Zahra Amirsardari, Akram Dourani, Mohamad Ali Amirifar, and Nooredin Ghadiri Massoom, Comparative characterization of iridium loading on catalyst assessment under different conditions, Int. J. Miner. Metall. Mater.
Cite this article as:
Zahra Amirsardari, Akram Dourani, Mohamad Ali Amirifar, and Nooredin Ghadiri Massoom, Comparative characterization of iridium loading on catalyst assessment under different conditions, Int. J. Miner. Metall. Mater.
Research Article

Comparative characterization of iridium loading on catalyst assessment under different conditions

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  • Corresponding author:

    Zahra Amirsardari    E-mail:

  • Received: 8 January 2020Revised: 20 March 2020Accepted: 30 March 2020Available online: 3 April 2020
  • 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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