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Comparative characterization of iridium loading on catalyst assessment under different conditions

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Abstract

To discuss the potential role of iridium (Ir) nanoparticles loaded under atmospheric and high pressures, we prepared a series of catalysts with the same active phase but different contents of 10wt%, 20wt%, and 30wt% on gamma-alumina for decomposition of hydrazine. Under atmospheric pressure, the performance of the catalyst was better when 30wt% of the Ir nanoparticles was used with chelating agent that had greater selectivity of approximately 27%. The increase in the reaction rate from 175 to 220 h−1 at higher Ir loading (30wt%) was due to a good dispersion of high-number active phases rather than an agglomeration surface. As a satisfactory result of this investigation at high pressure, Ir catalysts with different weight percentages showed the same stability against crushing and activity with a characteristic velocity of approximately 1300 m/s.

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Amirsardari, Z., Dourani, A., Amirifar, M.A. et al. Comparative characterization of iridium loading on catalyst assessment under different conditions. Int J Miner Metall Mater 28, 1233–1239 (2021). https://doi.org/10.1007/s12613-020-2058-4

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  • DOI: https://doi.org/10.1007/s12613-020-2058-4

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