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Sophia Hayes

Macalester College
In Situ NMR of CO2 Converting to Mineral Carbonates: Implications for Carbon Sequestration
In our labs, we have developed high-pressure high-temperature probes that are useful for getting a window into underground geosequestration reactions of CO2. Strategies are proposed to store CO2 underground, and we are able to observe via NMR as the CO2 turns to carbonate (usually MgCO3 or CaCO3). These can be "dry" rocks or minerals but also in slurries of briny water. We show results on different metastable intermediates and examine other interesting features such as pH and composition gradients.
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