Porous Clay Heterostructures from Al_<13> Intercalated Montmorillonites : Synthesis and Characterization(Activated Clays and Porous Materials,Proceedings of the 13^<th> International Clay Conference)

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概要

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• For the first time, we have used the intercalated montmorillonite with aluminium polyoxocations (Al_<13>) as precursor for the synthesis of porous clay heterostructures (Al-PCHs) materials. They are obtained by simple addition of tetraethylorthosilicate (TEOS) and neutral amines with different lengths (C8 to C12) at a molar ratio of Al_<13>-clay/amine/TEOS close to 1/20/150. The obtained Al-PCHs exhibited higher surface area of 880m^2/g and pore volume of 0.85mL/g. The X-ray diffraction, and ^<29>Si MAS NMR indicated the polymerization of silica species in the interlayer gallery, and two different octahedral aluminium conformations detected by ^<27>Al MAS NMR, compared to the starting raw clay. Infrared spectroscopy of adsorbed pyridine suggests the presence of both Bronsted and Lewis acid sites up to 300℃. The thermal desorption of cyclohexylamine was used as further probe to monitor the acidity of the different materials.

• 日本粘土学会の論文

著者

• Rives Vicente

  Department Of Inorganic Chemistry University Of Salamanca

• Kooli Fethi

  Institute Of Chemical And Engineering Sciences

• Martin Cristina

  Department Of Inorganic Chemistry University Of Salamanca

• WEIRONG QUEK

  Institute of Chemical and Engineering Sciences

• HIAN PNG

  Institute of Chemical and Engineering Sciences

• ALSHAHATEET SOLHE

  Institute of Chemical and Engineering Sciences

• CARRIAZO DANIEL

  Department of Inorganic Chemistry, University of Salamanca

• Carriazo Daniel

  Department Of Inorganic Chemistry University Of Salamanca

関連論文

• Effect of Hexadecyltrimethylammonium (C16TMA) Counterions on the Intercalation Properties of Different Montmorillonites(Clay-Organic Intercalation Compounds,Proceedings of the 13^ International Clay Conference)
• Zirconium Nitrate Solution as Pillaring Agent of Montmorillonite Clays(Activated Clays and Porous Materials,Proceedings of the 13^ International Clay Conference)
• Porous Clay Heterostructures from Al_ Intercalated Montmorillonites : Synthesis and Characterization(Activated Clays and Porous Materials,Proceedings of the 13^ International Clay Conference)
• Comparative Studies on the Synthesis of Na-magadiite, Na-kenyaite and RUB-18 Phases(Synthesis of Clays,Proceedings of the 13^ International Clay Conference)

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