Study of two catalyst configurations under microwave irradiation for the selective benzaldehyde production over Co-ZSM-11 and Fe-ZSM-11

FEDERICO AZZOLINA JURY, ISABELLE POLAERT, LILIANA B. PIERELLA, LIONEL ESTEL

INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING

BERKELEY ELECTRONIC PRESS

Lugar: Berlin; Año: 2014 p. 1 - 11

1542-6580

Intensification process by the use of microwave heating was investigated by testing two catalyst configurations on the selective styrene oxidation for benzaldehyde production. The oxidation reaction was studied over Co-ZSM-11 and Fe-ZSM-11 catalysts. Their catalytic activity was evaluated by using these catalysts in two different forms: compacted pellets and fine particles. Thus, two reaction systems were studied under microwave: a recirculating batch liquid through a fixed bed system comprising the compact catalyst pellets and a batch system with fine particles in suspension. Despite a better microwave interaction with the catalyst in the pellet form, the fixed bed configuration did not lead to a significantintensification of the process. With fine particles, the catalytic activity was higher since the styrene oxidation was able to occur without significant internal diffusional resistance of the reagents towards the active acid sites of the zeolite structure.