Stable solid and aqueous H2CO3 from CO2 and H2O at high pressure and high temperature
Carbonic acid (H2CO3) forms in small amounts when CO2 dissolves in H2O, yet decomposes rapidly under ambient conditions of temperature and pressure. Despite its fleeting existence, H2CO3 plays an important role in the global carbon cycle and in biological carbonate-containing systems. The short life...
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ftpubmed:oai:pubmedcentral.nih.gov:4728613 2023-05-15T15:52:45+02:00 Stable solid and aqueous H2CO3 from CO2 and H2O at high pressure and high temperature Wang, Hongbo Zeuschner, Janek Eremets, Mikhail Troyan, Ivan Willams, Jonathan 2016-01-27 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4728613/ http://www.ncbi.nlm.nih.gov/pubmed/26813580 https://doi.org/10.1038/srep19902 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4728613/ http://www.ncbi.nlm.nih.gov/pubmed/26813580 http://dx.doi.org/10.1038/srep19902 Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Article Text 2016 ftpubmed https://doi.org/10.1038/srep19902 2016-02-07T01:28:06Z Carbonic acid (H2CO3) forms in small amounts when CO2 dissolves in H2O, yet decomposes rapidly under ambient conditions of temperature and pressure. Despite its fleeting existence, H2CO3 plays an important role in the global carbon cycle and in biological carbonate-containing systems. The short lifetime in water and presumed low concentration under all terrestrial conditions has stifled study of this fundamental species. Here, we have examined CO2/H2O mixtures under conditions of high pressure and high temperature to explore the potential for reaction to H2CO3 inside celestial bodies. We present a novel method to prepare solid H2CO3 by heating CO2/H2O mixtures at high pressure with a CO2 laser. Furthermore, we found that, contrary to present understanding, neutral H2CO3 is a significant component in aqueous CO2 solutions above 2.4 GPa and 110 °C as identified by IR-absorption and Raman spectroscopy. This is highly significant for speciation of deep C–O–H fluids with potential consequences for fluid-carbonate-bearing rock interactions. As conditions inside subduction zones on Earth appear to be most favorable for production of aqueous H2CO3, a role in subduction related phenomena is inferred. Text Carbonic acid PubMed Central (PMC) Scientific Reports 6 1 |
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Article Wang, Hongbo Zeuschner, Janek Eremets, Mikhail Troyan, Ivan Willams, Jonathan Stable solid and aqueous H2CO3 from CO2 and H2O at high pressure and high temperature |
topic_facet |
Article |
description |
Carbonic acid (H2CO3) forms in small amounts when CO2 dissolves in H2O, yet decomposes rapidly under ambient conditions of temperature and pressure. Despite its fleeting existence, H2CO3 plays an important role in the global carbon cycle and in biological carbonate-containing systems. The short lifetime in water and presumed low concentration under all terrestrial conditions has stifled study of this fundamental species. Here, we have examined CO2/H2O mixtures under conditions of high pressure and high temperature to explore the potential for reaction to H2CO3 inside celestial bodies. We present a novel method to prepare solid H2CO3 by heating CO2/H2O mixtures at high pressure with a CO2 laser. Furthermore, we found that, contrary to present understanding, neutral H2CO3 is a significant component in aqueous CO2 solutions above 2.4 GPa and 110 °C as identified by IR-absorption and Raman spectroscopy. This is highly significant for speciation of deep C–O–H fluids with potential consequences for fluid-carbonate-bearing rock interactions. As conditions inside subduction zones on Earth appear to be most favorable for production of aqueous H2CO3, a role in subduction related phenomena is inferred. |
format |
Text |
author |
Wang, Hongbo Zeuschner, Janek Eremets, Mikhail Troyan, Ivan Willams, Jonathan |
author_facet |
Wang, Hongbo Zeuschner, Janek Eremets, Mikhail Troyan, Ivan Willams, Jonathan |
author_sort |
Wang, Hongbo |
title |
Stable solid and aqueous H2CO3 from CO2 and H2O at high pressure and high temperature |
title_short |
Stable solid and aqueous H2CO3 from CO2 and H2O at high pressure and high temperature |
title_full |
Stable solid and aqueous H2CO3 from CO2 and H2O at high pressure and high temperature |
title_fullStr |
Stable solid and aqueous H2CO3 from CO2 and H2O at high pressure and high temperature |
title_full_unstemmed |
Stable solid and aqueous H2CO3 from CO2 and H2O at high pressure and high temperature |
title_sort |
stable solid and aqueous h2co3 from co2 and h2o at high pressure and high temperature |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4728613/ http://www.ncbi.nlm.nih.gov/pubmed/26813580 https://doi.org/10.1038/srep19902 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4728613/ http://www.ncbi.nlm.nih.gov/pubmed/26813580 http://dx.doi.org/10.1038/srep19902 |
op_rights |
Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
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CC-BY |
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https://doi.org/10.1038/srep19902 |
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