The Effect of Preparation Method on the Activity of Bimetallic Ni-Fe Catalyst in Dry Reforming of Methane

Document Type : Research Paper

Authors

1 Department of Chemical Engineering, Faculty of Engineering, Razi University, Kermanshah, Iran.

2 Chemical Engineering Departement,Oil and petrochemical faculty, Razi University

3 Department of Chemical Engineering, Islamic Azad University, South Tehran Branch

Abstract

This paper investigates the effects of Fe/Ni ratio (0.5-2) and polyvinyl alcohol to total metal ratio (PVA/ (Ni + Fe) =0.5-1.5) on the performance of bimetallic(Ni-Fe) catalyst in dry reforming of methane. The activity, stability and H2/CO ratio of the catalysts are tested. The effects of both metal ratio and shell factor on the catalyst performance have been studied. The nickel-ferrite catalysts were prepared by sol-gel method. Shell factor is employed for controlling the size of the particles. The samples were characterized by XRD, BET, SEM, and TGA. The catalysts were tested at 800˚C in the microreactor with a feed ratio of CH4/CO2=1/1. The catalyst prepared with Fe/Ni=2 and PVA/ (Ni + Fe) = 0.5 ratio shows the best activity, and stability with 30 h time on stream. It can be attributed to NiFe2O4 as only available phase after calcination and smaller crystal size at the optimum values of Fe/Ni and PVA/ (Ni + Fe) ratio.

Keywords


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Volume 56, Issue 1
June 2022
Pages 77-87
  • Receive Date: 04 September 2021
  • Revise Date: 04 January 2022
  • Accept Date: 04 January 2022
  • First Publish Date: 22 January 2022