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

    Research output: Contribution to journalArticle

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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.

    Original languageEnglish (US)
    Pages (from-to)252-260
    Number of pages9
    JournalJournal of Catalysis
    Volume148
    Issue number1
    DOIs
    StatePublished - Jul 1994

    Profile

    phosphates
    Phosphates
    lactic acid
    acrylic acid
    Lactic acid
    Acrylics
    Acids
    selectivity
    acetaldehyde
    elimination
    condensation
    vapor phases
    salts
    catalysts
    water
    Acetaldehyde
    Condensation
    Vapors
    Salts
    Catalysts

    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: Contribution to journalArticle

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

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

    Research output: Contribution to journalArticle

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