THE OSCILLATORY BELOUSOV-ZHABOTINSKY REACTION WITH FLAVONES IN BATCH SYSTEMS USING AQUEOUS DMF MIXED MEDIUM

Oscillatory systems of the Belousov-Zhabotinsky type with flavones as substrates are described for the first time. Since quercetin and morin are water insoluble, a mixed medium containing DMF and water was used with one of the three catalysts Ce(III), ferroin, or Mn(II). The oscillatory behaviour of a water-soluble substrate (gallic acid) was studied in nine different aqueous-organic mixed media as well as in pure aqueous medium in the bromate-Ce(III) system. The results obtained from a catalyzed system with quercetin or morin as the substrate in an aqueous-organic mixed medium are in agreement with the accepted (FKN) mechanism for an aqueous system.