攻击而进行的，产生可进一步氧化为过氧亚硝酸盐的硝基离子。在金属隔离剂（edta）的存在下，过亚硝酸盐离子是稳定的，尽管异构化成硝酸盐的速度很慢。少量亚硝酸盐也形成。pH值的降低导致气态产物的生成增加。在催化金属离子存在下，亚硝酸盐是主要产物，羟胺主要通过与过亚硝酸盐反应消耗。铜（II）离子浓度的增加导致氧化亚氮产量的增加。提出了氧攻击羟胺的机制，并讨论了N-和o -取代羟胺的一些其他自氧化研究。
The autoxidation of hydroxylamine in aqueous alkali is shown to proceed by attack of oxygen on a deprotonated species yielding nitroxyl ion which can be oxidised further to peroxonitrite. In the presence of a metal sequestering agent (edta) the peroxonitrite ion is stabilised, although isomerising slowly to nitrate. A little nitrite is also formed. Decrease in pH leads to increasing production of gaseous products. In the presence of catalytic metal ions, nitrite is the main product, the hydroxylamine being largely consumed via reaction with peroxonitrite. Increasing concentration of copper(II) ions resulted in increasing production of nitrous oxide. A mechanism is presented for oxygen attack on hydroxylamine and a number of other autoxidation studies on N- and O-substituted hydroxylamines discussed.