化学学报 ›› 1998, Vol. 56 ›› Issue (2): 160-165. 上一篇    下一篇

研究论文

氧化硅柱层状铁钛酸盐的合成和表征

侯文华;王南平;郭灿雄;马军;颜其洁;傅献彩;陈静   

  1. 南京大学化学系亚微观固态化学研究所;南京化工大学应用化学系
  • 发布日期:1998-02-15

Syntheses and characterization of silica-pillared layered ferrititanates

HOU WENHUA;WANG NANPING;GUO CANXIONG;MA JUN;YAN QIJIE;FU XIANCAI;CHEN JING   

  • Published:1998-02-15

通过先将K0.8Fe0.8Ti1.2O4与n-C6H13NH3Cl反应得到正己铵离子柱撑的层状铁钛酸盐, 然后再与NH2(CH2)3Si(OC2H5)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, Mossbauer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。

关键词: 红外分光光度法, X射线衍射分析, 氧化硅, 氧化铁, 氧化钛, 氧化钾, 示差扫描量热法, 热重量分析, 穆斯堡尔谱法, 江苏省自然科学基金

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 98.0m^2/g and 163.8m^2/g, and average pore size of 1.82 nm and 1.90 nm, respectively.

Key words: INFRARED SPECTROPHOTOMETRY, X-RAY DIFFRACTION ANALYSIS, SILICON OXIDE, IRON OXIDE, TITANIUM OXIDE, POTASSIUM OXIDE, DIFFERENTIAL SCANNING CALORIMETRY, THERMOGRAVIMETRY, MOSSBAUER SPECTROMETRY

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