5Ni/MgO and 5Ni/MgO + MOx (M = Zr, Ti, Al) Catalyst for Hydrogen Production via Dry Reforming of Methane: Promotor-Free, Cost-Effective, and Handy Catalyst System

Utilization of CO 2 as a promising oxidant under dry reforming methane (DRM) can mitigate two greenhouse gases (CO 2 and CH 4 ) together, as well as DRM reaction may be a source of H 2 energy in future. The cost-effective and handy catalyst preparation procedures like mixing, drying and calcining ma...

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Bibliographic Details
Published in:Catalysis letters 2024-07, Vol.154 (7), p.3441-3456
Main Authors: Patel, Naitik, Al-Fatesh, Ahmed S., Bamatraf, Nouf A., Osman, Ahmed I., Alreshaidan, Salwa B., Fakeeha, Anis H., Wazeer, Irfan, Kumar, Rawesh
Format: Article
Language:English
Subjects:
Alumina
Aluminum oxide
Carbon dioxide
Catalysis
Catalysts
Chemical engineering
Chemistry
Chemistry and Materials Science
Drying
Greenhouse gases
Hydrogen
Hydrogen production
Industrial Chemistry/Chemical Engineering
Magnesium oxide
Metal oxides
Methane
Nitrates
Organometallic Chemistry
Oxidation
Oxidizing agents
Phase transitions
Physical Chemistry
Reforming
Solid solutions
Temperature
Thermogravimetry
Titanium
Titanium dioxide
Transmission electron microscopy
Zirconium
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Summary:Utilization of CO 2 as a promising oxidant under dry reforming methane (DRM) can mitigate two greenhouse gases (CO 2 and CH 4 ) together, as well as DRM reaction may be a source of H 2 energy in future. The cost-effective and handy catalyst preparation procedures like mixing, drying and calcining may turn this reaction from lab to industry. In this line, herein, 5Ni/MgO and 5Ni/MgO + MO x (M = Zr, Ti, Al) catalysts were prepared, investigated for DRM and characterized by X-ray diffraction, Raman, temperature programmed reduction/desorption, thermogravimetry and transmission electron microscope. Among the prepared catalysts, the 5Ni/MgO + TiO 2 catalyst exhibits the highest concentration of active Ni sites enhanced reducibility under oxidizing and reducing environments, but catalytic excellency is hindered by severe graphitic-type coke deposition. On the other hand, the 5Ni/MgO + Al 2 O 3 catalyst predominantly comprises metallic Ni resulting from the reduction of “strongly interacted NiO”, expanded surface area and the highest concentration of easily accessible active sites, contributing to its superior performance (H 2 yield ~ 71% up to 430 min time on stream) under oxidizing and reducing conditions during DRM. The outstanding performance of the 5Ni/MgO + Al 2 O 3 catalyst marks a significant stride towards the development of an industrially viable, cost-effective, and convenient catalyst system for DRM. Graphical Abstract
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-023-04548-z