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Title: Anomalously low activation energy of nanoconfined MgCO 3 precipitation

Abstract

In this work, magnesite (MgCO 3) precipitation within the nanoconfined space of adsorbed H 2O films (~5 monolayers) was determined to have an apparent activation energy of only 36 ± 6 kJ mol –1, suggesting that Mg 2+ under nanoconfinement adopts a hydration configuration that mimics that of aqueous Ca 2+, at least energetically, if not also specifically in hydration structure.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3];  [2]; ORCiD logo [2]
  1. Univ. of Wyoming, Laramie, WY (United States)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; Nielson Energy Fellowship; USDOE Office of Science (SC), Biological and Environmental Research (BER)
OSTI Identifier:
1544785
Alternate Identifier(s):
OSTI ID: 1523294
Report Number(s):
PNNL-SA-141004
Journal ID: ISSN 1359-7345; CHCOFS
Grant/Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ChemComm
Additional Journal Information:
Journal Volume: 55; Journal Issue: 48; Journal ID: ISSN 1359-7345
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Miller, Quin R. S., Kaszuba, John P., Schaef, Herbert T., Bowden, Mark E., McGrail, B. Peter, and Rosso, Kevin M. Anomalously low activation energy of nanoconfined MgCO3 precipitation. United States: N. p., 2019. Web. doi:10.1039/c9cc01337g.
Miller, Quin R. S., Kaszuba, John P., Schaef, Herbert T., Bowden, Mark E., McGrail, B. Peter, & Rosso, Kevin M. Anomalously low activation energy of nanoconfined MgCO3 precipitation. United States. https://doi.org/10.1039/c9cc01337g
Miller, Quin R. S., Kaszuba, John P., Schaef, Herbert T., Bowden, Mark E., McGrail, B. Peter, and Rosso, Kevin M. Wed . "Anomalously low activation energy of nanoconfined MgCO3 precipitation". United States. https://doi.org/10.1039/c9cc01337g. https://www.osti.gov/servlets/purl/1544785.
@article{osti_1544785,
title = {Anomalously low activation energy of nanoconfined MgCO3 precipitation},
author = {Miller, Quin R. S. and Kaszuba, John P. and Schaef, Herbert T. and Bowden, Mark E. and McGrail, B. Peter and Rosso, Kevin M.},
abstractNote = {In this work, magnesite (MgCO3) precipitation within the nanoconfined space of adsorbed H2O films (~5 monolayers) was determined to have an apparent activation energy of only 36 ± 6 kJ mol–1, suggesting that Mg2+ under nanoconfinement adopts a hydration configuration that mimics that of aqueous Ca2+, at least energetically, if not also specifically in hydration structure.},
doi = {10.1039/c9cc01337g},
url = {https://www.osti.gov/biblio/1544785}, journal = {ChemComm},
issn = {1359-7345},
number = 48,
volume = 55,
place = {United States},
year = {2019},
month = {5}
}

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Cited by: 2 works
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