Hydrogen-Rich Syngas Production via Dry and Steam Reforming of Methane in Simulated Producer Gas over ZSM-5-Supported Trimetallic Catalysts

John Tamunosaki Iminabo (), Misel Iminabo, Alex C. K. Yip and Shusheng Pang ()
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John Tamunosaki Iminabo: Department of Chemical and Process Engineering, University of Canterbury, Christchurch 8041, New Zealand
Misel Iminabo: Department of Chemical and Process Engineering, University of Canterbury, Christchurch 8041, New Zealand
Alex C. K. Yip: Department of Chemical and Process Engineering, University of Canterbury, Christchurch 8041, New Zealand
Shusheng Pang: Department of Chemical and Process Engineering, University of Canterbury, Christchurch 8041, New Zealand

Energies, 2023, vol. 16, issue 22, 1-19

Abstract: This study investigated the production of hydrogen-rich syngas from renewable sources using durable and efficient catalysts. Specifically, the research focused on steam methane reforming (SRM) and dry methane reforming (DRM) of simulated producer gas from biomass steam gasification in a fluidized bed reactor. The catalysts tested are ZSM-5-supported nickel-iron-cobalt-based trimetallic catalysts in different ratios, which were prepared via the wet impregnation method. Synthesized catalysts were characterized using XRD, BET, H 2 -TPR, and SEM techniques. The results of the SRM with the simulated producer gas showed that the 20%Ni-20%Fe-10%Co/ZSM-5 trimetallic catalyst, at a gas hourly space velocity (GHSV) of 12 L·h −1 ·g −1 and reaction temperature of 800 °C, achieved the highest CH 4 conversion (74.8%) and highest H 2 yield (65.59%) with CO 2 conversion (36.05%). Comparing the performance of the SRM and DRM of the simulated producer gas with the 20%Ni-20%Fe-10%Co/ZSM5 at a GHSV of 36 L·h −1 ·g −1 and 800 °C, they achieved a CH 4 conversion of 67.18% and 64.43%, a CO 2 conversion of 43.01% and 52.1%, and a H 2 yield of 55.49% and 42.02%, respectively. This trimetallic catalyst demonstrated effective inhibition of carbon formation and sintering, with only 2.6 wt.% carbon deposition observed from the thermo-gravimetric analysis of the used catalyst from the SRM of the simulated producer gas, thus promoting the potential of the ZSM-5-supported trimetallic catalysts in methane reforming.

Keywords: trimetallic catalyst; dry methane reforming (DRM); steam methane reforming (SRM); titanomagnetite; ZSM-5 support (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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