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Updated: Jul 25, 2025

Reliable Mechanochemistry: Protocols for Reproducible Outcomes of Neat and Liquid Assisted Ball-mill Grinding Experiments
Published on: January 23, 2018
Mechanochemical Reactions from Individual Impacts to Global Transformation Kinetics
Maria Carta1, Leonarda Vugrin2, Goran Miletić2
1Department of Mechanical, Chemical and Materials Engineering, CSGI research unit, University of Cagliari, via Marengo 2, 09123, Cagliari, Italy.
Abstract:
Typically induced by the mechanical processing of powders in ball mills, mechanochemical transformations are considered to result from the application of mechanical force to solid reactants. However, the undeniable deep connection between the dynamic compaction of powders during impacts and the overall transformation degree has yet to be disclosed. In the present work, we show that the square planar bis(dibenzoylmethanato)NiII coordination compound undergoes trimerization when its powder experiences even a single ball impact. Based on systematic experiments with individual ball impacts and analysis by Raman spectroscopy, we provide here quantitative mapping of the transformation in the powder compact and deduce bulk reaction kinetics from multiple individual impacts.
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