Nanoscale layered K2Ti4O9 was prepared by solid-state method using nanosca le TiO2 with average particle size of 20 nm as the raw material. The obtained na noscale K2Ti4O9 was further used as the host material for the...Nanoscale layered K2Ti4O9 was prepared by solid-state method using nanosca le TiO2 with average particle size of 20 nm as the raw material. The obtained na noscale K2Ti4O9 was further used as the host material for the preparation of Al2 O3 pillared K2Ti4O9 and the K2Ti4O9 was undergone H+-exchange, alkylamine-pre-ex pansion, Keggin-pillaring and heat-treatment. The products were characterized by XRD, TEM and BET methods. The interlayer distance of K2Ti4O9 was expanded step by step during the pillaring procedure and the Al2O3 pillared H2Ti4O9 with narro w pore-size distribution and high surface area (212.8 m2·g-1) was obtained.展开更多
文摘Nanoscale layered K2Ti4O9 was prepared by solid-state method using nanosca le TiO2 with average particle size of 20 nm as the raw material. The obtained na noscale K2Ti4O9 was further used as the host material for the preparation of Al2 O3 pillared K2Ti4O9 and the K2Ti4O9 was undergone H+-exchange, alkylamine-pre-ex pansion, Keggin-pillaring and heat-treatment. The products were characterized by XRD, TEM and BET methods. The interlayer distance of K2Ti4O9 was expanded step by step during the pillaring procedure and the Al2O3 pillared H2Ti4O9 with narro w pore-size distribution and high surface area (212.8 m2·g-1) was obtained.
