Novel KF-TiO catalysts for oxidative dehydrogenation of isobutane

详细信息    查看全文

• 作者：Huang ; Yan ; Cao ; Yaan ; Wang ; Guojia ; Cortes Corberan ; Vicente
• 关键词：Oxidative dehydrogenation ; isobutane ; KF ; TiO2 ; oxyfluoro ; compound
• 刊名：Reaction Kinetics and Catalysis Letters
• 出版年：2002
• 出版时间：2002
• 年：2002
• 卷：75
• 期：1
• 页码：31-37
• 全文大小：51 KB

文摘

A novel type of catalysts, KF-TiO$\_2$, efficient for the oxidative dehydrogenation (ODH) of isobutane is presented. The effect of KF content and calcination temperature was studied. In the reaction conditions explored, the best performance (73 % selectivity to isobutene at 10.5 % conversion of isobutane) was observed over a catalyst with KF/TiO$\_2$ = 0.2 (mol/mol). The surface properties of the catalysts were investigated by SPS (Surface Photo-voltage Spectroscopy) and XPS. The promotion effect of KF in the catalysts can be attributed to the formation of an oxyfluoro-compound, K$\_2$Ti$\_4$O$\_8$F$\_2$.