反应详情

Diosmin/palladium colloidal nanoparticle catalyst is prepared by dissolving 195 mg diosmin in a beaker containing 500 ml DI water at room temperature. With stirring, 300 mg Na2PdCl4 in 30 ml DI water is added and the mixture is vigorously stirred using air agitation. 100 mg NaBH4 in 10 ml DI water is then added to the solution with vigorous air agitation. The solution becomes black indicating reduction of palladium ions to palladium metal and the formation of palladium nanoparticles. The molar ratio of palladium to diosmin is 1:0.3. The solution of the catalyst has a pH from 8 to 9 as measured using an ACCUMET AB 15 pH meter. The beaker containing the aqueous catalyst solution is placed in a 50° C. water bath for 12 hours to test its stability. After 12 hours the solution is observed and no observable precipitate is expected indicating that the catalyst is still stable.

1. stirringthe mixture is vigorously stirred
2. additionThe beaker containing the aqueous catalyst solution
3. customis placed in a 50° C.
4. customfor 12 hours