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Open AccessCitric acid-assisted synthesis of γ-alumina-supported high loading CoMo sulfide catalysts for the hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) reactions
In the present work, the effect of the citric acid (i.e., adsorption-assisting agent) and the thermal treatment over the citric acid-synthesized CoMo catalyst precursors were investigated. The catalysts were p...
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Article
Comparing the hydrodesulfurization reaction of thiophene on γ-Al2O3 supported CoMo, NiMo and NiW sulfide catalysts
The thiophene hydrodesulfurization (HDS) reaction on γ-Al2O3 supported CoMo, NiMo and NiW sulfide catalysts was compared in order to gain insight into the promoter effect on direct desulfurization (DDS) and hydro...
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Article
On the structure and surface properties of NiO/MgO–La2O3 catalyst: Influence of the support composition and preparation method
This work addresses the effect of catalyst preparation method and the carrier compositions (MgO–La2O3) over the NiO-support interaction, which affect the reducibility, textural properties and the different oxygen...
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Article
Influence of lanthanum carbonate phases of Ni/La0.98Sr0.02O x catalyst over the oxidative transformation of methane
This work combines the advantages of ~2 mol.% Sr/La2O3 (i.e. La0.98Sr0.02O x ) for OCM (oxidative coupling of methane) with well-dispersed nickel over metal oxides for POM (parti...
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Article
Rationalizing the catalytic performance of γ-alumina-supported Co(Ni)–Mo(W) HDS catalysts prepared by urea-matrix combustion synthesis
A comparative study of the influence of Co (or Ni) promoter loadings and the effect of different sulfurizing agents and sulfurizing temperatures on the structure, morphology and catalytic performance of Mo- or...
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Article
Characterization and catalytic performance of Co, Ni and W trimetallic carbides
New wolframite-type oxides (Co1-xNixWO4) with various compositions havebeen prepared by a combustion method and carburized using a temperature-programmed reaction. Catalytic performance was evaluated in a contin...
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Article
Synthesis of light alkenes on manganese promoted iron and iron-cobalt Fischer-Tropsch catalysts
The light alkenes formation capacity and the interaction of Mn with Fe and Fe-Co of Fischer-Tropsch catalysts have been studied. The samples were characterized by X-ray diffraction and temperature-programmed r...
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Article
Methane Conversion Over Sr2+/La2O3 Catalyst Modified with Nickel and Copper
Methane transformation over Ni and Cu modified Sr2+/La2O3 catalysts has been studied. These species favor formation of reducible mixed oxides and change the surface reactivity of the Sr2+/La2O3 system, modifying ...