José Cambra - Academia.edu (original) (raw)

Papers by José Cambra

Research paper thumbnail of Ni and RhNi catalysts supported on Zeolites L for hydrogen and syngas production by biogas reforming processes

Chemical Engineering Journal, 2014

Research paper thumbnail of Combined effect of fluorine and zinc incorporation on the HDS activity of Co-Mo catalysts

Fuel Science and Technology International

Conventional HDS-catalysts consist of Co and Mo supported on Y-Al2O3. The addition of Zn as a sec... more Conventional HDS-catalysts consist of Co and Mo supported on Y-Al2O3. The addition of Zn as a second promoter or the alumina acidification with F increase the catalitye activity in HDS of commercial feeds (Fierro et al., 1984; Boorman et al., 1984). In this paper the combined effect of both Zn and F incorporation is discussed. A series of Zn-Co-Mo catalysts

Research paper thumbnail of Hydrogen production from n-butanol over alumina and modified alumina nickel catalysts

International Journal of Hydrogen Energy

Research paper thumbnail of ChemInform Abstract: Mo-USY Zeolites for Hydrodesulfurization. Part 2. Surface Properties of Sulfided Catalysts and Activity for Thiophene Hydrodesulfurization

ChemInform, 1993

ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance t... more ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Research paper thumbnail of Foams and gels as fire protection agents - viscosity and flow characteristics

Research paper thumbnail of HDS AND HDN ACTIVITY AND CHARACTERIZATION OF NiMo -USY ZEOLITE CATALYSTS

Bulletin des Sociétés Chimiques Belges, 1995

Research paper thumbnail of Hydrodesulfurization-Hydrogenation of Ni-Containing Ultrastable HY Zeolites

Bulletin des Sociétés Chimiques Belges, 1991

Research paper thumbnail of Hydrocracking activity of NiMo-USY zeolite hydrotreating catalysts

Studies in Surface Science and Catalysis, 1997

... and P. Grange, editors 567 Hydrocracking activity of NiMo - USY zeolite hydrotreating catalys... more ... and P. Grange, editors 567 Hydrocracking activity of NiMo - USY zeolite hydrotreating catalysts B. Egla'', JF Cambra'', B. Guemez^ PL Arias'', B. Paweiec^ and ... In previous works [4-6] the HDS and HDN activities of Ni, Mo and MoNi zeolite supported catalysts were studied, and a ...

Research paper thumbnail of Advanced catalysts for coal-derived liquids hydrotreating via acidic supports

Research paper thumbnail of Glycerol conversion into H2 by steam reforming over Ni and PtNi catalysts supported on MgO modified γ-Al2O3

Research paper thumbnail of Butyraldehyde production by butanol oxidation over Ru and Cu catalysts supported on ZrO 2, TiO 2 and CeO 2

Research paper thumbnail of Acetals as Possible Diesel Additives

Economic Effects of Biofuel Production, 2011

Research paper thumbnail of Hydrometallurgical Processes Development for Zinc Oxide Production from Waelz Oxide

Waste and Biomass Valorization, 2010

Research paper thumbnail of Recent Improvement on H2 Production by Liquid Phase Reforming of Glycerol: Catalytic Properties and Performance, and Deactivation Studies

Topics in Catalysis, 2014

Research paper thumbnail of Hydrogen Production from Glycerol Over Nickel Catalysts Supported on Al2O3 Modified by Mg, Zr, Ce or La

Topics in Catalysis, 2008

Research paper thumbnail of Electrowinning studies for metallic zinc production from double leached Waelz oxide

Process Safety and Environmental Protection, 2013

ABSTRACT Waelz oxide is a zinc and lead concentrate pyrometallurgically derived from electric arc... more ABSTRACT Waelz oxide is a zinc and lead concentrate pyrometallurgically derived from electric arc furnace dust. There are clear incentives to leaching and purify this oxide to produce liquors that can be electrowinned to obtain recycled metallic zinc. This study is focused on this electrolytic zinc production from previously obtained sulphuric liquor. This liquor was obtained from double leached Waelz oxide (DLWO) throughout a hydrometallurgical process. The electrolytic liquor, after the corresponding leaching and purification stages, contains around 49 kg/m3. This liquor was fed to an electrowinning process where platinum or lead anodes and aluminium cathodes were used. After optimizing the different electrowinning critical parameters, and working at these optimal conditions, almost 88 secondary zinc kg were precipitated per each initial DLWO tonne in one-through process. The zinc purity was higher than 99.5%. After some mass balance calculations, it can be concluded that, optimizing the process configuration through internal recycling, around 210 Zn kg/DLWO t with purity near to 100% could be achieved.

Research paper thumbnail of Hydrometallurgical process development for the production of a zinc sulphate liquor suitable for electrowinning

Minerals Engineering, 2010

Research paper thumbnail of Pt monometallic and bimetallic catalysts prepared by acid sol–gel method for liquid phase reforming of bioglycerol

Journal of Molecular Catalysis A: Chemical, 2013

Research paper thumbnail of PdCu membrane applied to hydrogen production from methane

Journal of Membrane Science, 2012

ABSTRACT A PdCu membrane was characterised and then tested in complex hydrogen containing streams... more ABSTRACT A PdCu membrane was characterised and then tested in complex hydrogen containing streams from methane oxidation and reforming processes. The hydrogen permeance and stability of the PdCu membrane, prepared by electroless plating, was analysed in pure hydrogen and by thermal cycling in inert and hydrogen atmospheres. This membrane was then placed in a membrane module, into which the product gases from a catalytic reactor were fed. Methane catalytic partial oxidation (CPO) and wet-CPO were performed in the catalytic reactor. Firstly, process feed pressure and sweep gas flow were optimised and, finally, the effect of mixture compounds (CO, CO2, CH4 and H2O) on membrane behaviour was analysed. Changes in the composition of the mixture fed into the membrane module had only little influence on membrane performance during the 30 h of operation. Around 60% of the hydrogen produced in the catalytic reactor was separated in the membrane module, operating at 673 K, 3.5 bar(g) feed pressure and 550 NmL/min of sweep gas. The membrane was characterised using SEM and XRD.

Research paper thumbnail of Natural and synthetic iron oxides for hydrogen storage and purification

Journal of Materials Science, 2013

Research paper thumbnail of Ni and RhNi catalysts supported on Zeolites L for hydrogen and syngas production by biogas reforming processes

Chemical Engineering Journal, 2014

Research paper thumbnail of Combined effect of fluorine and zinc incorporation on the HDS activity of Co-Mo catalysts

Fuel Science and Technology International

Conventional HDS-catalysts consist of Co and Mo supported on Y-Al2O3. The addition of Zn as a sec... more Conventional HDS-catalysts consist of Co and Mo supported on Y-Al2O3. The addition of Zn as a second promoter or the alumina acidification with F increase the catalitye activity in HDS of commercial feeds (Fierro et al., 1984; Boorman et al., 1984). In this paper the combined effect of both Zn and F incorporation is discussed. A series of Zn-Co-Mo catalysts

Research paper thumbnail of Hydrogen production from n-butanol over alumina and modified alumina nickel catalysts

International Journal of Hydrogen Energy

Research paper thumbnail of ChemInform Abstract: Mo-USY Zeolites for Hydrodesulfurization. Part 2. Surface Properties of Sulfided Catalysts and Activity for Thiophene Hydrodesulfurization

ChemInform, 1993

ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance t... more ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Research paper thumbnail of Foams and gels as fire protection agents - viscosity and flow characteristics

Research paper thumbnail of HDS AND HDN ACTIVITY AND CHARACTERIZATION OF NiMo -USY ZEOLITE CATALYSTS

Bulletin des Sociétés Chimiques Belges, 1995

Research paper thumbnail of Hydrodesulfurization-Hydrogenation of Ni-Containing Ultrastable HY Zeolites

Bulletin des Sociétés Chimiques Belges, 1991

Research paper thumbnail of Hydrocracking activity of NiMo-USY zeolite hydrotreating catalysts

Studies in Surface Science and Catalysis, 1997

... and P. Grange, editors 567 Hydrocracking activity of NiMo - USY zeolite hydrotreating catalys... more ... and P. Grange, editors 567 Hydrocracking activity of NiMo - USY zeolite hydrotreating catalysts B. Egla'', JF Cambra'', B. Guemez^ PL Arias'', B. Paweiec^ and ... In previous works [4-6] the HDS and HDN activities of Ni, Mo and MoNi zeolite supported catalysts were studied, and a ...

Research paper thumbnail of Advanced catalysts for coal-derived liquids hydrotreating via acidic supports

Research paper thumbnail of Glycerol conversion into H2 by steam reforming over Ni and PtNi catalysts supported on MgO modified γ-Al2O3

Research paper thumbnail of Butyraldehyde production by butanol oxidation over Ru and Cu catalysts supported on ZrO 2, TiO 2 and CeO 2

Research paper thumbnail of Acetals as Possible Diesel Additives

Economic Effects of Biofuel Production, 2011

Research paper thumbnail of Hydrometallurgical Processes Development for Zinc Oxide Production from Waelz Oxide

Waste and Biomass Valorization, 2010

Research paper thumbnail of Recent Improvement on H2 Production by Liquid Phase Reforming of Glycerol: Catalytic Properties and Performance, and Deactivation Studies

Topics in Catalysis, 2014

Research paper thumbnail of Hydrogen Production from Glycerol Over Nickel Catalysts Supported on Al2O3 Modified by Mg, Zr, Ce or La

Topics in Catalysis, 2008

Research paper thumbnail of Electrowinning studies for metallic zinc production from double leached Waelz oxide

Process Safety and Environmental Protection, 2013

ABSTRACT Waelz oxide is a zinc and lead concentrate pyrometallurgically derived from electric arc... more ABSTRACT Waelz oxide is a zinc and lead concentrate pyrometallurgically derived from electric arc furnace dust. There are clear incentives to leaching and purify this oxide to produce liquors that can be electrowinned to obtain recycled metallic zinc. This study is focused on this electrolytic zinc production from previously obtained sulphuric liquor. This liquor was obtained from double leached Waelz oxide (DLWO) throughout a hydrometallurgical process. The electrolytic liquor, after the corresponding leaching and purification stages, contains around 49 kg/m3. This liquor was fed to an electrowinning process where platinum or lead anodes and aluminium cathodes were used. After optimizing the different electrowinning critical parameters, and working at these optimal conditions, almost 88 secondary zinc kg were precipitated per each initial DLWO tonne in one-through process. The zinc purity was higher than 99.5%. After some mass balance calculations, it can be concluded that, optimizing the process configuration through internal recycling, around 210 Zn kg/DLWO t with purity near to 100% could be achieved.

Research paper thumbnail of Hydrometallurgical process development for the production of a zinc sulphate liquor suitable for electrowinning

Minerals Engineering, 2010

Research paper thumbnail of Pt monometallic and bimetallic catalysts prepared by acid sol–gel method for liquid phase reforming of bioglycerol

Journal of Molecular Catalysis A: Chemical, 2013

Research paper thumbnail of PdCu membrane applied to hydrogen production from methane

Journal of Membrane Science, 2012

ABSTRACT A PdCu membrane was characterised and then tested in complex hydrogen containing streams... more ABSTRACT A PdCu membrane was characterised and then tested in complex hydrogen containing streams from methane oxidation and reforming processes. The hydrogen permeance and stability of the PdCu membrane, prepared by electroless plating, was analysed in pure hydrogen and by thermal cycling in inert and hydrogen atmospheres. This membrane was then placed in a membrane module, into which the product gases from a catalytic reactor were fed. Methane catalytic partial oxidation (CPO) and wet-CPO were performed in the catalytic reactor. Firstly, process feed pressure and sweep gas flow were optimised and, finally, the effect of mixture compounds (CO, CO2, CH4 and H2O) on membrane behaviour was analysed. Changes in the composition of the mixture fed into the membrane module had only little influence on membrane performance during the 30 h of operation. Around 60% of the hydrogen produced in the catalytic reactor was separated in the membrane module, operating at 673 K, 3.5 bar(g) feed pressure and 550 NmL/min of sweep gas. The membrane was characterised using SEM and XRD.

Research paper thumbnail of Natural and synthetic iron oxides for hydrogen storage and purification

Journal of Materials Science, 2013