- Definition of (NH4)2AlO2
(NH4)2AlO2, also known as Alumini diamonium, is a white solid. Its English name is Diammonium aluminium oxide. It consists of aluminium, hydrogen, oxygen, and nitrogen atoms. The atomic mass of this compound is 142.0825. Its molecular structure includes 2 NH4+ ions, 1 Al3+ ion, and 2 O2- ions. The NH4+ ion is made up of 1 nitrogen atom and 4 hydrogen atoms. The Al3+ ion is an aluminium atom that has lost 3 electrons. The O2- ion is an oxygen atom that has gained 2 electrons.
- Properties of (NH4)2AlO2
2.1 Physical properties: (NH4)2AlO2 is a solid at standard conditions, white in color, odorless and has a neutral pH.
2.2 Chemical properties: Alumini diamonium does not easily participate in common chemical reactions. However, when heated, it decomposes into NH3, H2O and Al2O3.
- Common chemical equations:
Since Alumini diamonium does not usually partake in chemical reactions, there are no examples of metal, acid, non-metal, or salt reactions.
- Synthesis of (NH4)2AlO2
4.1 Laboratory synthesis: The synthesis of Alumini diamonium is rather complex and not practiced in school labs.
4.2 Industrial synthesis: Alumini diamonium is synthesized through the ion exchange process between aluminium hydroxide and ammonia.