You should read the paper because they claim to have done it already with robots mixing powdered forms of these chemicals.
From the paper (but read it, there's even pictures):
> Researchers initialized the A-Lab by proposing 58 target materials, which were successfully realized at a rate of >2 new materials per day with minimal human intervention
From the paper (but read it, there's even pictures):
> Researchers initialized the A-Lab by proposing 58 target materials, which were successfully realized at a rate of >2 new materials per day with minimal human intervention