Self-assembly of flower-like LaNiAlO3-supported nickel catalysts for CO methanation

Hamidreza Arandiyan*, Ghasem Kasaeian, Behzad Nematollahi, Yuan Wang, Hongyu Sun, Stuart Bartlett, Hongxing Dai, Mehran Rezaei

*Corresponding author for this work

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    A series of supported Ni nanoparticles on a flower-like porous LaNi0.6Al0.4O3 (LNAO) perovskite carrier (zNi/LNAO; z = 5, 10 and 15 wt%) were successfully synthesized using a controlled self-assembly sol-gel method. The experimental results showed that the presence of Ni nanoparticles markedly enhanced the reaction rate of CO conversion, namely from 12.4 mmol/(gcat h) over LNAO to 244 mmol/(gcat h) over 10 wt% Ni/LNAO. The porous LNAO perovskite support provides both a large surface area to well disperse Ni nanoparticles and active sites for the methanation reaction, thus resulting in a catalyst with activity (per gram of catalyst basis) at least comparable to other nickel metal-based supported catalysts reported so far and with very good stability. Reaction rates calculated based on Ni exposed surface and total Ni amount revealed that Ni active sites in the Ni nanoparticles and bulk perovskite were distinct.
    Original languageEnglish
    JournalCatalysis Communications
    Volume115
    Pages (from-to)40-44
    Number of pages5
    ISSN1566-7367
    DOIs
    Publication statusPublished - 2018

    Keywords

    • Al-substituted lanthanum nickelate
    • CO methanation
    • Flower-like porous material
    • Perovskite-supported Ni catalyst
    • Self-assembly

    Cite this

    Arandiyan, H., Kasaeian, G., Nematollahi, B., Wang, Y., Sun, H., Bartlett, S., ... Rezaei, M. (2018). Self-assembly of flower-like LaNiAlO3-supported nickel catalysts for CO methanation. Catalysis Communications, 115, 40-44. https://doi.org/10.1016/j.catcom.2018.07.001