Formation of 2,3-Pentanedione from Lactic Acid over Supported Phosphate Catalysts

    Research output: Research - peer-reviewArticle

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    Abstract

    Lactic acid is converted to 2,3-pentanedione, acrylic acid, and acetaldehyde in vapor-phase reactions at 0.5 MPa over phosphate salts. Highest selectivities to 2,3-pentanedione are achieved at 280-300°C and long (2-4 sec) residence times, while selectivity to acrylic acid is best at 350°C and short residence times (0.4 sec). 2,3-Pentanedione is proposed to form by a second-order condensation in the presence of phosphate, while acrylic acid is proposed to result from elimination of water via a cyclic lactic acid-phosphate transition state.

    LanguageEnglish (US)
    Pages252-260
    Number of pages9
    JournalJournal of Catalysis
    Volume148
    Issue number1
    DOIs
    StatePublished - Jul 1994

    Profile

    lactic acid
    acrylic acid
    phosphates
    catalysts
    Lactic acid
    Acrylics
    Phosphates
    Catalysts
    Acids
    Lactic Acid
    2,3-pentanedione
    selectivity
    acetaldehyde
    elimination
    condensation
    vapor phases
    salts
    water
    Acetaldehyde
    Condensation

    ASJC Scopus subject areas

    • Process Chemistry and Technology
    • Catalysis

    Cite this

    Formation of 2,3-Pentanedione from Lactic Acid over Supported Phosphate Catalysts. / Gunter, G. C.; Miller, D. J.; Jackson, J. E.

    In: Journal of Catalysis, Vol. 148, No. 1, 07.1994, p. 252-260.

    Research output: Research - peer-reviewArticle

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