| Fe2(SO4)3/γ-Al2O3固体超强酸的Mössbauer谱研究 |
| Mössbauer Spectrum Study of Fe2(SO4)3/γ-Al2O3 Solid Superacid |
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| 摘要: 采用浸渍法制备了一系列Fe2(SO4)3/γ-A12O3型固体超强酸样品,用Mössbauer谱和XRD研究了不同温度处理对样品中铁组分的存在状态及稳定性的影响,结果表明,随Fe2(SO4)3含量的变化,铁组分可以在γ-A12O3表面以单层分散和无定形形式存在;当温度≥600℃时 |
| 关键词: Mössbauer谱 固体超强酸 Fe2(SO4)3/γ-Al2O3 |
| 基金项目: 国家博士点专项基金资助项目(No.98028434) |
| Abstract: A series of Fe2(SO4)3/γ-Al2O3 solid superacid samples have been pr epared by wet impregnation method.Mssbauer spectroscopy and X-ray diffraction(XRD)were employed to study the effects of the calcination temperature on the s tates and stabilization of iron species in Fe2(SO4)3/γ-Al2O3.The results showed that the iron species could exist as monolayer and amorphous states at the calcination temperature lower than 500℃,but the amorphous Fe2(SO4)3transformed to crystalline Fe2(SO4)3 as the temperature increased to 600℃.The formed crystalline Fe2(SO4)3 could be stable even if the calcination temperature was up to 700℃. |
| Keywords: Mössbauer spectrum solid superacid Fe2(SO4)3/γ-Al2O3 |
| 投稿时间：2001-06-07 修订日期：2001-09-10 |
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| 吴勇,马刚,胡玉海,张庆,董林,胡征,陈懿.Fe2(SO4)3/γ-Al2O3固体超强酸的Mössbauer谱研究[J].无机化学学报,2001,17(6):859-864. |
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