Capturing an amorphous BaSO4 intermediate precursor to barite

Cristina Ruiz-Agudo; David McDonogh; Jonathan Thomas Avaro; David Joshua Schupp; Denis Gebauer

doi:10.1039/C9CE01555H

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Capturing an amorphous BaSO₄ intermediate precursor to barite†

Cristina Ruiz-Agudo,

*^a David McDonogh,^b Jonathan Thomas Avaro,^a David Joshua Schupp^a and Denis Gebauer*^b

Author affiliations

* Corresponding authors

^a Department of Chemistry, University of Konstanz, Konstanz, Germany
E-mail: cristina.ruiz-agudo@uni-konstanz.de

^b Institute of Inorganic Chemistry, Leibniz University of Hannover, 30167 Hannover, Germany
E-mail: gebauer@acc.uni-hannover.de

Abstract

The work presented here investigates the early stages of barium sulfate crystallization from aqueous solutions. By monitoring free-barium activity during the crystallization, we identified a metastable BaSO₄ phase that precedes barite formation. Ex situ investigations provide direct, unambiguous experimental evidence of an amorphous BaSO₄ phase in an additive-free scenario.

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Article information

DOI: https://doi.org/10.1039/C9CE01555H
Article type: Communication
Submitted: 02 Oct 2019
Accepted: 07 Jan 2020
First published: 13 Jan 2020

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CrystEngComm, 2020,22, 1310-1313

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Capturing an amorphous BaSO₄ intermediate precursor to barite

C. Ruiz-Agudo, D. McDonogh, J. T. Avaro, D. J. Schupp and D. Gebauer, CrystEngComm, 2020, 22, 1310 DOI: 10.1039/C9CE01555H

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