| 层柱人工水热合成皂石的制备与表征(英) |
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| 引用本文： | 姚 铭,刘子阳,王凯雄,李彩今,邹永存,孙红杰.层柱人工水热合成皂石的制备与表征(英)[J].无机化学学报,2004,20(8):889-894. |
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| 作者姓名： | 姚 铭 刘子阳 王凯雄 李彩今 邹永存 孙红杰 |
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| 作者单位： | 1. 浙江大学化学系,杭州,310027
2. 吉林大学无机合成与制备化学国家重点实验室,长春,130023 |
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| 基金项目： | 中国石化公司(No.X502034)，国家自然科学基金(No.20247001)资助项目。 |
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| 摘 要： | 利用具有理想皂石结构的人工水热合成蒙皂石为层原料，通过与羟基聚合铝离子（Al13O4(OH)24(H2O)12]7+）交换反应合成得到了一种层柱粘土。实验对于该铝柱皂石进行了粉末XRD，FT-IR和TG-DTA表征。氮气吸附实验说明其高温活化（773K，2 h）产物具有很高的BET比表面（360 m2·g-1）。相对于层柱蒙脱土，层柱皂石显示了更高的催化裂解性能和热稳定性。层柱皂石的异丙苯裂解转化率达到了65%；而层柱蒙脱土的转化率只有4%。这说明层材料的四面体取代对于层柱粘土Br?nsted酸位的形成具有重要的决定作用。氨程序升温脱附实验发现铝柱皂石在350～650 ℃区间具有较强的氨脱附量，表明层柱皂石具有层柱蒙脱土所没有的强酸中心。
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| 关 键 词： | 水热合成 层柱皂石 X射线衍射 热分析 固体核磁铝谱 扫描电镜 |
Synthesis and Characterization of Alumina Pillared Synthetic Saponite |
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| YAO Ming,LIU Zi-Yang,WANG Kai-Xiong,LI Cai-Jin,ZOU Yong-Cun and SUN Hong-Jie.Synthesis and Characterization of Alumina Pillared Synthetic Saponite[J].Chinese Journal of Inorganic Chemistry,2004,20(8):889-894. |
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| Authors: | YAO Ming LIU Zi-Yang WANG Kai-Xiong LI Cai-Jin ZOU Yong-Cun and SUN Hong-Jie |
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| Institution: | Department of Chemistry, Zhejiang University, Hangzhou 310027,Department of Chemistry, Zhejiang University, Hangzhou 310027,Department of Chemistry, Zhejiang University, Hangzhou 310027,Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130023,Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130023 and Department of Chemistry, Zhejiang University, Hangzhou 310027 |
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| Abstract: | Alumina pillared clay was synthesized by a cationic exchange reaction with Al13O4(OH)24(H2O)12]7+ (referred to as Al13) using synthetic smectite with ideal saponite structure as parent material. The obtained pillared saponite was characterized by X-ray powder diffraction, FT-IR and TG-DTA. The pillared materials showed a very high the alumina pillared montmorillonite, the pillared saponite exhibited higher cracking activity and better thermal stability. The cumene conversion was ca. 65% over the pillared saponite by the impulse reaction, while it was only ～4% for the pillared montmorillonite, indicating that the substitutions in the tetrahedral sheets played an important role in the development of Bronsted acidity of the catalyst. By temperature programmed desorption of ammonia (TPDA), pillared saponite showed high strong acidity in the temperature range 350～650℃. |
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| Keywords: | hydrothermal synthesis pillared saponite XRD TG-DTA 27Al solid NMR SEM |
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