Abstract
Nitrogen oxides (NOx) play a major role in the formation of photochemical smog and in acid rain production1. Some progress has been made in reducing NOx emissions through the use of combustion and exhaust control schemes, including three-way catalyst, staged combustion, and ammonia injection. Nevertheless, estimates indicate that the production of nitrogen oxides will continue to increase until the end of the century and beyond, if current trends continue2. We describe here a new chemical process capable of completely removing NOx from the products of combustion. The effectiveness of this process is established in flow tube experiments. Further, we demonstrate the practical feasibility of this method by eliminating NOx from a portion of the exhaust from a single-cylinder diesel engine. Based on these results we conclude that this process for rapid reduction of nitrogen oxides could play a major role in controlling NOx emissions from most combustion devices.
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References
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Perry, R. A. US Patent pending.
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Perry, R., Siebers, D. Rapid reduction of nitrogen oxides in exhaust gas streams. Nature 324, 657–658 (1986). https://doi.org/10.1038/324657a0
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DOI: https://doi.org/10.1038/324657a0
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