TY - JOUR
T1 - Simultaneous adsorption of 4,6-dimethyldibenzothiophene and quinoline over Nickel and Boron modified Gamma-Al2O3 adsorbent
AU - Camu, Esteban
AU - Pasten, Barbara
AU - Matus, Camila
AU - Ramirez, Fernanda
AU - Ojeda, Juan
AU - Aguila, Gonzalo
AU - BAEZA CHANDIA, PATRICIO FRANCISCO
N1 - Funding Information:
Funding: This work was financed by the CONICYT PFCHA/DOCTORADO NACIONAL/2013—21130871 and DI Consolidado PUCV N◦039369.
Publisher Copyright:
© 2020 by the authors.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/4/1
Y1 - 2020/4/1
N2 - The simultaneous adsorption of quinoline and 4,6-dimethyldibenzothiophene over adsorbents, based on alumina modified with boron and nickel under ambient temperature and pressure, was studied. The adsorbents were characterized by BET specific surface area, a potentiometric method for the determination of acid strength, electrophoretic migration, and X-ray diffraction. The results showed that the adsorbent containing nickel had better adsorption capacity than the adsorbent modified with nickel and boron, which was attributed to its greater acidity and ability to generate π-complexation between the adsorbent and the molecules. In terms of selectivity, quinoline was more adsorbed than 4,6-dimethyldibenzothiophene in all systems, due to the basic nature of quinoline. The experimental data in all cases were adjusted by three kinetic models (Yoon-Nelson, Yan and Thomas), and the regression coefficients in all models were close to one. Finally, the values of the kinetic constant obtained by the Thomas model were used to relate the adsorption capacity results.
AB - The simultaneous adsorption of quinoline and 4,6-dimethyldibenzothiophene over adsorbents, based on alumina modified with boron and nickel under ambient temperature and pressure, was studied. The adsorbents were characterized by BET specific surface area, a potentiometric method for the determination of acid strength, electrophoretic migration, and X-ray diffraction. The results showed that the adsorbent containing nickel had better adsorption capacity than the adsorbent modified with nickel and boron, which was attributed to its greater acidity and ability to generate π-complexation between the adsorbent and the molecules. In terms of selectivity, quinoline was more adsorbed than 4,6-dimethyldibenzothiophene in all systems, due to the basic nature of quinoline. The experimental data in all cases were adjusted by three kinetic models (Yoon-Nelson, Yan and Thomas), and the regression coefficients in all models were close to one. Finally, the values of the kinetic constant obtained by the Thomas model were used to relate the adsorption capacity results.
KW - 4,6-dimethyldibenzothiophene
KW - Adsorption
KW - Alumina
KW - Boron
KW - Nickel
KW - Quinoline
UR - http://www.scopus.com/inward/record.url?scp=85086731832&partnerID=8YFLogxK
U2 - 10.3390/PR8040419
DO - 10.3390/PR8040419
M3 - Article
AN - SCOPUS:85086731832
VL - 8
JO - Processes
JF - Processes
SN - 2227-9717
IS - 4
M1 - 419
ER -