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Catalysts 2019, 9(3), 249; https://doi.org/10.3390/catal9030249

Optimization of Ammonia Oxidation Using Response Surface Methodology

New Chemical Syntheses Institute, Al. Tysiąclecia Państwa Polskiego 13a, 24-100 Puławy, Poland
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Received: 22 December 2018 / Revised: 14 February 2019 / Accepted: 4 March 2019 / Published: 9 March 2019
(This article belongs to the Special Issue Emissions Control Catalysis)
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Abstract

In this paper, the design of experiments and response surface methodology were proposed to study ammonia oxidation process. The following independent variables were selected: the reactor’s load, the temperature of reaction and the number of catalytic gauzes, whereas ammonia oxidation efficiency and N2O concentration in nitrous gases were assumed as dependent variables (response). Based on the achieved results, statistically significant mathematical models were developed which describe the effect of independent variables on the analysed responses. In case of ammonia oxidation efficiency, its achieved value depends on the reactor’s load and the number of catalytic gauzes, whereas the temperature in the studied range (870–910 °C) has no effect on this dependent variable. The concentration of nitrous oxide in nitrous gases depends on all three parameters. The developed models were used for the multi-criteria optimization with the application of desirability function. Sets of parameters were achieved for which optimization assumptions were met: maximization of ammonia oxidation efficiency and minimization of the N2O amount being formed in the reaction. View Full-Text
Keywords: ammonia oxidation; response surface methodology; desirability function; Box-Behnken design ammonia oxidation; response surface methodology; desirability function; Box-Behnken design
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Inger, M.; Dobrzyńska-Inger, A.; Rajewski, J.; Wilk, M. Optimization of Ammonia Oxidation Using Response Surface Methodology. Catalysts 2019, 9, 249.

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