It is an electrolytic process using pure gold for the cathode ( or titanium as a starter cathode ) and chloroauric acid ( gold chloride-hydrochloric acid ) as the electrolyte; this is made by dissolving gold with chlorine gas in the presence of hydrochloric acid.
12.
When highest purity gold is not required, refiners often utilize the Miller process due to its relative ease, quicker turnaround times, and because it does not tie up the large amount of gold in the form of chloroauric acid which the Wohlwill process permanently requires for the electrolyte.
13.
Gold nanostructures can be made from chloroauric acid in a two-phase redox reaction whereby metallic clusters are amassed through the simultaneous attachment of self-assembled thiol monolayers on the growing nuclei . is transferred from aqueous solution to toluene using tetraoctylammonium bromide where it is then reduced with aqueous sodium borohydride in the presence of a thiol.
14.
For industrial gold production Wohlwill process is necessary for highest purity gold applications, and when lower purity gold is required refiners often utilize the Miller process due to its relative ease, quicker turnaround times, and because it does not require a large inventory of gold, in the form of chloroauric acid, on site at all times.
