The left-over or'spent'sodium aluminate solution is then recycled.
2.
The alumina is converted in sodium aluminate.
3.
Before storage, the catalyst can be washed with distilled water at ambient temperature to remove remaining sodium aluminate.
4.
Sodium beta alumina is a non-stoichiometric sodium aluminate known for its rapid transport of Na + ions.
5.
In the second stage sodium hydroxide solution is added, which dissolves the sodium aluminate, leaving the impurities as a solid residue.
6.
An improved process using a combination of aluminium chloride and sodium aluminate with sodium acetate prepared " in situ " has been patented:
7.
It is one of a number of aluminium acetates and can be prepared in a reaction of sodium aluminate ( NaAlO 2 ) with acetic acid.
8.
Theoretically all of the aluminium / acetate / hydroxide salts can be prepared from aluminium hydroxide or sodium aluminate and acetic acid, but formation of the triacetate only occurs in the absence of water.
9.
Usually, bauxite ore is heated in a pressure vessel along with a sodium hydroxide solution at a temperature of 150 to 200 �C . At these temperatures, the aluminium is dissolved as sodium aluminate ( the Bayer process ).
10.
The major other uses of aluminium hydroxide is as a feedstock for the manufacture of other aluminium compounds : specialty calcined aluminas, aluminium sulfate, polyaluminium chloride, aluminium chloride, zeolites, sodium aluminate, activated alumina, aluminium nitrate.
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