Synergistic effect of Ni and CeOx in NiCeOx/SSZ-13 catalyst for boosting activity and stability during dry reforming of methane

Han, Dawei; Yang, Yitao; Wu, Tongtong; Wang, Zhenpeng; Xiong, Jing; Zou, Jianping; Wei, Yuechang

doi:10.1016/j.cattod.2024.114720

Cited by 1 publication

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“…Amvrosios et al [100] prepared Ni/LnOx-type catalysts (Ln = La, Ce, Sm, or Pr) via a citrate sol-gel method and evaluated the dry reforming of methane. It was found that despite the high oxygen storage capacity and redox properties of CeO 2 [101,102], the Ni/CeO 2 catalyst showed lower CH 4 and CO 2 conversion values (just 13% and 35%, respectively) at the conditions of 750 • C, Ar/CH 4 /CO 2 = 2.5:1.5:1, and WGHSV = 200,000 mL g −1 h −1 , a much lower H 2 /CO ratio between 0.3 and 0.6, and high amounts of coke deposits, making it the worst-performing catalyst. The specific surface area of the Ni/CeO 2 catalyst was 3 m 2 g −1 , while the specific surface area of the Ni/La 2 O 3 catalyst was 15 m 2 g −1 .…”

Section: Stability Performance Of La Addition In Ni-based Catalysts F...mentioning

confidence: 99%

Performance of Ni-Based Catalysts with La Promoter for the Reforming of Methane in Gasification Process

Chen,

Wang

2024

Catalysts

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The deactivation of active sites caused by high-temperature sintering and the deposition of a large amount of carbon are the main difficulties in the reforming of methane using Ni-based catalysts. La, as a promoter, has an ameliorating effect on the defects of Ni-based catalysts. In this article, the mechanism of action of Ni-based catalysts with the introduction of the rare-earth metal additive La was reviewed, and the effects of La on the methane-reforming performance of Ni-based catalysts were examined. The physical properties, alkalinity, and activity of Ni-based catalysts can be enhanced by the use of the auxiliary agent La, which promotes the conversion of CH4 and CO2 as well as the selectivity towards H2 and CO formation in the reforming of methane. The reason why the Ni-based catalysts could maintain long-term stability in the presence of La was discussed. Furthermore, the current state of research on the introduction of different amounts of La in the reforming of methane at home and abroad was analyzed. It was found that 2–5 wt.% La is the most optimal quantity for improving the catalyst activity and stability, as well as the CO2 chemisorption. The limitations and directions for future research in the reforming of methane were discussed.

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Section: Stability Performance Of La Addition In Ni-based Catalysts F...mentioning

confidence: 99%

Performance of Ni-Based Catalysts with La Promoter for the Reforming of Methane in Gasification Process

Chen,

Wang

2024

Catalysts

View full text Add to dashboard Cite

show abstract

Synergistic effect of Ni and CeOx in NiCeOx/SSZ-13 catalyst for boosting activity and stability during dry reforming of methane

Cited by 1 publication

References 44 publications

Performance of Ni-Based Catalysts with La Promoter for the Reforming of Methane in Gasification Process

Performance of Ni-Based Catalysts with La Promoter for the Reforming of Methane in Gasification Process

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