| 铁铝复合柱撑粘土的制备、酸性与表征(II) |
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| 引用本文： | 赵东源,杨亚书,郭燮贤,陈恒荣,辛勤,王国甲.铁铝复合柱撑粘土的制备、酸性与表征(II)[J].物理化学学报,1993,9(3):336-344. |
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| 作者姓名： | 赵东源 杨亚书 郭燮贤 陈恒荣 辛勤 王国甲 |
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| 作者单位： | Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023; Department of Chemistry, Jilin University, Changchun 130023 |
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| 摘 要： | 用UV-DRS、Mossbauer谱、XPS、程序升温还原(TPR)等技术对新型铁铝复合柱撑粘土(FeAl-PILC)进行了表征, 用IR、吡啶吸附IR、正丁胺吸附-TPD手段, 考察了其表面羟基和酸性. 结果表明, 层间柱铁铝聚合物中铁-铝间存在着相互作用. Fe/Al比<0.5时, 相互作用强, 铁的分散度大, 难还原. Fe/Al≥0.5时, 相互作用较弱, 易还原, 焙烧后易生成α-Fe_2O_3s. 随Fe/Al的增加, 其表面酸性逐渐减弱.
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| 关 键 词： | 柱撑粘土 表征 酸性 相互作用 |
| 收稿时间： | 1991-11-02 |
| 修稿时间： | 1992-05-18 |
Preparation,Characterization and Surface Acidity of Hydroxy-Fe-Al Pillared Clays Containing Mixed-matal Complexes(II) |
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| Zhao Dongyuan Yang Yashu Guo Xiexian Chen Henrong Xin Qin.Preparation,Characterization and Surface Acidity of Hydroxy-Fe-Al Pillared Clays Containing Mixed-matal Complexes(II)[J].Acta Physico-Chimica Sinica,1993,9(3):336-344. |
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| Authors: | Zhao Dongyuan Yang Yashu Guo Xiexian Chen Henrong Xin Qin |
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| Institution: | Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023; Department of Chemistry, Jilin University, Changchun 130023 |
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| Abstract: | Hydroxy-Fe-Al Pillared Clays (FeAl-PILC)containing mixed-metal complexes with various Fe/Al ratios were characterized by UV-DRS, Mossbauer spectrascopy, XPS, TPR measurement. The surface hydroxyl and acidity were determined by IR, Py-IR and TPD. The results have shown that iron in the pillars relatively stronger interacts with alumina in the pillars than with silica of interlayer. The interaction is stronger in FeAl-PILC with Fe/Al ratio<0.5 than that with Fo/Al ratio>0.5. The surface acidity is decreased with increasing of Fe/Al ratio. |
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| Keywords: | Pillared clay Characterization Acidity Interaction |
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