Gas Feed Composition Modulation in Phenol CWAO over Active Carbon.

B. LARRUY; M.ALEJANDRA AYUDE; J. FONT; A. FORTUNY; C. BENGOA; A. FABREGAT; F. STUBER

CHEMICAL ENGINEERING SCIENCE

Elsevier

Año: 2007 vol. 62 p. 5564 - 5566

0009-2509

The long-term stability of active carbon in the CWAO of phenol was investigated in a fixed-bed reactor at steady state operation and different oxygen partial pressures, temperatures, phenol inlet concentrations and gas-liquid flow modes. To further improve the catalyst stability, gas feed composition modulation (air/N2) was tested in the slow mode (large period lengths) to establish in situ oxidation-adsorption cycles. The unsteady operation significantly reduced the active carbon burn-off and performed a higher long-term conversion of phenol. © 2007.