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Browsing by Author "Baeza P."

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Adsorption of thiophene and dibenzothiophene on highly dispersed Cu/ZrO 2 adsorbents

Baeza P.; Aguila G.; Vargas G.; Ojeda J.; Araya P. (2014-04-04)

The effect of surface area of copper/zirconia adsorbents on the adsorption of thiophene (T) and dibenzothiophene (DBT) was studied. Adsorbents were prepared with different loads of copper (1-6%), using as support zirconias ...
Biodesulfurization of gas oil using inorganic supports biomodified with metabolically active cells immobilized by adsorption

Dinamarca M.A.; Ibacache-Quiroga C.; Baeza P.; Galvez S.; Villarroel M.; Olivero P.; Ojeda J. (2014-04-04)

The immobilization of Pseudomonas stutzeri using adsorption on different inorganic supports was studied in relation to the number of adsorbed cells, metabolic activity and biodesulfurization (BDS). The electrophoretic ...
Deep desulfurization by adsorption of 4,6-dimethyldibenzothiophene, study of adsorption on different transition metal oxides and supports

Aparicio F.; Camu E.; Villarroel M.; Escalona N.; Baeza P. (2014-04-04)

In this work the adsorption of 4,6-dimethyldibenzothiophene (4,6-DMDBT) on different supports (SiO2, Al2O3, zeolite 4A, zeolite 13X, natural zeolite, and activated carbon), incorporating on its surface different first ...
Effect of fluorine in the synergism co-mo via hydrogen spillover on the hydrodesulphurization of refractory molecules

Mendez A.; Villarroel M.; Camu E.; Gil-Llambias F.J.; Avila P.; Baeza P. (2014-04-04)

The influence of fluorine concentration on the synergism between Co/γ-Al2O3 and Mo/γ-Al2O3 stacked beds separated by 3-mm of γ-Al2O3Fx (x = 0 - 2.5%), in the hydrodesulphurization of refractory molecules contained in gasoil, ...
Effect of liquid spatial velocity on M D

Villarroel M.; Baeza P.; Gil-Llambias F.J. (2014-04-04)

A study is made of Mn//Mo, Fe//Mo, Co//Mo, Ni//Mo, Cu//Mo or Zn//Mo stacked beds systems, separated by g-AI 2O 3, in the gas-oil hydrodesulphurization reaction, under experimental conditions similar to those industry. The ...
Effect of mo content in mo(x)/g-AL2O3 catalysts over the conversion of 2-methoxyphenol as lignin-derivates components

Leiva K.; Sepulveda C.; Garcia R.; Fierro J.L.G.; Reyes P.; Ghampson I.T.; Baeza P.; Villarroel M.; Escalona N. (2014-04-04)

ABSTRACT The effect of Mo loading (10, 12, 15, 17 and 20 wt.%) on the physicochemical properties and reactivities of Mo(x)/g-Al2O3 sulfide catalysts for the conversion of 2-methoxyphenol at 573 K and 5 MPa of hydrogen ...
Effect of P content in the conversion of guaiacol over Mo/γ-Al 2O3 catalysts

Leiva K.; Sepulveda C.; Garcia R.; Fierro J.L.G.; Aguila G.; Baeza P.; Villarroel M.; Escalona N. (2014-04-04)

The effect of phosphorus content on Mo/γ-Al2O3 sulfide catalysts for the conversion of 2-methoxyphenol (guaiacol) was studied. The catalysts were prepared by successive impregnation of P (0.5, 1.0, 2.0. 3.0 and 5.0 wt.%) ...
Optimizing the biodesulfurization of gas oil by adding surfactants to immobilized cell systems

Dinamarca M.A.; Rojas A.; Baeza P.; Espinoza G.; Ibacache-Quiroga C.; Ojeda J. (2014-04-04)

Biodesulfurization is a microbial biocatalytic process that removes sulfur from hydrocarbons. Because this bioprocess can be influenced by substrate bioavailability, we studied the effect of natural and synthetic surfactants ...
Phosphorus effect on Co//Mo and Ni//Mo synergism in hydrodesulphurization catalysts

Villarroel M.; Baeza P.; Gracia F.; Escalona N.; Avila P.; Gil-Llambias F.J. (2014-04-04)

The influence of P concentration on the synergism between Co/γ-Al 2O 3 or Ni/γ-Al 2O 3 and Mo/γ-Al 2O 3 stacked beds separated by a 3-mm stack of P x/γ-Al 2O 3 is studied in the hydrodesulphurization of gasoil under operating ...
Synergism in alumina-supported noble metals and molybdenum stacked-bed catalysts via spillover hydrogen in gas-oil hydrodesulphurization

Villarroel M.; Mendez A.; Aguila G.; Escalona N.; Baeza P.; Gil-Llambias F. (2014-04-04)

A study is made of Ru/γ-Al 2O 3//Mo/γ- Al 2O 3, Rh/γ-Al 2O 3//Mo/γ- Al 2O 3, Pd/γ-Al 2O 3//Mo/γ- Al 2O 3, and Pt/γ-Al 2O 3//Mo/ γ-Al 2O 3 stacked beds, separated by SiO 2, in the gas-oil hydrodesulphurization reaction. ...
Synergisms via hydrogen spillover between some transition metals during hydrodesulphurization: Increased activity towards conversion of refractory molecules

Villarroel M.; Camu E.; Escalona N.; Avila P.; Rasmussen S.B.; Baeza P.; Gil-Llambias F. (2014-04-04)

The synergism effects by hydrogen spillover on M D//Re stacked bed systems and M D (M D = Mn/γ-Al 2O 3, Fe/γ-Al 2O 3, Co/γ-Al 2O 3, Ni/γ-Al 2O 3, Cu/γ-Al 2O 3 or Zn/γ-Al 2O 3) on two real diesel feeds with different sulphur ...

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