Probing the Local Structure of Na in NaNO3-Promoted, MgO-Based CO2 Sorbents via X-ray Absorption Spectroscopy
Margarita Rekhtina, Aram Bugaev, Matthew T Dunstan, Alessandro Dal Pozzo, Manouchehr Nadjafi, Camelia Borca, Thomas Huthwelker, Paula M Abdala, Christoph R Müller · 2023
Read Probing the Local Structure of Na in NaNO3-Promoted, MgO-Based CO2 Sorbents via X-ray Absorption Spectroscopy by Margarita Rekhtina, Aram Bugaev, Matthew T Dunstan, Alessandro Dal Pozzo, Manouchehr Nadjafi, Camelia Borca, Thomas Huthwelker, Paula M Abdala, Christoph R Müller (2023) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-10720340.txt.
Description
Powders that soak up carbon dioxide and then release it on reheating could help clean gas streams, and salt-treated magnesia is one strong candidate. Margarita Rekhtina and co-authors probe where the salt's sodium atoms sit inside the powder, in a 2023 study. They use X-ray methods that read the close neighbors of a single kind of atom.
In the fresh powder, sodium sits much as it does in the pure salt. Once the powder takes up the gas, sodium's surroundings shift, likely near fresh carbonate patches or trapped ion pairs in the cooled melt. Heat the powder to drive the gas off, and the old pattern comes back. Watching the salt melt in place during uptake gave spectra no one had caught before, opening a new way to study this class of cleaners.
Catalog record
| CREATOR | Margarita Rekhtina, Aram Bugaev, Matthew T Dunstan, Alessandro Dal Pozzo, Manouchehr Nadjafi, Camelia Borca, Thomas Huthwelker, Paula M Abdala, Christoph R Müller |
|---|---|
| YEAR | 2023 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 40 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |