Preparation of the F -SO 4 2- /MWCNTs catalyst and kinetic studies of the biodiesel production via esterification reaction of oleic acid and methanol

Qing Shu, Wenqiang Zou, Jiangfan He, Herry Lesmana, Caixia Zhang, Laixi Zou, Yao Wang

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    A novel solid Lewis acid catalyst F -SO 4 2- /MWCNTs was prepared by impregnating multi-walled carbon nanotubes with sulfuric acid and NaF solution. It was characterized by several techniques. Catalytic activity of F -SO 4 2- /MWCNTs was evaluated in the esterification reaction of oleic acid and methanol. It exhibited high catalytic activity, giving an oleic acid conversion of 90% when the reaction was conducted with 0.9 wt% catalyst and a methanol/oil molar ratio of 12:1 at 65 °C over 6 h. A kinetic study of F -SO 4 2- /MWCNTs catalyzed esterification reaction of oleic acid and methanol was implemented after reaction conditions have been optimized, and it was described by the reversible pseudo second-order reaction rate law. Kinetic constant was correlated with the molar ratio of methanol to oleic acid, catalyst concentrations and reaction temperature. Pre-exponential factor (A) and activation energy (Ea) of the positive and reverse reactions of the F -SO 4 2- /MWCNTs-catalyzed esterification were obtained. The values of A and Ea of the forward reaction were 1.88 L mol −1 h −1 and 32.73 kJ mol −1 , and the values of the reverse reaction were 1.90 L mol −1 h −1 and 32.61 kJ mol −1 , respectively. The biodiesel product obtained in this study meet the requirements of the ASTM D6751 standard.

    Original languageEnglish
    Pages (from-to)836-845
    Number of pages10
    JournalRenewable Energy
    DOIs
    Publication statusPublished - 1 May 2019

    Fingerprint

    Oleic acid
    Esterification
    Biodiesel
    Methanol
    Catalysts
    Kinetics
    Catalyst activity
    Sulfuric acid
    Reaction rates
    Carbon nanotubes
    Activation energy
    Acids
    Temperature

    Cite this

    @article{e58fefa8e5cb41ff97c708f35f308eba,
    title = "Preparation of the F − -SO 4 2- /MWCNTs catalyst and kinetic studies of the biodiesel production via esterification reaction of oleic acid and methanol",
    abstract = "A novel solid Lewis acid catalyst F − -SO 4 2- /MWCNTs was prepared by impregnating multi-walled carbon nanotubes with sulfuric acid and NaF solution. It was characterized by several techniques. Catalytic activity of F − -SO 4 2- /MWCNTs was evaluated in the esterification reaction of oleic acid and methanol. It exhibited high catalytic activity, giving an oleic acid conversion of 90{\%} when the reaction was conducted with 0.9 wt{\%} catalyst and a methanol/oil molar ratio of 12:1 at 65 °C over 6 h. A kinetic study of F − -SO 4 2- /MWCNTs catalyzed esterification reaction of oleic acid and methanol was implemented after reaction conditions have been optimized, and it was described by the reversible pseudo second-order reaction rate law. Kinetic constant was correlated with the molar ratio of methanol to oleic acid, catalyst concentrations and reaction temperature. Pre-exponential factor (A) and activation energy (Ea) of the positive and reverse reactions of the F − -SO 4 2- /MWCNTs-catalyzed esterification were obtained. The values of A and Ea of the forward reaction were 1.88 L mol −1 h −1 and 32.73 kJ mol −1 , and the values of the reverse reaction were 1.90 L mol −1 h −1 and 32.61 kJ mol −1 , respectively. The biodiesel product obtained in this study meet the requirements of the ASTM D6751 standard.",
    keywords = "Biodiesel, Esterification, Kinetics, Solid Lewis acid",
    author = "Qing Shu and Wenqiang Zou and Jiangfan He and Herry Lesmana and Caixia Zhang and Laixi Zou and Yao Wang",
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    Preparation of the F -SO 4 2- /MWCNTs catalyst and kinetic studies of the biodiesel production via esterification reaction of oleic acid and methanol. / Shu, Qing; Zou, Wenqiang; He, Jiangfan; Lesmana, Herry; Zhang, Caixia; Zou, Laixi; Wang, Yao.

    In: Renewable Energy, 01.05.2019, p. 836-845.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Preparation of the F − -SO 4 2- /MWCNTs catalyst and kinetic studies of the biodiesel production via esterification reaction of oleic acid and methanol

    AU - Shu, Qing

    AU - Zou, Wenqiang

    AU - He, Jiangfan

    AU - Lesmana, Herry

    AU - Zhang, Caixia

    AU - Zou, Laixi

    AU - Wang, Yao

    PY - 2019/5/1

    Y1 - 2019/5/1

    N2 - A novel solid Lewis acid catalyst F − -SO 4 2- /MWCNTs was prepared by impregnating multi-walled carbon nanotubes with sulfuric acid and NaF solution. It was characterized by several techniques. Catalytic activity of F − -SO 4 2- /MWCNTs was evaluated in the esterification reaction of oleic acid and methanol. It exhibited high catalytic activity, giving an oleic acid conversion of 90% when the reaction was conducted with 0.9 wt% catalyst and a methanol/oil molar ratio of 12:1 at 65 °C over 6 h. A kinetic study of F − -SO 4 2- /MWCNTs catalyzed esterification reaction of oleic acid and methanol was implemented after reaction conditions have been optimized, and it was described by the reversible pseudo second-order reaction rate law. Kinetic constant was correlated with the molar ratio of methanol to oleic acid, catalyst concentrations and reaction temperature. Pre-exponential factor (A) and activation energy (Ea) of the positive and reverse reactions of the F − -SO 4 2- /MWCNTs-catalyzed esterification were obtained. The values of A and Ea of the forward reaction were 1.88 L mol −1 h −1 and 32.73 kJ mol −1 , and the values of the reverse reaction were 1.90 L mol −1 h −1 and 32.61 kJ mol −1 , respectively. The biodiesel product obtained in this study meet the requirements of the ASTM D6751 standard.

    AB - A novel solid Lewis acid catalyst F − -SO 4 2- /MWCNTs was prepared by impregnating multi-walled carbon nanotubes with sulfuric acid and NaF solution. It was characterized by several techniques. Catalytic activity of F − -SO 4 2- /MWCNTs was evaluated in the esterification reaction of oleic acid and methanol. It exhibited high catalytic activity, giving an oleic acid conversion of 90% when the reaction was conducted with 0.9 wt% catalyst and a methanol/oil molar ratio of 12:1 at 65 °C over 6 h. A kinetic study of F − -SO 4 2- /MWCNTs catalyzed esterification reaction of oleic acid and methanol was implemented after reaction conditions have been optimized, and it was described by the reversible pseudo second-order reaction rate law. Kinetic constant was correlated with the molar ratio of methanol to oleic acid, catalyst concentrations and reaction temperature. Pre-exponential factor (A) and activation energy (Ea) of the positive and reverse reactions of the F − -SO 4 2- /MWCNTs-catalyzed esterification were obtained. The values of A and Ea of the forward reaction were 1.88 L mol −1 h −1 and 32.73 kJ mol −1 , and the values of the reverse reaction were 1.90 L mol −1 h −1 and 32.61 kJ mol −1 , respectively. The biodiesel product obtained in this study meet the requirements of the ASTM D6751 standard.

    KW - Biodiesel

    KW - Esterification

    KW - Kinetics

    KW - Solid Lewis acid

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    U2 - 10.1016/j.renene.2018.12.067

    DO - 10.1016/j.renene.2018.12.067

    M3 - Article

    SP - 836

    EP - 845

    JO - Renewable Energy

    JF - Renewable Energy

    SN - 0960-1481

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