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US 10,207,934 B2Granted
Synthesis and crystal structure of iron zeolitic frameworks
AssigneeUniversity of South Carolina
InventorsHans-Conrad zur Loye, William Michael Chance
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Abstract
Iron-based crystal structures including FeO4 tetrahedrally coordinated in three dimensions in a framework analogous to a zeolite. The structures having the general formula AyB8Fe12O24(O/OH)6.xH2O in which A is Na, K, Cs, Rb or a combination thereof and B is an alkaline earth element or a combination of alkaline earth elements.
Claims20
An iron-based crystal structure having the formula:
- B8(Fe12-zDzO24)Ay(O/OH)6.xH2O
- In which:
- A is Na, K, Cs, or a combination thereof;
- 1≤y≤6;
- B comprises Be, Mg, Ca, Sr, Ba, or a combination thereof;
- 0≤x≤25;
- D is an element that can take on tetrahedral coordination;
- and
- 0≤z≤about 6.
6 more elements
An iron-based crystal structure having the formula:
- AyB8Fe12O24(O/OH)6.xH2O
- In which
- A is Na, K, Cs, or a combination thereof;
- 1≤y≤6;
- B comprises Be, Mg, Ca, Sr, Ba, or a combination thereof;
- and
- 0≤x≤25.
4 more elements
The iron-based crystal structure of 13, wherein 1≤x≤10.
Dependencies are inferred from the claim text.