NaAlO2
Sodium aluminate · Aluminate of soda
Sodium aluminate is an inorganic chemical compound that serves as an effective source of aluminum hydroxide in various industrial processes. It is widely utilized for its ability to accelerate the setting of concrete and to assist in the purification of water.
Key Properties
Cross-validated computational properties for Sodium aluminate, aggregated across 3 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Reported Structures
Lowest-energy structures reported for NaAlO2, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| Pna21 (No. 33) | orthorhombic | 3.80 | 0.0000 | -6.675 | 2.79 |
| R-3m (No. 166) | trigonal | 4.73 | 0.0650 | -6.610 | 3.49 |
| Pna21 (No. 33) | Orthorhombic | — | — | — | 2.67 |
| Pna21 (No. 33) | Orthorhombic | — | — | — | 2.81 |
| Pna21 (No. 33) | Orthorhombic | — | — | — | 2.76 |
| R-3m (No. 166) | Trigonal | — | — | — | 3.49 |
| R-3m (No. 166) | Trigonal | — | — | — | 3.70 |
| R-3m (No. 166) | Trigonal | — | — | — | 3.62 |
| R-3m (No. 166) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
| Pna21 (No. 33) | — | — | — | — | — |
Synthesis Routes
Literature-extracted synthesis procedures targeting NaAlO2.
Applications
Where Sodium aluminate is used.
Frequently Asked Questions
Common questions about Sodium aluminate, answered from cross-validated data.
What is NaAlO2?
Sodium aluminate is an inorganic chemical compound that serves as an effective source of aluminum hydroxide in various industrial processes. It is widely utilized for its ability to accelerate the setting of concrete and to assist in the purification of water.
What is NaAlO2 used for?
What is the band gap of NaAlO2?
Is NaAlO2 a metal, semiconductor, or insulator?
Is NaAlO2 thermodynamically stable?
What is the crystal structure of NaAlO2?
What is the density of NaAlO2?
How many polymorphs of NaAlO2 are known?
How is NaAlO2 synthesized?
What elements does NaAlO2 contain?
Where does the data for NaAlO2 come from?
Related Compounds
Other Perovskite Oxides in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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