Activation energy of magnesite (MgCO 3 ) precipitation: recent insights from olivine carbonation studies
Journal Article
·
· Environmental Science. Advances
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA
We present two new activation energies for magnesite precipitation during forsteritic olivine (Mg2–xFexSiO4; 0.18 ≤ x ≤ 0.26) carbonation in high-pressure carbon dioxide. These new activation energies of 89 ± 6 and 85 ± 1 kJ mol–1 are consistent with the literature for magnesite precipitation in aqueous media and extend the temperature range to encompass 90 °C to 50 °C. These insights will help improve understanding of mineral transformation kinetics in the subsurface, including carbon storage in mafic-ultramafic environments, and aid in the development of carbon dioxide removal (CDR) and net negative-emissions technologies.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1876673
- Alternate ID(s):
- OSTI ID: 1906844
- Report Number(s):
- PNNL-SA-174595; ESANEB
- Journal Information:
- Environmental Science. Advances, Journal Name: Environmental Science. Advances Vol. 1 Journal Issue: 4; ISSN 2754-7000
- Publisher:
- Royal Society of Chemistry (RSC)Copyright Statement
- Country of Publication:
- United Kingdom
- Language:
- English
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