Search Results - "Santos, J.B.O."

Influence of copper on nickel-based catalysts in the conversion of glycerol by Miranda, B.C., Chimentão, R.J., Szanyi, J., Braga, A.H., Santos, J.B.O., Gispert-Guirado, F., Llorca, J., Medina, F.

“…•FTIR of adsorbed CO reveals that Cu asserts both geometric and electronic effects on Ni.•As the Ni/Cu atomic ratio decreases the dehydration–dehydrogenation…”
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Synthesis of tungsten carbide on Al-SBA-15 mesoporous materials by carburization by Álvarez, M.G., Chimentão, R.J., Tichit, D., Santos, J.B.O., Dafinov, A., Modesto-López, L.B., Rosell-Llompart, J., Güell, E.J., Gispert-Guirado, F., Llorca, J., Medina, F.

“…Aluminum was incorporated into SBA-15 supports at molar ratios Si/Al = 10 and 2 by the pH-adjusting method. The calcined mesoporous Al-SBA-15 supports, as well…”
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Catalytic partial oxidation and steam reforming of methane on La2O3–Al2O3 supported Pt catalysts as observed by X-ray absorption spectroscopy by Rocha, K.O., Santos, J.B.O., Meira, D., Pizani, P.S., Marques, C.M.P., Zanchet, D., Bueno, J.M.C.

“…[Display omitted] ► Pt/La2O3–Al2O3 catalysts were studied by XANES under partial oxidation of methane (POM). ► Pt/La2O3–Al2O3 catalysts were studied by EXAFS…”
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Identifying the adsorbed active intermediates on Pt surface and promotion of activity through the redox CeO 2 in preferential oxidation of CO in H 2 by Paz, D.S., Damyanova, S., Borges, L.R., Santos, J.B.O, Bueno, J.M.C.

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Conversion of glycerol over 10%Ni/γ-Al2O3 catalyst by Miranda, B.C., Chimentão, R.J., Santos, J.B.O., Gispert-Guirado, F., Llorca, J., Medina, F., Bonillo, F. López, Sueiras, J.E.

“…Proposed general reaction pathways for glycerol conversion. •The stability and catalytic performance were modulated by the nickel particle size.•Deactivation…”
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Catalytic valorization of glycerol in the absence of external hydrogen: Effect of the Cu/ZrO2 catalyst mass and solvent by Colmenares-Zerpa, Julio, Gajardo, Jorge, González, Giancarlo, Fierro, J.L.G., Peixoto, Andreia F., Junkaew, Anchalee, Suthirakun, Suwit, Santos, J.B.O., Picinini, Monize, Urquieta-Gonzalez, E.A., Hirunsit, Pussana, Chimentão, Ricardo J.

“…The glycerol valorization by heterogeneous catalysis to produce high-value-added chemicals is mainly carried out in the presence of high pressures of molecular…”
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High zirconium loads in Zr-SBA-15 mesoporous materials prepared by direct-synthesis and pH-adjusting approaches by Colmenares-Zerpa, Julio, Gajardo, Jorge, Peixoto, A.F., Silva, D.S.A., Silva, J.A., Gispert-Guirado, F., Llorca, J., Urquieta-Gonzalez, E.A., Santos, J.B.O., Chimentão, R.J.

“…SBA-15 is a material with interesting characteristics associated with the size, order, uniformity, and pores distribution. However, the absence of acidity in…”
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Identifying the adsorbed active intermediates on Pt surface and promotion of activity through the redox CeO2 in preferential oxidation of CO in H2 by Paz, D.S., Damyanova, S., Borges, L.R., Santos, J.B.O, Bueno, J.M.C.

“…Different mechanisms for activation of reagents molecules for non-promoted and promoted Pt catalysts with ceria in preferential oxidation of CO in H2. [Display…”
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Catalytic performance of zinc-supported copper and nickel catalysts in the glycerol hydrogenolysis by Chimentão, R.J., Miranda, B.C., Ruiz, D., Gispert-Guirado, F., Medina, F., Llorca, J., Santos, J.B.O.

“…Gas-phase catalytic conversion of glycerol to value added chemicals was investigated over zinc-supported copper and nickel catalysts. The addition of aluminum…”
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Sources of deactivation during glycerol conversion on Ni/γ-Al2O3 by Chimentão, R.J., Miranda, B.C., Szanyi, J., Sepulveda, C., Santos, J.B.O., Correa, J.V.S., Llorca, J., Medina, F.

“…High resolution transmission electron microscopy images of Ni/γ-Al2O3 catalyst after reaction. Fourier transform images are included. [Display omitted] •NiO…”
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Catalytic Decomposition of Hydrazine on Tungsten Carbide: The Influence of Adsorbed Oxygen by Santos, J.B.O., Valença, G.P., Rodrigues, J.A.J.

“…Passivated and nonpassivated tungsten carbide (WC) powders were prepared by a temperature-programmed reaction and used as catalysts in the hydrazine…”
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