Abstracts Book - IMRC 2018

• SA1-O020
NOVEL AND SIMPLE ONE-POT METHOD FOR THE SYNTHESIS OF
TITANIUM MODIFIED-CMK-3 APPLIED IN OXIDATIVE
DESULFURIZATION OF REFRACTORY ORGANOSULFUR
COMPOUNDS
Lorena Rivoira 1 , Brenda Ledesma 1 , Juliana Maria Juarez 1 , Andrea Beltramone 1
1
Universidad Tecnológica Nacional, , Argentina.
Ti-CMK-3 carbon mesoporous was prepared using a novel synthesis method.
This new method avoids the hard template synthesis used commonly. The
method developed here, allows reducing time, energy consumption and cost.
Our primary aim in this work is to evaluate the ODS activity of the Ti-modified
mesoporous carbon CMK-3, synthesized by the short time method, in order to
achieve total removal of sulfur compounds diesel fuel. The catalytic oxidation of
the sulfur compound with hydrogen peroxide was carried out in a glass batch
reactor, equipped with a magnetic stirrer, a thermometer and a condenser. In a
typical run, the solid catalyst (60 mg) was suspended under stirring (750 rpm) in
20 mL of a solution of 500 ppm of S as DBT (or other) in acetonitrile. Then,
appropriate amount of 30% aqueous H2O2 was added at constant temperature.
The experiments were performed in a three-phase liquid-liquid-solid (L (oil) –L
(solvent) –S (catalyst)) system, acetonitrile was used as solvent and dodecane as
oil phase. Solution samples were recovered at various times. The products were
analyzed by GC HP 5890 Series II with a HP-5 column and connected to FID and
PFPD detectors, after filtration and eventually decantation step. The products
were confirmed using a Shimadzu GCMS. Structural and textural
characterization of the titanium modified-mesoporous carbon was performed
by N2 adsorption, XRD, UV-Vis-DRS, XPS, Raman spectroscopy and TEM. The
characterization results indicated that the textural and structural properties of
the material synthesized by the short time method are comparable with the
properties of the material prepared by the hard template method. Ti modifiedmesoporous
carbon was synthesized by different methods in order to prepare
catalysts to be tested in the oxidative desulfurization (ODS) of sulfur
compounds. The good performance and stability of the catalyst prepared using
a novel synthesis method was attributed to well dispersed anatase nanospecies
over the high area mesoporous carbon. Main advantage of the present study is
the reduction of time and cost in the synthesis of the new material and the
applicability for ODS reactions.