Mechanochemical Reactions from Individual Impacts to Global Transformation Kinetics

Author:

Carta Maria1,Vugrin Leonarda2,Miletić Goran2,Kulcsár Marina Juribašić2,Ricci Pier Carlo3,Halasz Ivan2,Delogu Francesco1ORCID

Affiliation:

1. Department of Mechanical Chemical and Materials Engineering CSGI research unit University of Cagliari via Marengo 2 09123 Cagliari Italy

2. Ruđer Bošković Institute Bijenička c. 54 10000 Zagreb Croatia

3. Department of Physics University of Cagliari Cittadella Universitaria SS 554 Bivio Sestu 09042 Monserrato CA Italy

Abstract

AbstractTypically 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.

Funder

Hrvatska Zaklada za Znanost

Publisher

Wiley

Subject

General Medicine

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