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MCM-41 supported heteropoly acids(HPAs) catalysts were synthesized,characterized and their catalytic activity was evaluated in an aza-Michael addition reaction between nitroolefins and benzotriazole in water at room temperature.50 wt% PW/MCM-41 showed the highest activity(up to 96% yield).The catalyst was used in six consecutive experiments without obvious loss of activity, confirming the success of the anchoring process and the catalyst stability.
MCM-41 supported heteropoly acids (HPAs) catalysts were synthesized, characterized and their catalytic activity was as an anza-Michael addition reaction between nitroolefins and benzotriazole in water at room temperature. 50 wt% PW / MCM-41 showed the highest activity ( up to 96% yield). The catalyst was used in six consecutive experiments without obvious loss of activity, confirming the success of the anchoring process and the catalyst stability.