Solution NMR probe for the study of CO2 sequestration at elevated pressure and temperature

J. Diefenbacher; J. Piwowarczyk; R. F. Marzke

doi:10.1063/1.3608446

Solution NMR probe for the study of CO₂ sequestration at elevated pressure and temperature

J. Diefenbacher, J. Piwowarczyk, R. F. Marzke

Physics

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Nuclear magnetic resonance is widely employed in studies of chemical reactions and molecular motions at moderate pressure and temperature, but for CO₂ solutions under supercritical conditions encountered in geological or mineral sequestration (pressures to 150 atm and temperatures to 150 °C) a specialized variable-temperature probe is required. The critical component of such a probe is its pressure chamber, and our working design is presented along with examples of its use in ¹³C NMR measurements of bicarbonate and dissolved CO₂ fractions as functions of time, following initial pressurization to 70 atm. Also shown are final, steady-state values of these fractions as functions of temperature from 50 to 125 °C at 70 atm.

Original language	English (US)
Article number	076107
Journal	Review of Scientific Instruments
Volume	82
Issue number	7
DOIs	https://doi.org/10.1063/1.3608446
State	Published - Jul 2011

ASJC Scopus subject areas

Instrumentation

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10.1063/1.3608446

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title = "Solution NMR probe for the study of CO2 sequestration at elevated pressure and temperature",

abstract = "Nuclear magnetic resonance is widely employed in studies of chemical reactions and molecular motions at moderate pressure and temperature, but for CO2 solutions under supercritical conditions encountered in geological or mineral sequestration (pressures to 150 atm and temperatures to 150 °C) a specialized variable-temperature probe is required. The critical component of such a probe is its pressure chamber, and our working design is presented along with examples of its use in 13C NMR measurements of bicarbonate and dissolved CO2 fractions as functions of time, following initial pressurization to 70 atm. Also shown are final, steady-state values of these fractions as functions of temperature from 50 to 125 °C at 70 atm.",

author = "J. Diefenbacher and J. Piwowarczyk and Marzke, {R. F.}",

note = "Funding Information: This work was supported by the National Energy Technology Laboratory of U.S. Department of Energy (DOE), via Contracts 1F-01262 and 4F-01641. Discussions and collaborations with A. Chizmeshya and G. Wolf provided initial motivation and background for the study by NMR of dissolved CO at high pressures and temperatures. 2 ",

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AB - Nuclear magnetic resonance is widely employed in studies of chemical reactions and molecular motions at moderate pressure and temperature, but for CO2 solutions under supercritical conditions encountered in geological or mineral sequestration (pressures to 150 atm and temperatures to 150 °C) a specialized variable-temperature probe is required. The critical component of such a probe is its pressure chamber, and our working design is presented along with examples of its use in 13C NMR measurements of bicarbonate and dissolved CO2 fractions as functions of time, following initial pressurization to 70 atm. Also shown are final, steady-state values of these fractions as functions of temperature from 50 to 125 °C at 70 atm.

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Solution NMR probe for the study of CO₂ sequestration at elevated pressure and temperature

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