Effect of Ni active site position and synthesis route on activity, stability, and morphology of Ce promoted Ni/Al2O3 catalyst for clean H2 production

Meshksar, Maryam; Farsi, M.; Rahimpour, Mohammad Reza

doi:10.1016/j.jece.2022.108471

Cited by 18 publications

(1 citation statement)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[74] Sharp weight loss in the first zone at a range of 40-250 C might be attributed to the adsorbed H 2 O. [75] While there is almost no weight loss in the second zone between 250 and 500 C for 20Ni-3Ce/MA and 20Ni-3Ce/BA, 20Ni/MA, as well as 20Ni/BA, have a slight decrease in weight percent due to the amorphous carbon removal, which conforms the results of EDX, FESEM, and XRD analysis. The third weight reduction zone in 500-800 C for 20Ni/MA, is correlated with the graphite coke deposited on the catalyst.…”

Section: Life Time Stabilitymentioning

confidence: 99%

Synthesis and utilization of mesoporous alumina as a supporting material of Ce‐promoted Ni‐based catalysts in the methane reforming process

et al. 2023

Self Cite

View full text Add to dashboard Cite

Due to the large applications of hydrogen as a feedstock of chemical industries and as an energy carrier, its production on large scales with low costs has attracted researchers. Steam reforming of methane (SRM) is the most common process for producing H2‐rich syngas over Ni/Al2O3 catalysts, which suffer from coke deposition and Ni particles agglomeration. For overcoming these issues, we have synthesized mesoporous alumina (MA) as a supporting material of Ni particles, structure, and activity, which were compared with the bulk alumina (BA) supported catalysts in the SRM process for the first time. Besides, cerium as an appropriate promoter for lowering deposited coke was added to all prepared catalysts. The reaction temperature (600–700°C), Ni loading (10–25 wt.%), and Ce loading (1–5 wt.%) were the parameters that were optimized for maximizing H2 yield and CH4 conversion. Prepared samples were characterized by various techniques before and/or after reaction. The results of TEM and XRD depicted the formation of nanocrystalline and mesoporous structure for Ni‐MA catalysts compare to Ni‐BA samples. The observations indicated that 20Ni‐3Ce/MA had the highest catalytic performance, achieving a CH4 conversion of 91.0% and H2 yield of 92.8% at 700°C.

show abstract

Section: Life Time Stabilitymentioning

confidence: 99%

Synthesis and utilization of mesoporous alumina as a supporting material of Ce‐promoted Ni‐based catalysts in the methane reforming process

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

Recent Advances in Bimetallic Catalysts for Methane Steam Reforming in Hydrogen Production: Current Trends, Challenges, and Future Prospects

Yusuf,

Umar,

Kotob

et al. 2023

Chemistry An Asian Journal

View full text Add to dashboard Cite

As energy demand continues to rise and the global population steadily grows, there is a growing interest in exploring alternative, clean, and renewable energy sources. The search for alternatives, such as green hydrogen, as both a fuel and an industrial feedstock, is intensifying. Methane steam reforming (MSR) has long been considered a primary method for hydrogen production, despite its numerous advantages, the activity and stability of the conventional Ni catalysts are major concerns due to carbon formation and metal sintering at high temperatures, posing significant drawbacks to the process. In recent years, significant attention has been given to bimetallic catalysts as a potential solution to overcome the challenges associated with methane steam reforming. Thus, this review focuses on the recent advancements in bimetallic catalysts for hydrogen production through methane steam reforming. The review explores various aspects including reactor type, catalyst selection, and the impact of different operating parameters such as reaction temperature, pressure, feed composition, reactor configuration, and feed and sweep gas flow rates. The analysis and discussion revolve around key performance indicators such as methane conversion, hydrogen recovery, and hydrogen yield.

show abstract

Ammonia application in carbon dioxide capture

Kiani,

Meshksar,

Makarem

et al. 2024

Progresses in Ammonia: Science, Technology and Membranes

View full text Add to dashboard Cite

Effect of Ni active site position and synthesis route on activity, stability, and morphology of Ce promoted Ni/Al2O3 catalyst for clean H2 production

Cited by 18 publications

References 42 publications

Synthesis and utilization of mesoporous alumina as a supporting material of Ce‐promoted Ni‐based catalysts in the methane reforming process

Synthesis and utilization of mesoporous alumina as a supporting material of Ce‐promoted Ni‐based catalysts in the methane reforming process

Recent Advances in Bimetallic Catalysts for Methane Steam Reforming in Hydrogen Production: Current Trends, Challenges, and Future Prospects

Ammonia application in carbon dioxide capture

Contact Info

Product

Resources

About