Effect of zeolite structure on oxidative dehydrogenation of light paraffins
Iron modified zeolites prepared on the base of commercial zeolites of different structures (ZSM-5, zeolite Y and mordenite) were tested in the reaction of ethane and propane oxidative dehydrogenation in the presence of N2O as an oxidant. The applied catalysts were calcined at 600oC (ZSM-5, zeolite Y and mordenite) or at 900oC (ZSM-5). The catalytic activity of iron modified zeolites was significantly influenced by the nature of zeolite matrix. The best catalytic performance in the reaction under study was found for iron modified zeolites of MFI structure, whereas Fe-Y and Fe-mordenite catalyzed mainly total oxidation towards COx. The effect of zeolite structure on selective oxidation of alkanes was studied by in situ FT-IR spectroscopy. The FT-IR spectroscopy revealed some information about intermediate species formed during selective and unselective pathway of alkane oxidation and it also confirmed the formation of oxygenates.
A. Held J. Kowalska A. Tuchorska K. Nowi ska
Department of Chemistry, A. Mickiewicz University, Grunwaldzka 6, 60-780 Pozna , Poland
国际会议
北京
英文
2007-08-12（万方平台首次上网日期，不代表论文的发表时间）