Platinum Metals Rev., 1975, 19, (2), 49
Platinum Catalysts for Odour and Fume Control
Atmospheric pollution by industrial processes is rightly regarded as something which must be eliminated or substantially reduced. At a symposium organised by the Society of Chemical Industry, R. A. Searles of Johnson Matthey Chemicals described how platinum catalyst systems were achieving abatement for three types of air pollution. (Chem. & Ind., 1974 (22, Nov. 16), 895–899).
Odours result when complex organic chemicals are released into the atmosphere and a recent survey showed that catalytic incineration was the most successful means of preventing this. The disposal of waste solvents from processes such as paint drying is essential to avoid potentially explosive situations. Catalytic incineration achieves this and also gives fuel economies. Without preventive measures the production of nitric acid results in the discharge of nitrogen oxides detrimental to life. Reacting these fumes with a fuel over platinum gives harmless nitrogen and water, and by increasing heat recovery results in substantial cost savings.
Highly active catalysts marketed under the registered trade name ‘Honeycat’ have been developed by Johnson Matthey for use in such forms of pollution control.