Acta Chimica Sinica ›› 2003, Vol. 61 ›› Issue (12): 1976-1979. Previous Articles     Next Articles

Original Articles

高比表面TiO_2柱层状HLaNb_2O_7的制备和表征

郭宪吉;侯文华;陆春良;颜其洁   

  1. 南京大学化学化工学院介观材料科学实验室
  • 出版日期:2003-12-15 发布日期:2003-12-15

Synthesis and Characterization of Titania-pillared Layered HLaNb_2O_7 High Specific Surface Area

Guo Xianji;Hou Wenhua;Lu Chunliang;Yan Qijie   

  1. Laboratory of Mesoscopic Materials Science, College of Chemistry and Chemical Engineering, Nanjing University
  • Online:2003-12-15 Published:2003-12-15

Ti( F ) polycation-intercalated layered HLaNbaO? has been prepared by the intercalation of n-hexylamine into the interlayera of HLaNb_2O_7 followed by replacing hexylammonium with n-dodecylammonium and further with Ti (IV) polycation species. Titania-pillared layered HLaNb_2O_7 was obtained by calcining the Ti(IV) polycation- intercalated HLaNb_2O_7 at 450 ℃ in air. XRD, FTIR, TEM and BET (Brunauer-Emmett-TeUer) techniques were used to characterize the resultant. The results showed that the titania-pillared HLaNb2O7 had an interlayer distance of 1.61 nm (450 V.), a specific surface area of 132 m~2·g~(-1) and a narrow pore-size distribution centered at 3.3 nm.

Key words: TITANIUM OXIDE, layered lanthanum niobic acid, ION EXCHANGE PROCESS, ROASTING, XPS, FT, IR, TEM, PORE SIZE DISTRIBUTION, CHARACTERIZATION

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