Esterification reaction kinetics of acetic acid and n‐pentanol catalyzed by sulfated zirconia

2020 ◽  
Vol 52 (8) ◽  
pp. 499-512 ◽  
Author(s):  
Fabiane Hamerski ◽  
Giovana Gonçalves Dusi ◽  
Julia Trancoso Fernandes dos Santos ◽  
Vítor Renan da Silva ◽  
Fernando Augusto Pedersen Voll ◽  
...  
2013 ◽  
Vol 111 (1) ◽  
pp. 15-27 ◽  
Author(s):  
Xiufeng Lu ◽  
Hengbo Yin ◽  
Lingqin Shen ◽  
Yonghai Feng ◽  
Aili Wang ◽  
...  

2018 ◽  
Vol 8 (1) ◽  
pp. 29-38 ◽  
Author(s):  
Sulaiman I. Al-Mayman ◽  
Moustafa A. Soliman ◽  
Abdulrahman S. Al-Awadi ◽  
Yousef S. Al-Zeghayer

Author(s):  
Laura Reyes ◽  
Clémence Nikitine ◽  
Léa Vilcocq ◽  
Pascal Fongarland

The chemical equilibrium and reaction kinetics in homogeneously and heterogeneously catalyzed systems were investigated for the reversible esterification reaction of glycolic acid with ethanol. In a first approach, the thermodynamic...


2017 ◽  
Vol 43 (11) ◽  
pp. 5701-5709 ◽  
Author(s):  
Afeeq Shahid ◽  
Yousuf Jamal ◽  
Sher Jamal Khan ◽  
Jamshed Ali Khan ◽  
Bryan Boulanger

REAKTOR ◽  
2018 ◽  
Vol 18 (1) ◽  
pp. 1
Author(s):  
Megawati Megawati ◽  
Dhoni Hartanto ◽  
Catur Rini Widyastuti ◽  
Diyah Saras Wati ◽  
Eny Nurhayati

Abstract This research aims to study the reaction kinetics of esterification reaction of glycerol with free fatty acid (FFA) using calcium oxide catalyst to produce mono-diacylglycerol (MDAG) using pseudo-homogeneous approach. The effects of time and temperature on the reaction conversion were investigated simultaneously. The FFA used was from the waste of cocoa production process, while the solid catalyst used was calcium oxide from eggshell ash. The results show that the cocoa based FFA was composed of palmitic acid (49.24%), methyl stearate (1.05%), oleic acid (25.39%), and stearic acid (24.32%). The calcium oxide content in the eggshell ash was 60% w/w. At all temperatures studied (60, 70, and 80oC), as the reaction time increased, the conversion increased sharply in the first 5 minute followed by a gradual raise to an almost constant value after 20 minutes (0.844; 0.845; and 0.854, respectively). Pseudo-homogeneous second order model can describe the reaction kinetics satisfactorily. The reaction constants (k) at 60, 70, and 80oC were 0.00384, 0.003401, and 0.003518 (L/mole.minute), respectively. The effects of temperature on reaction rate obey the Arrhenius’ equation with collision factor (A) is 0.2659 (L/mole.minute) and activation energy (Ea) is 3544 J/mol. Keywords: calcium oxide; free fatty acid; glycerol; pseudo-homogeneous approach


2008 ◽  
Vol 5 (1) ◽  
pp. 135-138
Author(s):  
S. S. Sonawane ◽  
V. S. Patil ◽  
G. A. Usmani ◽  
K. S. Wani ◽  
V. R. Parate

2020 ◽  
Author(s):  
Camilo A. Mesa ◽  
Ludmilla Steier ◽  
Benjamin Moss ◽  
Laia Francàs ◽  
James E. Thorne ◽  
...  

<p><i>Operando</i> spectroelectrochemical analysis is used to determine the water oxidation reaction kinetics for hematite photoanodes prepared using four different synthetic procedures. Whilst these photoanodes exhibit very different current / voltage performance, their underlying water oxidation kinetics are found to be almost invariant. Lower photoanode performance was found to correlate with the observation of optical signals indicative of charge accumulation in mid-gap oxygen vacancy states, indicating these states do not contribute directly to water oxidation.</p>


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