Issue 26, 2017

Composition inversion to form calcium carbonate mixtures


Composition inversion takes place in equimolar solid mixtures of sodium or ammonium carbonate and calcium chloride with respect to the combination of anions and cations leading to the corresponding chloride and calcite in complete conversion. The transformation takes place spontaneously under a variety of different situations, even in a powdery mixture resting under ambient conditions. Powder X-ray diffraction data and scanning electron microscopy micrographs are presented to describe the course of the reaction and to characterize the reaction products. The incomplete reaction in the interspace between two compressed tablets of pure starting materials leads to an electric potential due to the presence of uncompensated charges.

Graphical abstract: Composition inversion to form calcium carbonate mixtures

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Article information

Article type
01 Mar 2017
20 Apr 2017
First published
02 May 2017
This article is Open Access
Creative Commons BY license

CrystEngComm, 2017,19, 3573-3583

Composition inversion to form calcium carbonate mixtures

E. Peh, C. Liedel, A. Taubert and K. Tauer, CrystEngComm, 2017, 19, 3573 DOI: 10.1039/C7CE00433H

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