Search Results - "KASZTELAN, S"

Structure, Energetics, and Electronic Properties of the Surface of a Promoted MoS2 Catalyst: An ab Initio Local Density Functional Study by Raybaud, P., Hafner, J., Kresse, G., Kasztelan, S., Toulhoat, H.

“…The determination of the local structure of cobalt- or nickel-promoted MoS2-based hydrodesulfurization catalysts is of interest for understanding the mechanism…”
Get full text

Ab Initio Study of the H2–H2S/MoS2 Gas–Solid Interface: The Nature of the Catalytically Active Sites by Raybaud, P., Hafner, J., Kresse, G., Kasztelan, S., Toulhoat, H.

“…Despite the intense research efforts directed toward understanding the microscopic mechanism of hydrodesulfurization reactions on transition-metal–sulfide…”
Get full text

Alkyldibenzothiophenes Hydrodesulfurization-Promoter Effect, Reactivity, and Reaction Mechanism by Bataille, Frédéric, Lemberton, Jean-Louis, Michaud, Philippe, Pérot, Guy, Vrinat, Michel, Lemaire, Marc, Schulz, Emmanuelle, Breysse, Michèle, Kasztelan, Slavik

“…The promoter effect of Co or Ni on the hydrodesulfurization (HDS) activity of Mo/alumina was studied by using dibenzothiophene (DBT) and…”
Get full text

Periodic trends in hydrodesulfurization: in support of the Sabatier principle by Chianelli, R.R, Berhault, G, Raybaud, P, Kasztelan, S, Hafner, J, Toulhoat, H

“…Periodic effects form the basis for progress in understanding the role of structure/function relationships in hydrodesulfurization (HDS). Theoretical results…”
Get full text

Sulfided Mo and CoMo supported on zeolite as hydrodesulfurization catalysts: transformation of dibenzothiophene and 4,6-dimethyldibenzothiophene by Bataille, F., Lemberton, J.L., Pérot, G., Leyrit, P., Cseri, T., Marchal, N., Kasztelan, S.

“…The hydrodesulfurization (HDS) of dibenzothiophene (DBT) and of 4,6-dimethyldibenzothiophene (4,6-DMDBT) was carried out on sulfided Mo and CoMo on HY…”
Get full text

Recent developments in fixed-bed catalytic residue upgrading by Kressmann, S, Morel, F, Harlé, V, Kasztelan, S

“…Atmospheric or vacuum residue can be converted into valuable distillates in fixed-bed hydroprocessing units using high reaction temperature, high hydrogen…”
Get full text

Hydrodesulfurization and hydrogenation activities of alumina- supported transition metal sulfides by Quartararo, J., Mignard, S., Kasztelan, S.

“…The catalytic activities of several alumina-supported monometallic sulfides covering a wide range of heats of formation or metal-sulfur bond energies, namely,…”
Get full text

Investigation of AOT-based microemulsions for the controlled synthesis of MoSx nanoparticles : an electron microscopy study by Marchand, K.E, Tarret, M, Lechaire, J.P, Normand, L, Kasztelan, S, Cseri, T

Get full text

New aspects of catalytic functions on sulfide catalysts by Breysse, M., Berhault, G., Kasztelan, S., Lacroix, M., Maugé, F., Perot, G.

“…The influence of Co on the acidic properties (Lewis and Brønsted) of molybdenum sulfide catalyst were determined by infrared studies of adsorbed pyridine or…”
Get full text

Initial Deactivation of Residue Hydrodemetallization Catalysts by Gualda, Géraldine, Kasztelan, Slavik

“…Used NiMo/alumina residue hydrodemetallization catalysts with bimodal pore size distribution have been prepared in batch and continuous flow reactors using a…”
Get full text

Mechanistic considerations on the involvement of dihydrointermediates in the hydrodesulfurization of dibenzothiophene-type compounds over molybdenum sulfide catalysts by MIJOIN, J, PEROT, G, BATAILLE, F, LEMBERTON, J. L, BREYSSE, M, KASZTELAN, S

“…The mechanism of the hydrodesulfurization of dibenzothiophene-type compounds involving their dihydroderivatives as intermediates was examined in the light of…”
Get full text

A descriptive model of surface sites on MoS2 (WS2) particles by KASZTELAN, S

Get full text

Quantitative Surface Analysis by Xps (X-Ray Photoelectron Spectroscopy): Application to Hydrotreating Catalysts by Beccat, P., Da Silva, P., Huiban, Y., Kasztelan, S.

“…XPS is an ideal technique to provide the chemical composition of the extreme surface of solid materials, vastly applied to the study of catalysts. In this…”
Get full text

Deuterium Tracer Studies on Hydrotreating Catalysts—Isotopic Exchange between Hydrogen and Hydrogen Sulfide on Sulfided NiMo/Al2O3 by Thomas, C., Vivier, L., Lemberton, J.L., Kasztelan, S., Pérot, G.

“…The H–D isotopic exchange between H2and D2and between H2(D2) and D2S (H2S) was studied at 80°C in a recycling reactor under a pressure of 2 bar in the presence…”
Get full text

Kinetic Modeling of the Effect of H2S and of NH3 on Toluene Hydrogenation in the Presence of a NiMo/Al2O3 Hydrotreating Catalyst. Discrimination between Homolytic and Heterolytic Models by Blanchin, S, Galtier, P, Kasztelan, S, Kressmann, S, Penet, H, Pérot, G

“…Toluene hydrogenation was studied within a wide range of hydrogen sulfide, hydrogen, toluene, and ammonia partial pressures on a standard sulfided NiMo/Al2O3…”
Get full text

Deuterium Tracer Studies on Hydrotreating Catalysts. 2. Contribution of the Hydrogen of the Alumina Support to H-D Exchange by Thomas, C., Vivier, L., Travert, A., Maugé, F., Kasztelan, S., Pérot, G.

“…H-D isotopic exchange between H2and D2was carried out at 80°C in a recycling reactor under a pressure of 2 bar over unsupported MoS2as well as on alumina…”
Get full text

Hydrogen Activation on Alumina Supported MoS2 Based Catalysts: Role of the Promoter by Lacroix, Michel, Dumonteil, Claire, Breysse, Michèle, Kasztelan, Slavik

“…The properties of alumina-supported Mo and NiMo sulfides toward a hydrogen atmosphere were investigated in order to elucidate if the synergy observed in…”
Get full text

Deuterium tracer studies on hydrotreating catalysts. 3. Influence of nickel on the rates of H2-D2 and H2S-D2 isotopic exchange by THOMAS, C, VIVIER, L, LESCANNE, M, KASZTELAN, S, PEROT, G

Get full text

Trends for mono-aromatic compounds hydrogenation over sulfided Ni, Mo and NiMo hydrotreating catalysts by QUARTARARO, J, MIGNARD, S, KASZTELAN, S

“…The relative hydrogenation activity in typical hydrotreating conditions of toluene, m‐xylene, 1,3,5‐trimethylbenzene and 1,2,4,5‐tetramethylbenzene was…”
Get full text

Aromatics saturation by sulfided NickelMolybdenum hydrotreating catalysts by Marchal, N., Mignard, S., Kasztelan, S.

“…The effect of H 2S on the rates of toluene hydrogenation of sulfided Mo, Ni, NiMo and NiMoP/alumina catalysts has been determined at 6 MPa, 350°C over a…”
Get full text