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Synthesis and characterization of bentonite-based NiO nanoparticles as bi-functional heterogeneous catalyst for

Ehsan Faryabi1, Enayatollah Sheikhhosseini2, Mahdieh Yahyazadehfar1

  • 1Department of Chemistry, Kerman Branch, Islamic Azad University, Kerman, Iran.

Scientific Reports
|September 5, 2024
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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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