Listar Departamento de Química Orgánica por autor "e859b9d9-098d-4a48-b3fc-b7475624aaba"
Mostrando ítems 1-18 de 18
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A Review on Green Hydrogen Valorization by Heterogeneous Catalytic Hydrogenation of Captured CO2 into Value-Added Products
Estevez, Rafael; Aguado-Deblas, Laura; Bautista, Felipa M.; López Tenllado, Francisco Javier; Romero, Antonio A.; Luna, Diego (MDPI, 2022)The catalytic hydrogenation of captured CO2 by different industrial processes allows obtaining liquid biofuels and some chemical products that not only present the interest of being obtained from a very low-cost raw material ... -
Acetone Prospect as an Additive to Allow the Use of Castor and Sunflower Oils as Drop-In Biofuels in Diesel/Acetone/Vegetable Oil Triple Blends for Application in Diesel Engines
Aguado-Deblas, Laura; Hidalgo-Carrillo, J.; Bautista, Felipa M.; Luna, Diego; Luna, Carlos; Calero, Juan; Posadillo, Alejandro; Romero, Antonio A.; Estévez, R. (MDPI, 2020)The present paper investigates the feasibility of using acetone (ACE) in triple blends with fossil diesel (D) and straight vegetable oils (SVOs) as alternative fuel for diesel engines. In this respect, ACE is selected as ... -
Advanced Biofuels from ABE (Acetone/Butanol/Ethanol) and Vegetable Oils (Castor or Sunflower Oil) for Using in Triple Blends with Diesel: Evaluation on a Diesel Engine
Aguado-Deblas, Laura; López Tenllado, Francisco Javier; Luna, Diego; Bautista, Felipa M.; Romero, Antonio A.; Estevez, Rafael (MDPI, 2022)From a technical and economic point of view, our aim is to provide viable solutions for the replacement of fossil fuels which are currently used in internal combustion diesel engines. In this research, two new biofuels ... -
An Overview of the Production of Oxygenated Fuel Additives by Glycerol Etherification, Either with Isobutene or tert-Butyl Alcohol, over Heterogeneous Catalysts
Estévez, R.; Aguado-Deblas, Laura; Luna, Diego; Bautista, Felipa M. (MDPI, 2019)Biodiesel production has considerably increased in recent decades, generating a surplus of crude glycerol, which is the main drawback for the economy of the process. To overcome this, many scientists have directed their ... -
Biodiesel at the Crossroads: A Critical Review
Estévez, R.; Aguado-Deblas, Laura; Bautista, Felipa M.; Luna, Diego; Luna, Carlos; Calero, Juan; Posadillo, Alejandro; Romero, Antonio A. (MDPI, 2019)The delay in the energy transition, focused in the replacement of fossil diesel with biodiesel, is mainly caused by the need of reducing the costs associated to the transesterification reaction of vegetable oils with ... -
Biodiesel Is Dead: Long Life to Advanced Biofuels—A Comprehensive Critical Review
Estévez, R.; Aguado-Deblas, Laura; López Tenllado, Francisco Javier; Luna, Carlos; Calero, Juan; Romero, Antonio A.; Bautista, Felipa M.; Luna, Diego (MDPI, 2022)Many countries are immersed in several strategies to reduce the carbon dioxide (CO2) emissions of internal combustion engines. One option is the substitution of these engines by electric and/or hydrogen engines. However, ... -
Biofuels from Diethyl Carbonate and Vegetable Oils for Use in Triple Blends with Diesel Fuel: Effect on Performance and Smoke Emissions of a Diesel Engine
Aguado-Deblas, Laura; Hidalgo-Carrillo, J.; Bautista, Felipa M.; Luna, Carlos; Calero, Juan; Posadillo, Alejandro; Romero, Antonio A.; Luna, Diego; Estévez, R. (MDPI, 2020)The main objective of this work is to contribute to a gradual replacement process of fossil diesel (D) with biofuels composed by diethyl carbonate (DEC) and either sunflower or castor oil, as straight vegetable oils (SVOs). ... -
Current research on Green Ammonia (NH3) as a potential vector energy for power storage and engine fuels: a review
Estevez, Rafael; López-Tenllado, Francisco J.; Aguado-Deblas, Laura; Bautista, Felipa M.; Romero, Antonio A.; Luna, Diego (MDPI, 2023)Considering the renewable electricity production using sustainable technologies, such as solar photovoltaics or wind turbines, it is essential to have systems that allow for storing the energy produced during the periods ... -
Enzymatic Production of Ecodiesel by Using a Commercial Lipase CALB, Immobilized by Physical Adsorption on Mesoporous Organosilica Materials
Luna, Carlos; Gascón-Pérez, Victoria; López Tenllado, Francisco Javier; Bautista, Felipa M.; Verdugo-Escamilla, Cristóbal; Aguado-Deblas, Laura; Calero, Juan; Romero, Antonio A.; Luna, Diego; Estévez, R. (MDPI, 2021)The synthesis of two biocatalysts based on a commercial Candida antarctica lipase B, CALB enzyme (E), physically immobilized on two silica supports, was carried out. The first support was a periodic mesoporous organosilica ... -
Estudio de catalizadores heterogéneos ácidos para la obtención de aditivos oxigenados derivados de la biomasa y su aplicación en motores de combustión
Aguado-Deblas, Laura (Universidad de Córdoba, UCOPress, 2022)La presente Tesis Doctoral abarca la síntesis y caracterización de catalizadores de naturaleza ácida con diferentes propiedades estructurales y texturales, y su aplicación en la reacción de eterificación de glicerol con ... -
Evaluation of Dimethyl Carbonate as Alternative Biofuel. Performance and Smoke Emissions of a Diesel Engine Fueled with Diesel/Dimethyl Carbonate/Straight Vegetable Oil Triple Blends
Aguado-Deblas, Laura; Hidalgo-Carrillo, J.; Bautista, Felipa M.; Luna, Carlos; Calero, Juan; Posadillo, Alejandro; Romero, Antonio A.; Luna, Diego; Estévez, R. (MDPI, 2021)Dimethyl carbonate (DMC) is an interesting blending component for diesel fuel (D) owing to the high oxygen content (53 wt.%) and the absence of C–C bonds in its structure. Moreover, DMC can be produced from CO2 and methanol, ... -
Hydrogenation of α,β-Unsaturated Carbonyl Compounds over Covalently Heterogenized Ru(II) Diphosphine Complexes on AlPO4-Sepiolite Supports
Caballero, Verónica; Estévez, R.; Luna, Diego; Bautista, Felipa M.; Romero, Antonio A.; Aguado-Deblas, Laura; Hidalgo-Carrillo, J.; Romero, Isabel (MDPI, 2021)In this work, the covalent immobilization of two ruthenium(II) complexes, i.e., [RuIICl (bpea){(S)(-)(BINAP)}](BF4), 1, and [RuIICl(bpea)(DPPE)](BF4), 2, where BINAP = 2,2’-bis(diphenylphosphino)-1,1’-binaphthyl and DPPE ... -
Internal combustion engines and carbon-neutral fuels: a perspective on emission neutrality in the European Union
Estévez, R.; Aguado-Deblas, Laura; López Tenllado, Francisco Javier; Bautista, Felipa M.; Romero, Antonio A.; Luna, Diego (MDPI, 2024)Nowadays, there is an intense debate in the European Union (EU) regarding the limits to achieve the European Green Deal, to make Europe the first climate-neutral continent in the world. In this context, there are also ... -
Outlook for Direct Use of Sunflower and Castor Oils as Biofuels in Compression Ignition Diesel Engines, Being Part of Diesel/Ethyl Acetate/Straight Vegetable Oil Triple Blends
Aguado-Deblas, Laura; Estévez, R.; Hidalgo-Carrillo, J.; Bautista, Felipa M.; Luna, Carlos; Calero, Juan; Posadillo, Alejandro; Romero, Antonio A.; Luna, Diego (MDPI, 2020)Today, biofuels are indispensable in the implementation of fossil fuels replacement processes. This study evaluates ethyl acetate (EA) as a solvent of two straight vegetable oils (SVOs), castor oil (CO), and sunflower oil ... -
Performance and Emission Quality Assessment in a Diesel Engine of Straight Castor and Sunflower Vegetable Oils, in Diesel/Gasoline/Oil Triple Blends
Estévez, R.; Aguado-Deblas, Laura; Posadillo, Alejandro; Hurtado, Beatriz; Bautista, Felipa M.; Hidalgo, José M.; Luna, Carlos; Calero, Juan; Romero, Antonio A.; Luna, Diego (MDPI, 2019)This research evaluates the possibility of using straight oils such as castor oil, which is not suitable for food use, and sunflower oil, used as a standard reference for waste cooking oils, in blends with gasoline as ... -
Study on the Performance and Emissions of Triple Blends of Diesel/Waste Plastic Oil/Vegetable Oil in a Diesel Engine: Advancing Eco-Friendly Solutions
Estevez, Rafael; Aguado-Deblas, Laura; López-Tenllado, Francisco J.; Bautista, Felipa M.; Romero, Antonio A.; Luna, Diego (MDPI, 2024)To provide technical and economical solutions regarding management of plastic waste, which is constantly increasing worldwide, this study addresses the possibility of using plastic oils (PO) obtained from these plastic ... -
Sulfonated carbons from olive stones as catalysts in the microwave-assisted etherification of glycerol with tert-butyl alcohol
Estévez, R.; Aguado-Deblas, Laura; Montes, Vicente; Caballero, Álvaro; Bautista, Felipa M. (Elsevier, 2020)Sulfonated carbons have been prepared from an important waste in Andalusia, the olive stones. The sulfonic acid groups incorporation has been made by sulfuric acid treatment and different conditions have been tested, i.e., ... -
Sulfonated organosilica-aluminum phosphates as useful catalysts for acid-catalyzed reactions: Insights into the effect of synthesis parameters on the final catalyst
Aguado-Deblas, Laura; Estévez, R.; López Tenllado, Francisco Javier; Luna, Diego; Bautista, Felipa M. (Elsevier, 2022)The synthesis, by a sol-gel method, of organosilica-aluminum phosphates, (X)-AlPO(Y)-(Z), using three different silica precursors (X) 2-(4-chlorosulfonylphenyl)ethyltrimethoxysilane (C), 3-(mercaptopropyl)trimethoxysilane ...