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Title: IN SITU MAGIC ANGLE SPINNING NMR FOR STUDYING GEOLOGICAL CO(2) SEQUESTRATION

Abstract

Geological carbon sequestration (GCS) is one of the most promising ways of mitigating atmospheric greenhouse gases (1-3). Mineral carbonation reactions are potentially important to the long-term sealing effectiveness of caprock but remain poorly predictable, particularly in low-water supercritical CO2 (scCO2)-dominated environments where the chemistry has not been adequately explored. In situ probes that provide molecular-level information is desirable for investigating mechanisms and rates of GCS mineral carbonation reactions. MAS-NMR is a powerful tool for obtaining detailed molecular structure and dynamics information of a system regardless whether the system is in a solid, a liquid, a gaseous, or a supercritical state, or a mixture thereof (4,5). However, MAS NMR under scCO2 conditions has never been realized due to the tremendous technical difficulties of achieving and maintaining high pressure within a fast spinning MAS rotor (6,7), where non-metal materials must be used. In this work, we report development of a unique high pressure MAS NMR capability, and its application to mineral carbonation chemistry in scCO2 under geologically relevant temperatures and pressures.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1026617
Report Number(s):
PNNL-SA-77039
39924; TRN: US201120%%945
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Conference
Resource Relation:
Conference: 241st National Meeting and Exposition of the American Chemical Society, March 27-31, 2011, Anaheim, California, 241:245-Fuel
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; CARBON DIOXIDE; CARBON SEQUESTRATION; CHEMISTRY; GREENHOUSE GASES; MIXTURES; MOLECULAR STRUCTURE; NONMETALS; PROBES; ROTORS; SUPERCRITICAL STATE; Environmental Molecular Sciences Laboratory

Citation Formats

Hoyt, David W, Turcu, Romulus VF, Sears, Jesse A, Rosso, Kevin M, Burton, Sarah D, Kwak, Ja Hun, Felmy, Andrew R, and Hu, Jian Z. IN SITU MAGIC ANGLE SPINNING NMR FOR STUDYING GEOLOGICAL CO(2) SEQUESTRATION. United States: N. p., 2011. Web.
Hoyt, David W, Turcu, Romulus VF, Sears, Jesse A, Rosso, Kevin M, Burton, Sarah D, Kwak, Ja Hun, Felmy, Andrew R, & Hu, Jian Z. IN SITU MAGIC ANGLE SPINNING NMR FOR STUDYING GEOLOGICAL CO(2) SEQUESTRATION. United States.
Hoyt, David W, Turcu, Romulus VF, Sears, Jesse A, Rosso, Kevin M, Burton, Sarah D, Kwak, Ja Hun, Felmy, Andrew R, and Hu, Jian Z. Sun . "IN SITU MAGIC ANGLE SPINNING NMR FOR STUDYING GEOLOGICAL CO(2) SEQUESTRATION". United States.
@article{osti_1026617,
title = {IN SITU MAGIC ANGLE SPINNING NMR FOR STUDYING GEOLOGICAL CO(2) SEQUESTRATION},
author = {Hoyt, David W and Turcu, Romulus VF and Sears, Jesse A and Rosso, Kevin M and Burton, Sarah D and Kwak, Ja Hun and Felmy, Andrew R and Hu, Jian Z},
abstractNote = {Geological carbon sequestration (GCS) is one of the most promising ways of mitigating atmospheric greenhouse gases (1-3). Mineral carbonation reactions are potentially important to the long-term sealing effectiveness of caprock but remain poorly predictable, particularly in low-water supercritical CO2 (scCO2)-dominated environments where the chemistry has not been adequately explored. In situ probes that provide molecular-level information is desirable for investigating mechanisms and rates of GCS mineral carbonation reactions. MAS-NMR is a powerful tool for obtaining detailed molecular structure and dynamics information of a system regardless whether the system is in a solid, a liquid, a gaseous, or a supercritical state, or a mixture thereof (4,5). However, MAS NMR under scCO2 conditions has never been realized due to the tremendous technical difficulties of achieving and maintaining high pressure within a fast spinning MAS rotor (6,7), where non-metal materials must be used. In this work, we report development of a unique high pressure MAS NMR capability, and its application to mineral carbonation chemistry in scCO2 under geologically relevant temperatures and pressures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {3}
}

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