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Updated: Sep 11, 2025

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具有可调节的暴露接口的非传统相位金属异构子结构,用于高效的合酸盐电还原到氨的电还原

Yangbo Ma1,2, Liang Guo1,3, Liang Chang4

  • 1Department of Chemistry, City University of Hong Kong, Hong Kong, China.

Nature communications
|August 16, 2025
PubMed
概括

研究人员开发了一种新的4H/fcc Au-Cu珠子手纳米结构催化剂. 这种催化剂在将酸盐电还原转化为氨方面表现出色,为高效的化学合成提供了一条新的途径.

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Nitrous acid is a relatively weak and unstable acid prepared in situ by the reaction of sodium nitrite and cold, dilute hydrochloric acid. In an acidic solution, the nitrous acid undergoes protonation when it loses water to form a nitrosonium ion—an electrophile. Nitrous acid reacts with primary amines to give diazonium salts. The reaction is called diazotization of primary amines.
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Nitrous acid and nitric acids are two types of acids containing nitrogen, among which nitrous acid is weaker than nitric acid. Nitrous acid with a pKa value of 3.37 ionizes in water to give a nitrite ion and the hydronium ion.
The nitrous acid is unstable. Hence, it is formed in situ from a solution of sodium nitrite and cold aqueous acids such as hydrochloric or sulfuric acid. In an acidic solution, the –OH group of nitrous acid undergoes protonation to give oxonium ion, followed by...
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