低温和有限的水分活度揭示了一条通往菱镁矿——非晶态碳酸镁的途径。
Low temperature and limited water activity reveal a pathway to magnesite amorphous magnesium carbonate.
作者信息
Mergelsberg Sebastian T, Kerisit Sebastien N, Ilton Eugene S, Qafoku Odeta, Thompson Christopher J, Loring John S
机构信息
Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA.
Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA.
出版信息
Chem Commun (Camb). 2020 Oct 13;56(81):12154-12157. doi: 10.1039/d0cc04907g.
Forsterite carbonated in thin H2O films to magnesite via amorphous magnesium carbonate during reaction with H2O-bearing liquid CO2 at 25 °C. This novel reaction pathway contrasts with previous studies that were carried out at higher H2O activity and temperature, where more highly hydrated nesquehonite was the metastable intermediate.
在25°C下与含H2O的液态CO2反应时，镁橄榄石在薄水膜中通过无定形碳酸镁碳酸化形成菱镁矿。这种新的反应途径与之前在更高水活性和温度下进行的研究形成对比，在那些研究中，水合程度更高的三水碳镁石是亚稳中间体。
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