Thermal safety assessment through the concept of structure–reactivity: application to vegetable oil valorization

Sebastien Leveneur

    Research output: Contribution to journalArticleScientificpeer-review

    21 Citations (Scopus)

    Abstract

    The concept of linear free-energy relationships, and more particularly the Taft equation, was extended to a multiphase system with several reactions and reaction centers: the epoxidation of vegetable oils and free fatty acids. The epoxidation of vegetable oils and free fatty acids by different percarboxylic acids produced in situ is an exothermic reaction system which can lead to a thermal runaway. The safety criterion time-to-maximum-rate under adiabatic conditions (TMRad), linked to the kinetics of the system, was determined with the advanced reactive system screening tool (ARSST). We have demonstrated that TMRad values for the epoxidation of vegetable oils and free fatty acids by using different carboxylic acids follow the Taft equation. The epoxidation reaction series by different carboxylic acids was found to be more sensitive to the polar effect than steric effect. It was demonstrated that, by knowing the carboxylic acid used for the epoxidation, it is possible to predict the values of TMRad.

    Original languageUndefined/Unknown
    Pages (from-to)543–550
    JournalOrganic Process Research and Development
    Volume21
    Issue number4
    DOIs
    Publication statusPublished - 2017
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Chemical Engineering

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