Examinar Artículos, Comunicaciones, Libros por departamento (cas.) "Ingeniería química"
Now showing items 61-80 of 218
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Conical spouted bed combustor to obtain clean energy from avocado waste
(Elsevier, 2023-01)The advantages of spouted bed technology for waste treatment are linked to the high excess of renewable biomass waste generated by the large worldwide consumption of avocado. Therefore, the applicability of avocado waste ... -
Conversion of HDPE into Value Products by Fast Pyrolysis Using FCC Spent Catalysts in a Fountain Confined Conical Spouted Bed Reactor
(Wiley, 2021-10-05)Continuous catalytic cracking of polyethylene over a spent fluid catalytic cracking (FCC) catalyst was studied in a conical spouted bed reactor (CSBR) with fountain confiner and draft tube. The effect of temperature (475-600 ... -
Cost-effective upgrading of biomass pyrolysis oil using activated dolomite as a basic catalyst
(Elsevier B.V., 2019-07-19)This study deals with a continuous process on a calcined dolomite operating at atmospheric pressure and by cofeeding water for cost-effective upgrading of raw bio-oil at 400 °C and 500 °C. The distribution of carbon in ... -
Cracking of plastic pyrolysis oil over FCC equilibrium catalysts to produce fuels: Kinetic modeling
(Elsevier, 2022-05)The kinetics of the catalytic cracking of plastic pyrolysis oil (PPO) over three FCC (fluid catalytic cracking) equilibrium commercial catalysts has been modeled. The PPO comes from the fast pyrolysis of high-density ... -
Deactivation kinetics for the conversion of dimethyl ether to olefins over a HZSM-5 zeolite catalyst
(2016-11-16)A deactivation kinetic equation for the conversion of dimethyl ether (DME) to olefins (DTO process) has been established. The catalyst has been prepared with a HZSM-5 zeolite (SiO2/Al2O3 ratio of 280) agglomerated with ... -
Deactivation of Ni spinel derived catalyst during the oxidative steam reforming of raw bio-oil
(Elsevier, 2020-05-12)Deactivation of a bulk catalyst derived from NiAl2O4 spinel during the oxidative steam reforming (OSR) of raw bio-oil has been studied. The experiments were performed in a continuous system with two units in series: a ... -
Dehydrofluorination Process of Poly(vinylidene difluoride) PVdF-Based Gel Polymer Electrolytes and Its Effect on Lithium-Sulfur Batteries
(MDPI, 2023-04-14)Gel polymer electrolytes (GPEs) are emerging as suitable candidates for high-performing lithium-sulfur batteries (LSBs) due to their excellent performance and improved safety. Within them, poly(vinylidene difluoride) (PVdF) ... -
Design, characterization and evaluation of Ce-modified cobalt catalysts supported on alpha alumina in the abatement of methane emissions from natural gas engines.
(Elsevier, 2021-03-22)This work deals with the optimisation of Ce-promoted Co3O4 catalysts supported on alpha alumina for the oxidation of traces amounts of methane. Ten Co-Ce samples were synthesised by incipient wetness coimpregnation with ... -
Diffusional Behavior of New Insulating Gas Mixtures as Alternatives to the SF6-Use in Medium Voltage Switchgear
(MDPI, 2022-01-28)Regarding the use of SF6 in medium voltage switchgear (MVS), a review of alternatives was encouraged by the European Parliament in Regulation No 517/2014. This is aimed at a new regulatory change, that is expected soon, ... -
Dry reforming of methane over sub-stoichiometric NiAl2O4-mediated Ni/Al2O3 catalysts
(Elsevier, 2023-10-31)A series of Ni/Al2O3 catalysts were prepared from substoichiometric NiAl2O4 precursors (Ni/Al molar ratio between 0.5 and 0.05) were examined for the dry reforming of methane. The calcined spinel precursors and the ... -
Dynamics of carbon formation during the catalytic hydrodeoxygenation of raw bio-oil
(Royal Society of Chemistry, 2020-11-01)The formation, growth and transformation of the carbon residue (coke) deposited on the catalyst during the raw bio-oil hydrodeoxygenation have been studied. These deposits have a great impact on the overall process ... -
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Effect of calcination/reduction conditions of Ni/La2O3–αAl2O3 catalyst on its activity and stability for hydrogen production by steam reforming of raw bio-oil/ethanol
(Elsevier, 2014-04-05)The influence of calcination and reduction temperatures of Ni/La2O3–αAl2O3 catalyst used in the steam reforming of raw bio-oil was studied in the 550–850 °C range. The experiments were conducted by continuously feeding a ... -
Effect of CeO2 and MgO promoters on the performance of a Ni/Al2O3 catalyst in the steam reforming of biomass pyrolysis volatiles
(Elsevier B.V., 2019-10-25)A Ni/Al2O3 catalyst has been modified incorporating CeO2 and MgO promoters in order to improve its performance in the steam reforming of biomass pyrolysis volatiles. Ni/Al2O3, Ni/CeO2-Al2O3 and Ni/MgO-Al2O3 catalysts have ... -
Effect of La2O3 promotion on a Ni/Al2O3 catalyst for H2 production in the inline biomass pyrolysis-reforming
(Elsevier B.V., 2019-11-19)[EN] The effect of La2O3 addition on a Ni/Al2O3 catalyst has been studied in the biomass pyrolysis and in-line catalytic steam reforming process. The results obtained using homemade catalysts (Ni/Al2O3 and Ni/La2O3-Al2O3) ... -
Effect of operating conditions on the hydrodynamics in fountain confined conical spouted beds
(Elsevier, 2021-06-01)La estabilidad y el funcionamiento de los spouted beds se ven muy afectados por las características de las partículas. En consecuencia, se ha estudiado el comportamiento hidrodinámico de los spouted beds cónicos para ... -
Effect of reaction conditions on the deactivation by coke of a NiAl2O4 spinel derived catalyst in the steam reforming of bio-oil
(Elsevier, 2021-11-15)[EN]The steam reforming of bio-oil is a promising and economically feasible technology for the sustainable H-2 production, yet with the main challenge of designing highly active and stable catalysts. This work aimed to ... -
Effect of Residual Na+ on the Combustion of Methane over Co3O4 Bulk Catalysts Prepared by Precipitation
(MDPI, 2018-09-29)The effect of the presence of residual sodium (0.4 %wt) over a Co3O4 bulk catalyst for methane combustion was studied. Two samples, with and without residual sodium, were synthesized by precipitation and thoroughly ... -
Effect of the synthesis method on the performance of Ni-CeO2-ZrO2 catalysts for the hydrogenolysis of glycerol with endogenous hydrogen
(Elsevier B.V., 2023-09-21)In this work, we investigated the influence of the synthesis method of Ni-based CeZr catalysts on their physicochemical and catalytic properties in the hydrogenolysis (HDO) of glycerol with H2 in-situ produced by the ... -
Effect of water and methanol concentration in the feed on the deactivation of In2O3-ZrO2/SAPO-34 catalyst in the conversion of CO2/CO to olefins by hydrogenation
(Elsevier, 2023-08)On account of the superior performance of In2O3-ZrO2/SAPO-34 tandem catalyst in the direct synthesis of olefins from CO, CO2 and CO/CO2 mixture by hydrogenation, it is interesting to establish the conditions to avoid its ...