School of Chemistry and Chemical Engineering, Queen's University, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, Northern Ireland, United Kingdom.
Chemistry Department, Faculty of Science - Qena, South Valley University, Qena, 83523, Egypt.
Sci Rep. 2017 Jun 15;7(1):3593. doi: 10.1038/s41598-017-03839-x.
A novel green preparation route to prepare nano-mesoporous γ-AlO from AlCl.6HO derived from aluminum foil waste and designated as ACFL550 is demonstrated, which showed higher surface area, larger pore volume, stronger acidity and higher surface area compared to γ-AlO that is produced from the commercial AlCl precursor, AC550. The produced crystalline AlCl.6HO and Al(NO).9HO in the first stage of the preparation method were characterized by single-crystal XRD, giving two crystal structures, a trigonal (R-3c) and monoclinic (P2/c) structure, respectively. EDX analysis showed that ACFL550 had half the chlorine content (Cl%) relative to AC550, which makes ACFL550 a promising catalyst in acid-catalysed reactions. Pure and modified ACFL550 and AC550 were applied in acid-catalysed reactions, the dehydration of methanol to dimethyl ether and the total methane oxidation reactions, respectively. It was found that ACFL550 showed higher catalytic activity than AC550. This work opens doors for the preparation of highly active and well-structured nano-mesoporous alumina catalysts/supports from aluminum foil waste and demonstrates its application in acid-catalysed reactions.
一种新颖的绿色制备路线，用于从废铝箔制备纳米介孔γ-AlO，前驱体为 AlCl·6HO，该前驱体命名为 ACFL550。与商业 AlCl 前驱体 AC550 制备的γ-AlO 相比，ACFL550 具有更高的比表面积、更大的孔体积、更强的酸性和更高的比表面积。制备方法第一阶段生成的结晶 AlCl·6HO 和 Al(NO)·9HO 分别采用单晶 XRD 进行了表征，得到了两种晶体结构，分别为三角（R-3c）和单斜（P2/c）结构。EDX 分析表明，ACFL550 的氯含量（Cl%）相对 AC550 减少了一半，这使得 ACFL550 成为酸催化反应中有前途的催化剂。纯的和改性的 ACFL550 和 AC550 分别应用于酸催化反应，即甲醇脱水制二甲醚和总甲烷氧化反应。结果表明，ACFL550 比 AC550 具有更高的催化活性。这项工作为从废铝箔制备高活性和结构良好的纳米介孔氧化铝催化剂/载体开辟了道路，并展示了其在酸催化反应中的应用。
