Tri-reforming of methane over Ni/ZrO2 catalyst derived from Zr-MOF for the production of synthesis gas

The increasing concentration of CO 2 and CH 4 in the environment is a global concern. Tri-reforming of methane (TRM) is a promising route for the conversion of these two greenhouse gases to more valuable synthesis gas with an H 2 /CO ratio of 1.5–2. In this study, a series of Zr-MOF synthesized via...

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Bibliographic Details
Published in:Environmental science and pollution research international 2024-05, Vol.31 (24), p.35069-35082
Main Authors: Pandey, Akansha, Biswas, Prakash
Format: Article
Language:English
Subjects:
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Carbon dioxide
Carbon dioxide concentration
Catalysts
Chemisorption
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Gravimetric analysis
Greenhouse gases
High resolution electron microscopy
Metal surfaces
Metal-organic frameworks
Metals
Methane
Microscopy
Nickel
Packed beds
Physicochemical properties
Reforming
Research Article
Scanning electron microscopy
Synthesis gas
Thermogravimetric analysis
Transmission electron microscopy
Waste Water Technology
Water Management
Water Pollution Control
X-ray diffraction
Zirconium dioxide
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Summary:The increasing concentration of CO 2 and CH 4 in the environment is a global concern. Tri-reforming of methane (TRM) is a promising route for the conversion of these two greenhouse gases to more valuable synthesis gas with an H 2 /CO ratio of 1.5–2. In this study, a series of Zr-MOF synthesized via the solvothermal method and impregnation technique was used to synthesize the nickel impregnated on MOF-derived ZrO 2 catalyst. The catalyst was characterized by various methods, including N 2 -porosimetry, X-ray diffraction (XRD), temperature programmed reduction (TPR), CO 2 -temperature programmed desorption (CO 2 -TPD), thermo-gravimetric analysis (TGA), chemisorption, field-emission scanning electron microscopy (FE-SEM), and high-resolution transmission electron microscopy (HR-TEM). Characterization results confirmed the formation of the Zr-MOF and nickel metal dispersed on MOF-derived ZrO 2 . Further, the tri-reforming activity of the catalyst developed was evaluated in a downflow-packed bed reactor. The various catalysts were screened for TRM activity at different temperatures (600–850 °C). Results demonstrated that TRM was highly favorable over the NZ-1000 catalyst due to its desirable physicochemical properties, including nickel metal surface area (2.3 m 2 /g cat −1 ), metal dispersion (7.1%), and nickel metal reducibility (45%), respectively. Over the NZ-1000 catalyst, an optimum H 2 /CO ratio of ~ 1.6–2 was achieved at 750 °C, and it was stable for a longer period of time. Graphical Abstract
ISSN:1614-7499
0944-1344
1614-7499
DOI:10.1007/s11356-024-33549-7