Surface acidity of novel mesostructured silicas with framework aluminum obtained by SBA-16 related synthesis

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• 作者：Jean Marcel R. Gallo ; Chiara Bisio ; Leonardo Marchese ; Heloise O. Pastore
• 关键词：[Al]-SBA-16 ; PH-adjusting ; Acid sites ; Mesostructured silica ; Direct synthesis ; ²⁷Al-MAS-NMR ; FTIR ; CO adsorption
• 刊名：Microporous and Mesoporous Materials
• 出版年：2008
• 期刊代码：78_13871811
• 类别：ch
• 出版时间：15 April 2008
• 卷：111
• 期：1-3
• 页码：632-635
• 文件大小：402 K

摘要

A novel SBA-16-related synthesis of mesostructured silica containing framework aluminum is reported here. This material was successfully synthesized using aluminum sulphate and the pH-adjusting method. The structural and porosity properties of this novel material were studied by X-ray diffraction and N₂ adsorption at 77 K. The Al insertion was determined by ²⁷Al-MAS-NMR and the acidity was monitored by infrared spectroscopy of CO adsorption at 100 K.