摘要
通过先将K_(0.8)Fe_(0.8)Ti_(1.2)O_4与n-C_6H_(13)NH_3Cl反应得到正己铵离子柱撑的层状铁钛酸盐,然后再与NH_2(CH_2)_3Si(OC_2H_5)_3反应,最后将所得产物在空气中焙烧可得到氧化硅柱层状铁钛酸盐.采用XRD,IR,TG/DTA,M(?)ssbauer谱,X荧光分析以及比表面和孔径大小分布测定等手段对所得新材料进行了表征.结果表明:所得二个氧化硅柱层状铁钛酸盐均具有较高的热稳定性(>650℃)和比表面(98.0m^2/g和163.8m^2/g),平均孔径为1.82nm和1.90nm.
Two silica -pillared layered ferrititanates were synthesized by first preswelling K0.8Fe0.8Ti1.2O4 with n -C6H13NH3Cl, then reacting with NH2(CH2)3Si(OC2H5)3 and finally calcinating the resultant product in air to remove the interlayered organics. XRD, IR,DTA/TG, Mossbauer spectroscopy, X - ray fluorimetry, specific surface area and pore size distribution measurements were used to characterize the obtained new materials. The results show that these two silica - pillared layered ferrititanates have high thermal stability beyond 650℃, BET specific surface area of 98. 0 m2/g and 163. 8 m2/g, and average pore size of 1. 82 nm and 1. 90 nm, respectively.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1998年第2期160-165,共6页
Acta Chimica Sinica
基金
国家(29573108)
江苏省自然科学基金
关键词
层状
铁钛酸盐
氧化硅
柱撑
layered ferrititanate, pillor, silica.
