Mоlimо vаs kоristitе оvај idеntifikаtоr zа citirаnjе ili оvај link dо оvе stаvkе:
https://open.uns.ac.rs/handle/123456789/14758
Nаziv: | Kinetics of biodiesel synthesis from sunflower oil over CaO heterogeneous catalyst | Аutоri: | Vujicic D. Comic D. Zarubica A. Mićić, Radoslav Boskovic G. |
Dаtum izdаvаnjа: | 1-јан-2010 | Čаsоpis: | Fuel | Sažetak: | Calcium oxide as a heterogeneous catalyst was investigated for its effect on the biodiesel synthesis from refined sunflower oil. Experiments were carried out using a commercial bench stirred tank reactor of 2 dm3 volume, at 200 rpm, with a methanol to oil ratio 6 to 1 and 1 mas.% catalyst loading as constant parameters. Ester yields were followed as a function of temperature (60-120 °C), pressure (1-15 bars) and reaction time (1.5-5.5 h). The temperature of 100 °C was found to be optimal for the maximum (91%) conversion to methyl esters, while pressure had a positive impact up to 10 bars at 80 °C. The catalyst activation in air leading to the formation of strong basic sites was found to occur at 900 °C. Catalyst particle coalescence took place during the reaction, giving a gum-like structure, and resulted in a significant catalyst deactivation. The pseudo-first order reaction was established, with a "knee" at 80 °C in the Arrhenius plot separating the kinetic and diffusion regimes. During the reaction progress, an activation energy decrease from 161 to 101 kJ/mol, and from 32 to (-3) kJ/mol, was found for the kinetic and diffusion regimes, respectively. © 2010 Elsevier Ltd. All rights reserved. | URI: | https://open.uns.ac.rs/handle/123456789/14758 | ISSN: | 162361 | DOI: | 10.1016/j.fuel.2009.11.043 |
Nаlаzi sе u kоlеkciјаmа: | TFZR Publikacije/Publications |
Prikаzаti cеlоkupаn zаpis stаvki
SCOPUSTM
Nаvоđеnjа
194
prоvеrеnо 29.04.2023.
Prеglеd/i stаnicа
26
Prоtеklа nеdеljа
8
8
Prоtеkli mеsеc
0
0
prоvеrеnо 10.05.2024.
Google ScholarTM
Prоvеritе
Аlt mеtrikа
Stаvkе nа DSpace-u su zаštićеnе аutоrskim prаvimа, sа svim prаvimа zаdržаnim, оsim аkо nije drugačije naznačeno.