Preparation and Characterization of TiO_2-pillared Layered HNb_3O_8  

作　　者：郭宪吉 侯文华 孔岩 丁维平 范以宁 姚天扬 颜其洁 陈懿 

机构地区：[1]Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University

出　　处：《Chinese Journal of Chemistry》2004年第4期340-343,共4页中国化学（英文版）

基　　金：theNationalNaturalScienceFoundationofChina(Nos.29903005;20173026);973Project(No.2003CB615804)andModernAnalysisCenterofNanjingUniversity.

摘　　要：Oligomeric titanium(IV) cation ([Ti(OH)x(H2O)y]z+)-intercalated niobate was prepared through a stepwise ion-exchange route, in which n-decylamine was employed as a preswelling agent and titanium isopropoxide as tita-nium source. Titania-pillared layered niobic acid was then obtained by calcining oligomeric titanium(IV) cation-intercalated niobate at 450 ℃ in air. Characterization of this pillared material indicated that the material had a porous layered structure with an interlayer distance of 1.38 nm and a BET (Brunauer-Emmett-Teller) surface area of 34 m2·g-1. The layered structure was still retained after the pillared material was heated at 550 ℃.Oligomeric titanium(IV) cation ([Ti(OH)x(H2O)y]z+)-intercalated niobate was prepared through a stepwise ion-exchange route, in which n-decylamine was employed as a preswelling agent and titanium isopropoxide as tita-nium source. Titania-pillared layered niobic acid was then obtained by calcining oligomeric titanium(IV) cation-intercalated niobate at 450 ℃ in air. Characterization of this pillared material indicated that the material had a porous layered structure with an interlayer distance of 1.38 nm and a BET (Brunauer-Emmett-Teller) surface area of 34 m2·g-1. The layered structure was still retained after the pillared material was heated at 550 ℃.

关 键 词：layered HNb_3O_8 TITANIA PILLARING 

分 类 号：O614[理学—无机化学]