Microwave irradiation has been used to prepare AI, Fe-pillared clays from a natural Tunisian smcctitc from the E1 Hicha deposit （province of Gabes）. Chemical analysis, XRD spectra and surface properties evidenced th...Microwave irradiation has been used to prepare AI, Fe-pillared clays from a natural Tunisian smcctitc from the E1 Hicha deposit （province of Gabes）. Chemical analysis, XRD spectra and surface properties evidenced the success of pillaring process. The obtained solids present higher surthce area and pore volume than conventionally prepared A1-Fe pillared clays. The main advantages of the microwave methodology are the considerable reduction of the synthesis time and the consumption of water. The microwave-derived AI-Fe pillared clays have been tested tbr catalytic wet air oxidation （CWAO） of phenol in a stirred tank at 160℃ and 20 bar of pure oxygen pressure. These materials are efficient for CWAO of phenol and are highly stable despite the severe operating conditions （acidic media, high pressure, high temperature）. The catalyst deactivation was also significantly hindered when compared to conventionally prepared clays. A1-Fe pillared clays prepared by microwave methodology are promising as catalysts for CWAO industrial water treatment.展开更多
文摘Microwave irradiation has been used to prepare AI, Fe-pillared clays from a natural Tunisian smcctitc from the E1 Hicha deposit （province of Gabes）. Chemical analysis, XRD spectra and surface properties evidenced the success of pillaring process. The obtained solids present higher surthce area and pore volume than conventionally prepared A1-Fe pillared clays. The main advantages of the microwave methodology are the considerable reduction of the synthesis time and the consumption of water. The microwave-derived AI-Fe pillared clays have been tested tbr catalytic wet air oxidation （CWAO） of phenol in a stirred tank at 160℃ and 20 bar of pure oxygen pressure. These materials are efficient for CWAO of phenol and are highly stable despite the severe operating conditions （acidic media, high pressure, high temperature）. The catalyst deactivation was also significantly hindered when compared to conventionally prepared clays. A1-Fe pillared clays prepared by microwave methodology are promising as catalysts for CWAO industrial water treatment.
