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化学学报
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化学学报 ›› 2000, Vol. 58 ›› Issue (10): 1259-1263. 上一篇    下一篇

研究论文

大比表面负载氧化铁的氧化硅层柱磷酸锆制备和 催化性能研究

赫南;唐颐;王文瀚;华伟明;乐英红;高滋   

  1. 复旦大学化学系.上海(200433)
  • 发布日期:2000-10-15

A new method for preparing iron oxide supported on silica pillared zirconium phosphates with high surface areas

He Nan;Tang Yi;Wang Wenhan;Hua Weiming;Le Yinghong;Gao Zi   

  1. Fudan Univ, Dept Chem.Shanghai(200433)
  • Published:2000-10-15

PDF

382

被引次数

20 | 1

提出了一种以氧化硅层柱磷酸锆(SiO~2-ZrP)的前驱体，氨丙基硅酸酯嵌入磷酸锆(APS-ZrP)为载体制备负载氧化铁的氧化硅层术磷酸锆的新方法。与传统方法相比，新方法制得的样品具有较大的比表面和孔容。X射线粉末衍射(XRD)和程序升温还原(TPR)的结果表明采用新方法有利于氧化铁在载体表面的高度分散，分散阈值为0.25gFe~2O~3/g(SiO~2-ZrP)，远超过直接以SiO~2-ZrP为载体浸渍草酸铁铵的传统方法得到样品。同时，用新方法制得的氧化铁催化剂表现了较高的乙苯脱氢活性，是一类值得研究的催化材料。

关键词: 氧化铁, 氧化硅, 磷酸锆, 乙苯, 催化活性

A new method is proposed to prepare iron oxide supported on silica pillared phosphates with high surface areas by impregnating iron species on the precursor of silica pillared zirconium phosphates(APS- ZrP). Compared with samples made by conventional method, samples prepared by the new method have much larger surface areas and pore volumes. The results of X-ray diffraction (XRD) and temperature programmed reduction (TPR) indicate that the samples obtained by this new method have better Fe~2O~3 dispersion than those obtained by conventional method and the dispersion threshold is 0.25 Fe~2O~3/g (SiO~2-ZrP). The pillared materials obtained by the new method show good activities in dehydrogenation of ethylbenzene.

Key words: IRON OXIDE, SILICON OXIDE, ZIRCONIUM PHOSPHATE, ETHYLBENZENE, CATALYTIC ACTIVITY

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