TY - JOUR
T1 - Integrated desulfurization of diesel by combination of metal-free oxidation and product removal by molecularly imprinted polymers
AU - Ferreira, Joana P.
AU - Viveiros, Raquel
AU - Lourenço, Anita
AU - Soares Da Silva, Mara
AU - Rosatella, Andreia
AU - Casimiro, Teresa
AU - Afonso, Carlos A. M.
N1 - The authors are grateful to Fundacao para a Ciencia e Tecnologia (FCT-Lisbon), FSE and FEDER for financial support through projects PTDC/QUI-QUI/102460/2008, PEst-OE/SAU/UI4013/2011, PTDC/QEQ-PRS/2757/2012 and PEst-C/EQB/LA0006/2013. RV acknowledges FCT-Lisbon and Hovione for BDE doctoral grant SFRH/BDE/51907/2012.
PY - 2014
Y1 - 2014
N2 - The production of ultra-low-sulfur diesel is an important worldwide demand. In this work a novel integrated method for desulfurization of diesel is proposed based on the combination of Brønsted acid catalyzed oxidation and the selective removal of the oxidized products using a molecularly imprinted polymer (MIP) produced in supercritical carbon dioxide (scCO2). The biphasic oxidation reaction of dibenzothiophene sulfone (DBT), as model substrate, and H2O2 as oxidant, was optimized by testing different acid catalysts, and also different phase transfer catalysts (PTC), including two different ionic liquids (ILs) trihexyl(tetradecyl)phosphoniumchloride [P6,6,6,14]Cl and Aliquat®. The products of the efficient oxidation of DBT, dibenzothiophene sulfoxide (DBTSO) and dibenzothiophene sulfone (DBTSO2), were then selectively removed from real diesel using the MIP.
AB - The production of ultra-low-sulfur diesel is an important worldwide demand. In this work a novel integrated method for desulfurization of diesel is proposed based on the combination of Brønsted acid catalyzed oxidation and the selective removal of the oxidized products using a molecularly imprinted polymer (MIP) produced in supercritical carbon dioxide (scCO2). The biphasic oxidation reaction of dibenzothiophene sulfone (DBT), as model substrate, and H2O2 as oxidant, was optimized by testing different acid catalysts, and also different phase transfer catalysts (PTC), including two different ionic liquids (ILs) trihexyl(tetradecyl)phosphoniumchloride [P6,6,6,14]Cl and Aliquat®. The products of the efficient oxidation of DBT, dibenzothiophene sulfoxide (DBTSO) and dibenzothiophene sulfone (DBTSO2), were then selectively removed from real diesel using the MIP.
UR - http://www.scopus.com/inward/record.url?scp=84908566769&partnerID=8YFLogxK
U2 - 10.1039/c4ra11666f
DO - 10.1039/c4ra11666f
M3 - Article
AN - SCOPUS:84908566769
SN - 2046-2069
VL - 4
SP - 54948
EP - 54952
JO - RSC Advances
JF - RSC Advances
IS - 98
ER -