Selecting a suitable catalyst for implementing both simultaneous productions of hydrogen-rich syngas and multi-walled carbon nanotubes (MWCNTs) through the integration of dry reforming and methane decomposition reactions has recently gained great interests. In this study, a series of bimetallic (NiMo/MgO) and trimetallic (CoNiMo/MgO, FeNiMo/MgO, CoFeMo/MgO) catalysts was prepared and evaluated for a catalytic activity of CH4 and CO2 conversions of biogas in a fixed bed reactor at 800°C and atmospheric pressure. Among the catalysts investigated for directly converting biogas process, the bimetallic NiMo/MgO catalyst showed the outstanding catalytic performance with 86.4% CH4 conversion and 95.6% CO2 conversion as well as producing the highest syngas purity of 90.0% with H2/CO ratio = 1.1. Moreover, the characterization of the synthesized CNTs proved that the well-aligned structured morphology, high purity, and excellent textural properties were obtained using NiMo/MgO catalyst. On the other hand, using trimetallic catalysts which have the composition of Co and Fe particles leads to severe deactivation. This could be elucidated by the influence of the catalyst oxidation with CO2 in biogas, resulting in the transformation of metal into large metal oxide. The integrative process through using NiMo/MgO catalysts is regarded as a promising pathway, which has potentially useful for directly converting biogas into a high value-added product and provides a management approach for the enormous amounts of wastes.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.