Preparation Of Platinum Tetrachloride

Industrial platinum can be produced by dry method from platinum ore, or by-products produced during the production of copper and nickel from copper and nickel sulfide ore as raw materials, which can be produced by wet smelting.

In the wet method, aqua regia is added to the remaining components of the extracted nickel and copper for extraction, filtration, and ammonium chloride is added to the filtrate to react to generate ammonium chloroplatinate precipitation, which is filtered and heated to decompose the ammonium chloroplatinate to produce Get about 99.99% platinum finished product. Or add the ammonium chloroplatinate solution into an electrolytic cell, and conduct electrolysis at a cell voltage of about 1.5 V and a current density of 2 to 3 A/cm3 to obtain a platinum product of about 99.98%.

Place the chloroplatinic acid in a boat in a hard glass tube and slowly increase the temperature from 60°C to 150°C to completely volatilize the water. Continue to heat up to 275-300°C within 2h, keep it for half an hour, and then lower the temperature to 150°C. After the product is taken out and quickly crushed, it is placed in a boat again and heated to 275°C in a stream of chlorine. Keep it warm for half an hour, and put the product into a sealed bottle while it is hot.