Platinum | Palladium | Rhodium | Ruthenium | Iridium | |
Automotive | Catalyst to control exhaust emissions Spark plug tips Oxygen sensors in vehicle on-board diagnostic systems |
Catalyst to control exhaust emissions (particularly hydrocarbon control) Oxygen sensors in vehicle on-board diagnostic systems |
Catalyst to control exhaust emissions (essential for NOx control) | – | Alloying agent in spark plug tips |
Chemical | Gauze for catalytic production of nitric acid Process catalyst for producing bulk (PTA) and speciality chemicals (eg silicones) | Catchment gauze to recover platinum and rhodium in nitric acid production Process catalysts | Process catalysts, eg acetic acid, oxo alcohols and rubber products Alloy with platinum in nitric acid production |
Process catalysts, eg production of ammonia (Kellogg process) | Process catalysts, eg production of acetic acid (Cativa process) |
Dental | Hardener in dental alloys | Alloying agent | – | Alloying agent | – |
Electro- chemical |
– | – | – | Coating for anodes in chlorine and caustic soda production Sodium chlorate production |
Coating for anodes in chlorine and caustic soda production Sodium chlorate production Coating for electrode – for electro-galvanising of steel strip |
Electronics | Alloy coating for hard disks to improve storage capacity Thermocouples to monitor temperature in steel, semi-conductor and glass industries |
Conductive paste in multi-layer ceramic chip capacitators Conductive tracks of hybrid integrated circuits Salts for plating processes |
Alloyed with platinum in thermocouples | Resistor pastes for hybrid integrated circuits and chip resistors PMR technology to increase hard disk memory storage |
Fabrication of crucibles for growing rare earth and other crystals (lasers and memory chips) Thermocouples |
Glass | Production of LCD glass Bushings for producing glass fibre Speciality glasses Glass for TVs, monitor and cathode ray tubes Glass substrates for hard disks |
– | Alloyed with platinum in producing LCD glass Alloyed with platinum in bushings |
– | – |
Investment | Small/large bars, coins ETFs |
Coins ETFs |
– | – | – |
Jewellery | Fabrication | Fabrication Alloying agent in platinum jewellery Whitening agent in production of white gold |
Electroplating to give jewellery white finish | Alloying agent in platinum jewellery | Alloying agent in platinum jewellery |
Petroleum | Reforming and isomerisation for upgrading octane quality | Hydrocracking to achieve higher yields | – | – | Alloyed with platinum in reforming catalysts |
Other | Anti-cancer drugs Protective coating on turbine blades Pacemakers and catheters Control of industrial emissions (volatile organic compounds) Magnets |
Control of industrial emissions (volatile organic compounds) | – | – | Alloyed with platinum in pacemakers and catheters |
Fuel cells | Electrode coating in fuel cell stack Fuel-processing catalyst Tailgas burner |
Tailgas burner | Fuel-processing catalyst | Electrode coating in fuel cell stack | – |