DICATIONIC ACIDIC IONIC LIQUIDS AS CATALYSTS FOR ESTERIFICATION REACTION BY CONVENTIONAL AND ULTRASONICASSISTED TECHNIQUES

• Main Author: MASRI, ASIAH NUSAIBAH
• Format: Thesis
• Language: English
• Published: 2021
• Subjects: TP Chemical technology
• Online Access: http://utpedia.utp.edu.my/id/eprint/20708/1/Asiah%20Nusaibah%20Masri_G02453.pdf; http://utpedia.utp.edu.my/id/eprint/20708/

Catalyst development for biodiesel production is an important area of interest as the current production uses corrosive acid catalyst and requires long reaction time. This study aims to develop an alternative environmental-friendly acid catalyst for esterification reaction through ultrasonic-assisted (US) and mechanical stirring (MS) reaction techniques, and to study their reaction kinetic. A new series of SO3Hfunctionalized dicationic ionic liquids (DILs) were synthesized. Monocationic ammonium based ILs (MILs) and several conventional acids were also prepared as performance reference. Their acidity values were evaluated through computational, Hammett and pH acidity methods, where DILs showed higher acidity compared to MILs and acids. Similarly, DILs-catalyzed reaction through both MS and US techniques results to better FAME production than that of MILs and acids. The reaction conditions were optimized separately under both MS and US with the aid of Response Surface Methodology.