Al4O8Zn2
Gahnite-type zinc aluminate · Zinc aluminate spinel, ZnAl2O4
Al4O8Zn2 is a highly stable, insulating spinel oxide used primarily as a durable catalyst and support material in industrial chemical processes.
About Gahnite-type zinc aluminate
Al4O8Zn2 is a robust spinel oxide characterized by its wide-gap insulating electronic structure. As a thermodynamically stable phase located on the convex hull, it exhibits exceptional structural integrity, making it a highly reliable candidate for demanding chemical environments.
This material is widely utilized in catalytic processes where thermal and chemical stability are paramount. Its unique lattice arrangement allows for the fine-tuning of surface properties, which is critical for its role as a catalyst support or active phase in various industrial synthesis reactions.
Key Properties
Cross-validated computational properties for Gahnite-type zinc 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 Al4O8Zn2, 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. |
|---|---|---|---|---|---|
| Fd-3m (No. 227) | cubic | 3.85 | 0.0000 | -7.099 | 4.63 |
| Imma (No. 74) | orthorhombic | 3.03 | 0.1273 | -6.971 | 4.44 |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
Applications
Where Gahnite-type zinc aluminate is used.
Frequently Asked Questions
Common questions about Gahnite-type zinc aluminate, answered from cross-validated data.
What is Al4O8Zn2?
Al4O8Zn2 is a highly stable, insulating spinel oxide used primarily as a durable catalyst and support material in industrial chemical processes.
What is Al4O8Zn2 used for?
What is the band gap of Al4O8Zn2?
Is Al4O8Zn2 a metal, semiconductor, or insulator?
Is Al4O8Zn2 thermodynamically stable?
What is the crystal structure of Al4O8Zn2?
What is the density of Al4O8Zn2?
How many polymorphs of Al4O8Zn2 are known?
What elements does Al4O8Zn2 contain?
Where does the data for Al4O8Zn2 come from?
How It Compares
Within the spinel oxide catalysts class.
Within the diverse class of spinel and transition metal oxides, Al4O8Zn2 stands out for its superior stability compared to more reactive perovskites like LaNiO3 or LaMnO3. While simple oxides like ZnO or Al2O3 serve as foundational building blocks, Al4O8Zn2 integrates the structural benefits of the spinel framework, offering a more complex and durable architecture than binary oxides while maintaining the insulating character typical of stable aluminates like MgAl2O4.
Related Compounds
Other Spinel Oxide Catalysts in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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