Thermal Analysis Of Activated Carbon Loaded With Different Gold Halides (3da928c8-b30d-4d30-946a-b27d0c1b909c)

Activated carbon loaded with gold from different halide solutions has been characterized by thermal analysis techniques. The mechanism of gold uptake by carbon varies from predominately adsorption for gold iodide to predominately reduction for gold chloride. TGA and DT A measurements confirm the existence of adsorbed gold-halide species within the micropore structure of carbon. These results suggest that the ration of reduced; adsorbed gold increases for gold halides in the order Au-I > Au-Br > Au-Cl. In the case of Au-I, TA results for the loaded carbon were compared with pure compounds of 12, AuI and AuI3.