Precision Calcination Mechanism of CaCO3 to High‐Porosity Nanoscale CaO CO2 Sorbent Revealed by Direct In Situ Observations

• Published in: Advanced materials interfaces Vol. 11; no. 14
• Main Authors: Martinez, Jenny, Wardini, Jenna L., Zheng, Xueli, Moghimi, Lauren, Rakowsky, Jason, Means, Jonathan, Guo, Huiming, Kuzmenko, Ivan, Ilavsky, Jan, Zhang, Fan, Dholabhai, Pratik P., Dresselhaus‐Marais, Leora, Bowman, William J.
• Format: Journal Article
• Language: English
• Published: Weinheim John Wiley & Sons, Inc 01.05.2024; Wiley-VCH
• Subjects: CaCO3; calcination; Calcium carbonate; Calcium oxide; Carbon dioxide; Carbon sequestration; Crystal defects; Crystallites; Decomposition; Decomposition reactions; Energy storage; in situ synchrotron X‐ray diffraction; in situ transmission electron microscopy; MATERIALS SCIENCE; nanoparticle; Nanoparticles; nanoporosity; Nucleation; Reaction mechanisms; Roasting; sintering; Sintering (powder metallurgy); Sorbents; Temperature control; Temporal resolution; Transmission electron microscopy

Deploying energy storage and carbon capture at scale is hindered by the substantial endothermic penalty of decomposing CaCO3 to CaO and CO2, and the rapid loss of CO2 absorption capacity by CaO sorbent particles due to sintering at the high requisite decomposition temperatures. The decomposition rea...