Effects of EDTA and Titania in the HDS of DBT
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A series of TiO2-Al2O3 binary oxide supports were prepared by different methods and raw materials, namely using aluminum sulfate and titanium chloride (S1), γ-Alumina and titanium isopropoxide (S2), and a commercial boehmite and titanium isopropoxide (S3). Ethylenediaminetetraacetic acid (EDTA) with different EDTA/Co mole ratios (0.6, 1.2 and 1.8) was used as a chelating agent during the preparation of CoMo/Al2O3-TiO2. The samples were analyzed by XRD, BET, FT-IR and NH3-TPD experiments and tested on the dibenzothiophene (DBT) hydrodesulfurization (HDS) reaction. The results showed that the catalyst supported on S2 with EDTA/Co mole ratio of 1.2 had a HDS activity (in pseudo first order kinetic constant basis) value ~2.7 times higher to that of CoMo/Al2O3 catalyst
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L. Wu, D. Jiao, J. Wang, L. Chen, F. Cao, The role of MgO in the formation of surface active phases of CoMo/Al2O3–MgO catalysts for hydrodesulfurization of dibenzothiophene, Catal. Commun., 11 (2009) 302-305.
D.Zhang, A. Duan, Zh. Zhao, G. Wan, Zh. Gao, G. Jiang, K. Chi, K. H. Chuang, Preparation, characterization and hydrotreating performances of ZrO2–Al2O3-supported NiMo catalysts, Catal. Today, 149 (2010) 62-68.
M. S. Rana, J. Ramírez, A. Gutiérrez-Alejandre, J. Ancheyta, L. Cedeño, S. K. Maity, Support effects in CoMo hydrodesulfurization catalysts prepared with EDTA as a chelating agent, J. Catal., 246 (2007) 100-108.
H. Topsoe, B.S. Clausen, F.E. Massoth, Hydrotreating Catalysis, in Catalysis Science and Technology (Eds.: J. R. Anderson, M. Boudart) (Springer Verlag, 1996).
M. A. Lélias, E. Le Guludec, L. Mariey, J. Van Gestel, A. Travert, L. Oliviero, F. Maugé, Effect of EDTA addition on the structure and activity of the active phase of cobalt–molybdenum sulfide hydrotreatment catalysts, Catal. Today, 150 (2010) 179-185.
M. Sun, D. Nicosia, R. Prins, The effects of fluorine, phosphate and chelating agents on hydrotreating catalysts and catalysis, Catal. Today, 86 (2003) 173-189.
P. Blanchard, C. Lamonier, A. Griboval, E. Payen, New insight in the preparation of alumina supported hydrotreatment oxidic precursors: A molecular approach, Appl. Catal., A, 322 (2007) 33-45.
N. Frizi, P. Blanchard, E. Payen, P. Baranek, C. Lancelot, M. Rebeilleau, C. Dupuy, J. P. Dath, Genesis of new gas oil HDS catalysts: Study of their liquid phase sulfidation, Catal. Today, 130 (2008) 32-40.
J. A. R. Van Veen, E. Gerkema, A. M. Van der Kraan, A. Knoester, A real support effect on the activity of fully sulphided CoMoS for the hydrodesulphurization of thiophene, J. Chem. Soc., Chem. Commun., 22 (1987) 1684-1686.
F. Trejo, M. S. Rana, J. Ancheyta, CoMo/MgO–Al2O3 supported catalysts: An alternative approach to prepare HDS catalysts, Catal. Today, 130 (2008) 327-336.
J. Escobar, M. C. Barrera, J. A. De Los Reyes, M. A. Cortés, V. Santes, E. Gómez, J. G. Pacheco, Effect of Mo and Co loading in HDS catalysts supported on solvo-thermally treated ZrO2–TiO2 mixed oxides, Catal. Today, 133–135 (2008) 282-291.
K. Y. S. Ng, E. Gulari, Molybdena on titania: II. Thiophene hydrodesulfurization activity and selectivity, J. Catal., 95 (1985) 33-40.
S. A. Giraldo, A. Centeno, Isomerization and cracking under HDS conditions using γ-alumina modified with boron as catalysts support, Catal. Today, 133–135 (2008) 255-260.
J. Vakros, A. Lycourghiotis, G. A. Voyiatzis, A. Siokou, Ch. Kordulis, CoMo/Al2O3-SiO2 catalysts prepared by co-equilibrium deposition filtration: Characterization and catalytic behavior for the hydrodesulphurization of thiophene, Appl. Catal., B, 96 (2010) 496-507.
G. Busca, V. Lorenzelli, V. S. Escribano, R. Guidetti, FT-113 study of the surface properties of the spinels NiAl2O4 and CoAl2O4 in relation to those of transitional aluminas, J. Catal., 131 (1991) 167-177.
H. Knozinger, P. Ratnasamy, Catalytic Aluminas: Surface Models and Characterization of Surface Sites, Catal. Rev. - Sci. Eng., 17 (1978) 31-70.
J. Ramirez, L.Cedeño, G. Busca, The Role of Titania Support in Mo-Based Hydrodesulfurization Catalysts, J. Catal., 184 (1999) 59-67.
L.J. Bellamy, The Infra-red Spectra of Complex Molecules (Wiley and Sons, 1975).
N. Frizi, P. Blanchard, E. Payen, P. Baranek, M. Rebeilleau, C. Dupuy, J. P. Dath, Genesis of new HDS catalysts through a careful control of the sulfidation of both Co and Mo atoms: Study of their activation under gas phase, Catal. Today, 130 (2008) 272-282.
M. A. Cortés-Jácome, J. Escobar, C. Angeles Chávez, E. López-Salinas, E. Romero, G. Ferrat, J. A. Toledo-Antonio, Highly dispersed CoMoS phase on titania nanotubes as efficient HDS catalysts, Catal. Today, 130 (2008) 56-62.
J. Escobar, M. C. Barrera, J. A. de los Reyes, J. A. Toledo, V. Santes, J. A. Colin, Effect of chelating ligands on Ni–Mo impregnation over wide-pore ZrO2–TiO2, J. Mol. Catal. A: Chem., 287 (2008) 33-40.
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