Synthesis of a New CO2 Philic Surfactant for Enhanced Oil Recovery Applications

Muhammad Sagir, Isa M. Tan, Muhammad Mushtaq, Lukman Ismail, Muhammad Nadeem, Muhammad Rizwan Azam

    Research output: Contribution to journalArticlepeer-review

    20 Scopus citations


    The synthesis of CO2 philic surfactant using maleic anhydride and 4-tert-butylbenzyl alcohol is reported. We reacted maleic anhydride with 4-tert-butylbenzyl alcohol to form bis(4-(tert-butyl)benzyl) fumarate and sulfonated the produced diester. The esterification reaction was optimized for a maximum yield of 98% of bis(4-(tert-butyl)benzyl) fumarate. First-order reaction kinetics with respect to acid was observed. The activation energy was found to be 55.62 kJ/mol. The sulfonated product of diester was obtained by the sulfonation reaction and the yield of 82% of surfactant was achieved. The in-house developed surfactant effectively lowered down the IFT between CO2/brine to 4.2 mN/m. This surfactant is targeted for CO2-EOR applications.

    Original languageBritish English
    Pages (from-to)647-654
    Number of pages8
    JournalJournal of Dispersion Science and Technology
    Issue number5
    StatePublished - May 2014


    • EOR
    • interfacial tension
    • kinetics
    • surfactants


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