aluminate
Definition
Noun: A chemical compound formed from alumina (aluminum oxide, Al₂O₃) and a metallic oxide. Aluminates are salts containing aluminum and oxygen, often in a complex anion.
Usage
Aluminate is a technical term used primarily in chemistry, materials science, and industrial contexts. It refers to a specific class of inorganic compounds.
Examples
- Sodium aluminate is used in water treatment.
- Calcium aluminate is a key component in certain cements.
- The mineral spinel is a magnesium aluminate.
Advanced Usage
- In Cement Chemistry: Compounds like tricalcium aluminate (3CaO·Al₂O₃) are critical phases in Portland cement, influencing setting time and strength development.
- In Geochemistry: Many rock-forming minerals, such as feldspars, are aluminosilicates, which are structurally related to aluminates.
Variants and Related Words
- Alumina (n): Aluminum oxide (Al₂O₃), the precursor compound for aluminates.
- Aluminosilicate (n): A more complex compound containing aluminum, silicon, and oxygen, common in clays and zeolites.
- Alkali aluminate (n): An aluminate where the metallic oxide is from an alkali metal (e.g., sodium, potassium).
Synonyms
- There are no direct common synonyms. Descriptively, one might use "aluminum-oxygen compound" or specify the exact compound, such as "sodium aluminum oxide."
Related Phrases/Idioms
This is a precise scientific term; it is not used in idiomatic expressions or phrasal verbs.
Noun
-
a compound of alumina and a metallic oxide
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