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Updated: Jul 5, 2025

Facile Preparation of Ultrafine Aluminum Hydroxide Particles with or without Mesoporous MCM-41 in Ambient Environments
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Facile Preparation of Ultrafine Aluminum Hydroxide Particles with or without Mesoporous MCM-41 in Ambient Environments

Published on: May 11, 2017

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易斯酸性基酸盐:合成,27Al MQ/MAS NMR和DFT计算的27Al NMR参数

Martin Kejik1, Jiri Brus2, Lukas Jeremias3

  • 1Department of Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, Brno CZ-61137, Czech Republic.

Inorganic chemistry
|January 25, 2024
PubMed
概括

这项研究详细介绍了新型多孔酸催化剂的制造,并确定了用于增强易斯酸催化剂的特定物种. 研究人员确定了中心对称性和催化活性之间的相关性.

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Lewis Acids and Bases

This lesson delves into Lewis acids and bases in the context of the octet rule for electron-deficient compounds. Here, the concept is discussed, emphasizing the group 13 elements like boron or aluminium. Since group 13 elements possess three valence electrons, they form trivalent compounds with a sextet of electrons and a vacant orbital for the central atom. Consequently, these electron-deficient compounds accept electrons from other species to complete their octet in a chemical reaction. They...
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Acid halides are reduced to alcohols in the presence of a strong reducing agent like lithium aluminum hydride.
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Nitriles are reduced to amines in the presence of strong reducing agents like lithium aluminum hydride through a typical nucleophilic acyl substitution. The reaction requires two equivalents of the reducing agent. The reducing agent acts as a source of hydride ions.
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