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Platinum misses out on clean air push for vehicles

With London mayor Sadiq Khan and his Parisian counterpart Anne Hidalgo cracking down on vehicle emissions this spring in the global push for clean air, it should be a boom time for platinum which is used in catalytic converters. But it is not likely to translate into higher demand for the metal. A greater focus on cutting emissions of smog-forming nitrogen oxide (NOx) from diesel car exhausts is driving a switch to treatment systems that use less platinum.