In-situ infrared spectroscopy as a non-invasive technique to study carbon sequestration at high pressure and high temperature

Greg A Mutch, James A. Anderson, Rebecca Walker, Giuseppina Cerrato, Sara Morandi, Lorenza Operti, David Vega-Maza* (Corresponding Author)

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)
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Storage of carbon dioxide in geological formations involves changes in wettability to the host formation during injection and ultimately the formation of inorganic carbonates through mineral trapping. Sequestration locations will be at high pressure and high temperature, thus providing a challenging environment for in-situ study. However, infrared spectroscopy (FTIR) with the use of photons is not limited in temperature or pressure and therefore is applicable to study chemical changes to minerals occurring during carbon sequestration. Through the commission of a high pressure/high temperature in-situ FTIR cell and the subsequent spectroscopic following of carbonation reactions in synthesised silicate mineral analogues, we document fundamental chemical changes occurring at the nanoscale during carbon storage. Speciation, coordination of carbonate ions to the surface of silicate mineral analogues and changes in surface hydroxyl coverage are observed and discussed, in the context of CO2 injection and dissolution/mineralisation reactions of reservoir silicate minerals.
Original languageEnglish
Pages (from-to)126-135
Number of pages10
JournalInternational journal of greenhouse gas control
Early online date5 Jun 2016
Publication statusPublished - Aug 2016

Bibliographical note

We would like to thank EPSRC for a Doctoral Training Grant (G.A.M) and the Erasmus programme for supporting the study visit to Turin (R.W). We would also like to thank Dr. Federico Cesano for SEM/EDX measurements and for fruitful discussion. Dr. Jo Duncan is thanked for his tremendous insight during XRD interpretation.


  • carbon capture and storage
  • in-situ infrared spectroscopy
  • supercritical carbon dioxide
  • geological carbon sequestration
  • sandstone reservoir
  • silicate surface chemistry
  • wet supercritical CO2
  • amorphous silica
  • surface characterizaton
  • forsterite carbonation
  • geological media
  • dioxide
  • water
  • storage
  • montmorillonite
  • dissolution


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