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Macroscale Precipitation Kinetics: Towards Complex Precipitate Structure Design

Abstract

Producing self-assembled inorganic precipitate micro and macro structures with tailored properties may pave the way for new possibilities in e.g. materials science and pharmaceutical industry. One set of important parameters to maintain appropriate control on the yield falls in the frame of reaction kinetics which affects the possible coupling between hydrodynamics and chemical reactions under flow conditions. In this study we present a spectrophotometric method to experimentally determine the characteristic time scale of precipitation reactions. It is also shown that the nickel - oxalate model system -despite of the fast chemical complexation equilibria taking place- can be kinetically described by either the Classical Nucleation Theory or the classical homogeneous kinetics approach. The applicability of our results is illustrated via injection experiments intrinsically exhibiting coupling between chemistry and hydrodynamics. Therefore, we suggest that easy-to-handle power law functions may be applied to characterize precipitation kinetics in flow systems.

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Publication details

The article was received on 20 Mar 2018, accepted on 17 May 2018 and first published on 17 May 2018


Article type: Paper
DOI: 10.1039/C8CP01798K
Citation: Phys. Chem. Chem. Phys., 2018, Accepted Manuscript
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    Macroscale Precipitation Kinetics: Towards Complex Precipitate Structure Design

    N. P. Das, B. Muller, A. Toth, D. Horvath and G. Schuszter, Phys. Chem. Chem. Phys., 2018, Accepted Manuscript , DOI: 10.1039/C8CP01798K

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