The Problem of Toxicity of Gas Engines and their Solutions

DOI : http://dx.doi.org/10.13005/bbra/2193

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One of the reasons constraining the proliferation of engines powered by natural gas, the methane emission is increased. Methane is a hydrocarbon relatively hard oxidation for to use widespread practice of neutralisation of the fulfilled gases of petrol engines of catalysts, synthesized on the basis of the platinum group metals with established relatively low concentrations, does not always provide the necessary level of exhaust gas from hydrocarbons, especially in a context of ever-tightening environmental standards. Invited to address this focus on Palladium catalysts with high activity in the oxidation of methane. The main factors affecting the oxidation of methane concentration of palladium, gas pressure, geometric surface, as well as the methods of stabilization of palladium catalysts for long-term operation. Proposed and synthesized palladium catalysts with high activity and stability and were tested in the converter for purification of exhaust gas of engines KAMAZ 820.52-260 and Cummings D-260G, confirming the high functional quality developed catalytic compositions.

vehicle; gas engine; gas fuel; methane; emission; catalytic converter