Reactivity Towards Ozone of 2-Hydroxypyridine in Aqueous Solution

摘要

The process of ozonation of 2-hydroxypyridine in aqueous solution at pH = 5 is studied in a semi-batch reactor. The evolution of the system is followed by means of instrumental and chemical analyses performed on samples withdrawn from the reactor at different reaction times. In order to distinguish between radical and direct ozonation mechanisms, some experiments are performed with the addition of radical scavenger (tert.-BuOH) to the reacting solution. A reaction scheme is given for explaining the formation of the main intermediates and products.