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Vol. 30 No. 6 (2018): Vol 30 Issue 6

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Catalytic Activity of 0.4 % Rhodium Supported Microporous AlPO4-5 Catalyst for NO-CO-C3H6-O2 Reactions

https://doi.org/10.14233/ajchem.2018.21210
Ahmed Jalal Samed
Department of Chemistry, School of Physical Sciences, Shahjalal University of Science & Technology, Sylhet-3114, Bangladesh
Masato Machida
Department of Nano Science and Technology, Graduate School of Science and Technology, Kumamoto University, 2-39-1, Kurokami, Kumamoto, 860-8555 Japan

Corresponding Author(s) : Ahmed Jalal Samed

ajf-che@sust.edu

Asian Journal of Chemistry, Vol. 30 No. 6 (2018): Vol 30 Issue 6

Abstract

Temperature-programmed reactions of mixtures of NO, CO, C3H6 and O2 were investigated over rhodium supported on microporous AlPO4-5 catalyst. Same reactions were studied after treating the catalyst in a stream of H2 to evaluate the catalytic performance after reduction treatment. Microporous AlPO4-5 was synthesized hydrothermally using triethylamine as structure directing agent and then been used as a support for rhodium metal. A lower amount of rhodium (0.4 wt %) supported on microporous AlPO4-5 catalyst exhibited satisfactory light-off at temperature (T50 % = 300 ºC) with a steep rise in conversion efficiency after aging the catalyst at 900 ºC for 25 h in a stream of 10 % H2O/air. Outstanding result was observed after reduction treatment of the catalyst, where light-off shifted to a lower temperature 200 ºC maintaining steep rise in conversion efficiency. Rhodium nanoparticles were well dispersed on the high surface area microporous AlPO4-5 material, which is believed to be the key factor for exhibiting excellent catalytic activity both in the oxidizing as well as reducing environment. This newly developed rhodium supported microporous AlPO4-5 catalyst with minimum rhodium loading having excellent catalytic performance after reduction treatment, has the potential to serve as a new generation there-way catalyst.

Keywords

Microporous AlPO4-5 Rhodium nanoparticle Three-way catalyst Reduction treatment
Samed, A. J., & Machida, M. (2018). Catalytic Activity of 0.4 % Rhodium Supported Microporous AlPO4-5 Catalyst for NO-CO-C3H6-O2 Reactions. Asian Journal of Chemistry, 30(6), 1273–1276. https://doi.org/10.14233/ajchem.2018.21210
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