Related Experiment Video
Updated: Jun 6, 2026

Light-Induced In Situ Transmission Electron Microscopy for Observation of the Liquid-Soft Matter Interaction
Published on: July 26, 2022
In situ EELS study of dehydration of Al(OH)₃ by electron beam irradiation
1Department of Physics, Arizona State University, Tempe, AZ 85287-1504, USA. nan.jiang@asu.edu
Abstract:
The dehydration of Al(OH)₃ by an electron beam has been investigated using the time-dependent electron energy-loss spectroscopy (EELS) technique. Based on an analysis of low-loss EELS, Al L₂₃ and O K-edge, it is found that the processes are initially induced by the loss of H, followed by sputtering of O, which induce local structural changes. Some of the octahedrally coordinated Al transfer to tetrahedrally coordinated Al. The time-dependent O K-edge shows that the pre-edge peak in the O K-edge of Al(OH)₃ is induced by the formation of unpaired O, rather than an intrinsic feature of the OH bond.
Related Concept Videos
Acid-Catalyzed Dehydration of Alcohols to Alkenes
Preparation of Samples for Electron Microscopy
Dehydration of Aldols to Enones: Acid-Catalyzed Aldol Condensation
Dehydration of Aldols to Enals: Base-Catalyzed Aldol Condensation
E1 Reaction: Kinetics and Mechanism
E2 Reaction: Kinetics and Mechanism
