eprintid: 19631
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/96/31
datestamp: 2024-06-04 14:19:22
lastmod: 2024-06-04 14:19:22
status_changed: 2024-06-04 14:15:28
type: article
metadata_visibility: show
creators_name: Farid, M.A.A.
creators_name: Mohd Johari, S.A.
creators_name: Lease, J.
creators_name: Ayoub, M.
creators_name: Andou, Y.
title: Kinetics and thermodynamics in microwave-assisted transesterification of palm oil utilizing sulphonated bio-graphene catalysts for biodiesel production
ispublished: pub
keywords: Activation energy; Biodiesel; Catalysts; Free energy; Gibbs free energy; Kinetics; Palm oil; Reaction rates; Transesterification, Biodiesel production; Designed experiments; Heterogeneous catalyst; In-depth analysis; Kinetics and thermodynamics; Microwave-assisted transesterification; Reaction performance; Reaction yields; Reactions rates; ]+ catalyst, Graphene, activation energy; biofuel; biomass; catalyst; ester; graphite; reaction kinetics; thermodynamics; vegetable oil
note: cited By 0
abstract: Enhanced reaction performance is what has piqued interest in using graphene-based catalysts in producing biodiesel. However, in-depth analyses were lacking from a kinetic and thermodynamic standpoint. This means that a well-designed experiment is necessary to determine the effect that the graphene catalysts have on the reaction rates and yields. This work addresses the kinetic and thermodynamic aspects of heterogeneously catalyzed transesterification using sulphonated biomass-derived graphene catalysts, i.e., bGO-SO3H and brGO-SO3H. It was accomplished using the pseudo-first order mechanism and the Eyring-Polanyi equation, with all data fitting satisfactorily in both models at the ideal reaction temperature of 353.15 K, resulting in R2 values of 0.9784 (bGO-SO3H) and 0.9884 (brGO-SO3H). The calculated activation energy (Ea) was determined to be 44.45 and 51.73 kJ mol-1 for bGO- and brGO-SO3H, respectively. Additionally, the Gibbs free energy (�G) values were determined at �38.09 and �31.81 kJ mol�1 for bGO- and brGO-SO3H, respectively. Meanwhile, the values for �H and �S were obtained as 41.69 kJ mol�1 and 225.93 J mol�1 K�1, respectively, and 48.96 kJ mol�1 and 228.72 J mol�1 K�1, respectively. These collective outcomes collectively signify the endothermic nature of the reaction and their spontaneity, particularly under elevated temperature conditions. © 2024 Elsevier Ltd
date: 2024
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85191653379&doi=10.1016%2fj.biombioe.2024.107236&partnerID=40&md5=bed1a226a7cef81130494405c84a7693
id_number: 10.1016/j.biombioe.2024.107236
full_text_status: none
publication: Biomass and Bioenergy
volume: 185
refereed: TRUE
citation:   Farid, M.A.A. and Mohd Johari, S.A. and Lease, J. and Ayoub, M. and Andou, Y.  (2024) Kinetics and thermodynamics in microwave-assisted transesterification of palm oil utilizing sulphonated bio-graphene catalysts for biodiesel production.  Biomass and Bioenergy, 185.