Modified Micro/Mesoporous Catalysts for Deep Oxidation of Volatile Organics: Catalytic Performance and Kinetic Study

Document Type : Regular Article

Authors

1 Kosar University of Bojnord, Department of Applied Chemistry, North Khorasan, Iran

2 Faculty of Chemistry and Petroleum Sciences, Department of Petroleum Chemistry and Catalysis, University of Shahid Beheshti, Tehran, 1983963113, Iran

10.22036/pcr.2022.335248.2067

Abstract

With the aim of eliminating toluene as volatile organic compound, a collection of Pt-(Sn/Re)-HZSM-5/HMS catalysts with different weight percent of Sn/Re have been synthesized. Also, the catalytic performances of the prepared catalysts were compared to obtain the best activity and CO2 and CO selectivity versus various catalyst weight percent, temperature (200-500 °C) and time on stream (1-65 h). The results show that incorporation of Sn and Re into Pt-HZSM-5/HMS structure promotes catalyst activity in which the high amount of 99.8% conversion obtained with PRSZH at T=500 °C. Increasing temperature has an adverse effect on CO selectivity in all catalysts. The best CO2 selectivity (100%) was observed at 500 ○C and Pt(0.3 wt%)‐Sn(0.3 wt%))-HZSM-5/HMS. The proper kinetics study leads to suitable decisions about catalytic performance. Employing two models, it was possible to provide good information about the kinetic behavior of the prepared catalysts. Although both modeling methods exhibit outstanding performances, however, kinetics data reveal that Mars-van Krevelen model has better performances compared to the Power law model.

Graphical Abstract

Modified Micro/Mesoporous Catalysts for Deep Oxidation of Volatile Organics: Catalytic Performance and Kinetic Study

Physical Chemistry Research
Volume 11, Issue 3 - Serial Number 39
September 2023
Pages 493-500

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History

  • Receive Date: 26 March 2022
  • Revise Date: 09 July 2022
  • Accept Date: 22 July 2022

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