路易斯酸
催化作用
布朗斯特德-洛瑞酸碱理论
热液循环
溶剂
金属有机骨架
水热合成
化学
傅里叶变换红外光谱
组合化学
材料科学
有机化学
无机化学
化学工程
工程类
吸附
作者
Sergio Rojas‐Buzo,Benjamin Bohigues,Christian W. Lopes,Débora Motta Meira,Mercedes Boronat,Manuel Moliner,Avelino Corma
出处
期刊:Chemical Science
[The Royal Society of Chemistry]
日期:2021-01-01
卷期号:12 (29): 10106-10115
被引量:51
摘要
The Lewis/Brønsted catalytic properties of the Metal-Organic Framework (MOF) nodes can be tuned by simply controlling the solvent employed in the synthetic procedure. In this work, we demonstrate that Hf-MOF-808 can be prepared from a material with a higher amount of Brønsted acid sites, via modulated hydrothermal synthesis, to a material with a higher proportion of unsaturated Hf Lewis acid sites, via modulated solvothermal synthesis. The Lewis/Brønsted acid properties of the resultant metallic clusters have been studied by different characterization techniques, including XAS, FTIR and NMR spectroscopies, combined with a DFT study. The different nature of the Hf-MOF-808 materials allows their application as selective catalysts in different target reactions requiring Lewis, Brønsted or Lewis-Brønsted acid pairs.
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