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化学学报
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化学学报 ›› 2006, Vol. 64 ›› Issue (21): 2178-2184. 上一篇    下一篇

研究论文

二氧化钛柱撑层状氧化锰微孔材料的合成及表征

唐秀花, 刘宗怀*, 张成孝, 周青   

  1. (陕西师范大学化学与材料科学学院 西安 710062)
  • 投稿日期:2005-12-22 修回日期:2006-06-13 发布日期:2006-11-14
  • 通讯作者: 刘宗怀

Synthesis and Characterization of TiO2-pillared Microporous Manganese Oxide

TANG Xiu-Hua; LIU Zong-Huai*; ZHANG Cheng-Xiao; ZHOU Qing   

  1. (School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062)
  • Received:2005-12-22 Revised:2006-06-13 Published:2006-11-14
  • Contact: LIU Zong-Huai

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885

被引次数

21 | 2

Na型层状锰氧化物于0.1 mol/L HCl 溶液中离子交换制得前驱体H型层状锰氧化物. H型层状锰氧化物在十二胺乙醇溶液中反应得到层间距为2.62 nm的中间产物——十二胺插入的层状锰氧化物, 该中间产物在异丙醇钛和乙醇的混合溶液中溶剂热处理得到层间距为1.24 nm的钛酸柱撑层状锰氧化物. 在300 ℃条件下经2 h焙烧得到二氧化钛铸型氧化锰微孔材料. 应用XRD, DSC-TGA, SEM, TEM, IR, 氮气吸附实验及元素分析进行了不同阶段所得试样的分析表征. 结果表明十二胺分子在锰氧层间的最大插入量为2.2 mmol/g, 异丙醇钛分子的置换插入生成了组成为Mn7.00Ti1.74O23.3(C12H25NH2)0.52•1.93H2O的铸型层状锰氧化物. 300 ℃焙烧处理所得二氧化钛铸型氧化锰微孔材料的比表面积为140 m2/g.

关键词: 层状锰氧化物, 微孔材料, 插入反应, 二氧化钛

H-type layered manganese oxide was obtained by the ion exchange from its precursor Na-type material. A TiO2-pillared microporous manganese oxide with relative high porosity was successfully synthesized by preliminarily expanding the interlayer of H-type layered manganese oxide using dodecylamine, followed by titanate pillaring in a mixed solution of titanium isopropoxide and ethanol and subsequent heat treatment at 300 ℃ for 2 h. The materials obtained at different stages were characterized by XRD, DSC-TGA, SEM, TEM, IR, N2 adsorption-desorption and elemental analyses. TiO2-pillared microporous layered manganese oxide had a BET surface area of 140 m2/g with a galley height of about 0.95 nm between layers.

Key words: layered manganese oxide, microporous material, intercalation reaction, titanium dioxide