Control over crystallization of CaCO3 micro-particles by a novel CO2SM

Bo Guo; Tianxiang Zhao; Feng Sha; Fei Zhang; Qiang Li; Jianbin Zhang

doi:10.1039/C5CE01435B

Control over crystallization of CaCO₃ micro-particles by a novel CO₂SM

Bo Guo,^a Tianxiang Zhao,^a Feng Sha,^a Fei Zhang,^a Qiang Li^a and Jianbin Zhang*^a

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* Corresponding authors

^a College of Chemical Engineering, Inner Mongolia University of Technology, Huhhot 010051, China
E-mail: tadzhang@pku.edu.cn
Fax: +86 471 6575722
Tel: +86 471 6575722

Abstract

Different morphologies of CaCO₃ micro-particles through a hydrothermal reaction between Ca(OH)₂ saturated limpid solution and a new CO₂-storage material (CO₂SM), which was obtained from an equimolar system 1,2-ethylenediamine (EDA) + 1,2-ethylene glycol (EG) uptaking CO₂, were presented without any additives. It's worth noting that the morphologies of the CaCO₃ precipitates could be controlled as uniform sheaf-like (pure calcite) at the lower CO₂SM concentration (0.6 g L⁻¹) and homogeneous spherical-like (pure vaterite) at the higher CO₂SM concentration (40 g L⁻¹) for 1 h at 100 °C, in which the released EDA and/or EG from CO₂SM had unexpected functions as surfactants. After the precipitation of CaCO₃ crystals in 40 g L⁻¹ CO₂SM solution, the filtered solution could not only be reused to absorb CO₂, but also to prepare the same crystal phase CaCO₃ micro-particles repeatedly with the addition of Ca(OH)₂. As a result, this novel synthesis process of CaCO₃ micro-particles with CO₂SM offers an alternative way for the comprehensive utilization of CO₂.

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Publication details

The article was received on 21 Jul 2015, accepted on 14 Sep 2015 and first published on 28 Sep 2015

Article type: Paper

DOI: 10.1039/C5CE01435B

Citation: CrystEngComm, 2015,17, 7896-7904

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Control over crystallization of CaCO₃ micro-particles by a novel CO₂SM

B. Guo, T. Zhao, F. Sha, F. Zhang, Q. Li and J. Zhang, CrystEngComm, 2015, 17, 7896
DOI: 10.1039/C5CE01435B
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CrystEngComm

Control over crystallization of CaCO₃ micro-particles by a novel CO₂SM

Abstract

Supplementary files

Publication details

Control over crystallization of CaCO₃ micro-particles by a novel CO₂SM

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