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Utilization of a CO2 Storage Material: Shape-Controlled Preparation of CaCO3 Microspheres

1
Key Laboratory of Coal-based CO2 Capture and Geological Storage, China University of Mining and Technology, Xuzhou 221008, China
2
Inner Mongolia Engineering Research Center for CO2 Capture and Utilization, Hohhot 010051, China
3
Inner Mongolia Internet Information Office, Hohhot 010070, China
*
Author to whom correspondence should be addressed.
Crystals 2019, 9(8), 433; https://doi.org/10.3390/cryst9080433
Received: 30 July 2019 / Revised: 13 August 2019 / Accepted: 16 August 2019 / Published: 20 August 2019
(This article belongs to the Section Crystalline Materials)
Homogeneous CaCO3 microspheres were controllably synthesized via a simple hydrothermal method without using extraneous additives by Ca(OH)2 saturated solution reacted with CO2 storage material (CO2SM), which was obtained by absorbing CO2 gas in a system containing equimolar ethylenediamine (EDA) and polyethylene glycol 400 (PEG). Specifically, homogeneous pure vaterite spheres were obtained by using 160 g/L CO2SM solution at 100 °C and a reaction time of two hours. It is noteworthy that the EDA and PEG, which are released from CO2SM, have dual functions as a CO2 absorber and crystal regulator in the process of controlling the crystallization of CaCO3 crystals. View Full-Text
Keywords: CaCO3 microspheres; controllable synthesis; CO2 storage material; CO2 utilization CaCO3 microspheres; controllable synthesis; CO2 storage material; CO2 utilization
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Meng, X.; Zhao, L.; Guo, H.; Sha, F.; Shi, H.; Wu, Z.; Zhang, J. Utilization of a CO2 Storage Material: Shape-Controlled Preparation of CaCO3 Microspheres. Crystals 2019, 9, 433.

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