Mechanism of NiMoO4 formation during oxidative regeneration of resid HDS catalyst

Ryuichiro Iwamoto, Keisui Matsui, Atsushi Yamazaki

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    The regeneration and reuse of resid HDS catalyst is an effective step in the establishment of environmentally friendly refinery. More effective regeneration of resid HDS catalyst requires the prevention of NiMoO4 formation. Aggregation of the active metal components as NiMoO4 during oxidative regeneration of residue HDS catalyst was studied. NiMoO4 was formed only on catalyst regenerated above 723 K. Increased temperature inside the catalyst due to the heat released by coke burning might be the main factor causing active metal aggregation during regeneration. Thus, aggregation of active metals might be prevented with milder regeneration conditions such as lower temperature and lower heating rate.

    Original languageEnglish
    Pages (from-to)211-215
    Number of pages5
    JournalJournal of the Japan Petroleum Institute
    Volume52
    Issue number4
    DOIs
    Publication statusPublished - 2009

    Fingerprint

    Catalysts
    Agglomeration
    Metals
    Heating rate
    Coke
    Temperature

    Keywords

    • Coke burning
    • Micro x-ray diffraction
    • Nickel molybdenum oxide
    • Oxidative regeneration
    • Resid hydrodesulfurization catalyst
    • Vanadium accumulation

    ASJC Scopus subject areas

    • Energy Engineering and Power Technology
    • Fuel Technology

    Cite this

    Mechanism of NiMoO4 formation during oxidative regeneration of resid HDS catalyst. / Iwamoto, Ryuichiro; Matsui, Keisui; Yamazaki, Atsushi.

    In: Journal of the Japan Petroleum Institute, Vol. 52, No. 4, 2009, p. 211-215.

    Research output: Contribution to journalArticle

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