A flow-through, elevated-temperature and -pressure NMR apparatus for in-situ CO2 sequestration studies

Erika L Sesti; Jinlei Cui; Sophia E Hayes; Mark S Conradi

doi:10.1016/j.jmr.2017.08.005

A flow-through, elevated-temperature and -pressure NMR apparatus for in-situ CO₂ sequestration studies

J Magn Reson. 2017 Sep:282:136-141. doi: 10.1016/j.jmr.2017.08.005. Epub 2017 Aug 12.

Authors

Erika L Sesti¹, Jinlei Cui², Sophia E Hayes³, Mark S Conradi⁴

Affiliations

¹ Department of Chemistry, Washington University in St. Louis, St. Louis, MO 63130, United States. Electronic address: elsesti@wustl.edu.
² Department of Chemistry, Washington University in St. Louis, St. Louis, MO 63130, United States. Electronic address: cuijinlei@wustl.edu.
³ Department of Chemistry, Washington University in St. Louis, St. Louis, MO 63130, United States. Electronic address: hayes@wustl.edu.
⁴ Department of Physics, Washington University in St. Louis, St. Louis, MO 63130, United States; ABQMR, 2301 Yale Blvd SE, Suite C2, Albuquerque, NM 87106, United States. Electronic address: msc@wuphys.wustl.edu.

PMID: 28822304
DOI: 10.1016/j.jmr.2017.08.005

Abstract

We report an apparatus for in-situ nuclear magnetic resonance (NMR) studies of chemical reactions of dissolved ¹³CO₂ with minerals (rock or powder) under continuous flow. The operating range of the apparatus is 18-150°C and 1-140bar. A flow pump is used to circulate a CO₂-water solution, with a heated mixing vessel where CO₂ gas equilibrates with a water solution. The NMR probe is built around a strong zirconia ceramic vessel, with o-ring sealed connections; the mineral is contained inside. The horizontal orientation of the zirconia vessels allows use of a radio frequency (rf) solenoid for improved spin sensitivity.

Keywords: CO(2) reactions; High-pressure; High-temperature; In-situ monitoring; NMR probe.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.