How to Safely Create PolyAluminum Chloride from Aluminum Chloride?

[crazyd151]

How can I create poly aluminum chloride out of aluminum chloride? I think I need to make it into hydrochloiric acid first but to mix it safely with aluminum I need to some how do change my aluminum into something else or it may explode due to the hydrogen.

 

[chemisttree]

I've seen alumina or aluminum trihydroxide used with hydrochloric acid. That gives you great control over the stoichiometry.