Microporous Framework (Nb, Fe)‐Silicate with Much Potential to Remove Rare‐Earth Elements from Waters | Zendy

Lin Zhi | Zendy; Tavares Daniela | Zendy; Pereira Eduarda | Zendy; Rocha João | Zendy

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Microporous Framework (Nb, Fe)‐Silicate with Much Potential to Remove Rare‐Earth Elements from Waters

Author(s) -

Lin Zhi,

Tavares Daniela,

Pereira Eduarda,

Rocha João

Publication year - 2022

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.202202435

Subject(s) - silicate , microporous material , hydrothermal circulation , aqueous solution , ion exchange , inorganic chemistry , ion , rare earth element , chemical engineering , chemistry , materials science , rare earth , mineralogy , organic chemistry , engineering

Nanoparticles of a new small‐pore metal silicate formulated as Na 2.9 (Nb 1.55 Fe 0.45 )Si 2 O 10 ⋅ x H 2 O and exhibiting the structure of previously reported Rb 2 (Nb 2 O 4 )(Si 2 O 6 ) ⋅ H 2 O have been synthesized under mild hydrothermal conditions. Replacement of the bulky Rb + by smaller Na + ions was accomplished by stabilizing the framework structure via partial occupancy of the Nb 5+ sites by Fe 3+ ions. Exploratory ion‐exchange assays evidence the considerable potential of this new silicate to remove rare‐earth elements from aqueous solutions.

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