Listar DQO-Artículos, capítulos... por autor "2721132a-1383-403c-8438-0cd49ce97b8d"
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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 ... -
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 ... -
Application of Enzymatic Extracts from a CALB Standard Strain as Biocatalyst within the Context of Conventional Biodiesel Production Optimization
Luna, Diego; Bautista, Felipa M.; Luna, Carlos; Calero, Juan; Posadillo, Alejandro; Romero, Antonio A.; Sancho, Enrique D.; Estévez, R. (MDPI, 2017)The application of biocatalysts in the transesterification process of triglycerides (TG) allows integrating the glycerol in the form of monoglyceride (MG), sharply increasing the yield and the environmental sustainability ... -
Bio-Templating: An Emerging Synthetic Technique for Catalysts. A Review
Herrera-Beurnio, M. Carmen; Hidalgo-Carrillo, J.; Martín-Gómez, Juan; Martín-Gómez, Juan; Estévez, R.; Urbano, Francisco José; Marinas, Alberto (MDPI, 2021)In the last few years, researchers have focused their attention on the synthesis of new catalyst structures based on or inspired by nature. Biotemplating involves the transfer of biological structures to inorganic materials ... -
Biochars from olive stones as Carbonaceous support in Pt/TiO2-Carbon Photocatalysts and application in hydrogen production from aqueous glycerol photoreforming
Escamilla, Juan Carlos; Hidalgo-Carrillo, J.; Martín-Gómez, Juan; López Tenllado, Francisco Javier; Estévez, R.; Marinas, Alberto; Urbano, Francisco José (MDPI, 2023)Several biochars were synthesized from olive stones and used as supports for TiO2, as an active semiconductor, and Pt as a co-catalyst (Pt/TiO2-PyCF and Pt/TiO2-AC). A third carbon-supported photocatalyst was prepared from ... -
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). ... -
Controlled photodeposition of Pt onto TiO2-g-C3N4 systems for photocatalytic hydrogen production
Herrera-Beurnio, M. Carmen; López Tenllado, Francisco Javier; Hidalgo-Carrillo, J.; Martín-Gómez, Juan; Estévez, R.; Castillo-Rodríguez, Miguel; Miguel, Gustavo de; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2022)Platinum (0.5 wt. %) was photodeposited on g-C3N4-TiO2 systems using UV or Vis light. Different absorption by semiconductors seemed to somehow influence resulting platinum particle size and distribution. Thus, lower platinum ... -
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 ... -
EPR and CV studies cast further light on the origin of the enhanced hydrogen production through glycerol photoreforming on CuO:TiO2 physical mixtures
Martín-Gómez, Juan; Hidalgo-Carrillo, J.; Montes, Vicente; Estévez, R.; Escamilla, Juan Carlos; Marinas, Alberto; Urbano, Francisco José (Elsevier, 2021)Different CuO nanoparticles were synthesized and tested in CuO:TiO2 physical mixtures for hydrogen production through glycerol photoreforming. CuO alone was inactive whereas its presence in CuO:TiO2 mixtures significantly ... -
Estudios preliminares de la reacción de eterificación de la glicerina con nbutanol en fase líquida
Genuino, H.C.; Luna, Diego; Weckhuysen, B.M.; Bautista, Felipa M.; López-Pedrajas, S.; Estévez, R. (Universidad de Córdoba, 2017) -
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, ... -
Fourth generation synthesis of solketal by glycerol acetalization with acetone: A solar-light photocatalytic approach
Hidalgo-Carrillo, J.; Estévez, R.; López Tenllado, Francisco Javier; Bautista, Felipa M.; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2021)Background: Biomass is the only renewable alternative to fossil fuels to produce chemicals. In this sense, glycerol is an important biomass-derived platform chemical obtained as a by-product during biodiesel generation. ... -
Glycerol photoreforming for photocatalytic hydrogen production on binary and ternary Pt-g-C3N4-TiO2 systems: a comparative study
Herrera-Beurnio, M. Carmen; López-Tenllado, Francisco J.; Hidalgo-Carrillo, J.; Martín-Gómez, Juan; Estévez, R.; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2024)Photocatalytic hydrogen production using two sacrificial agents (triethanolamine and glycerol) was conducted on several binary (Pt/TiO2 and Pt/g-C3N4) and ternary systems (Pt on a heterojunction between TiO2 and g-C3N4 ... -
Hydrogen photo-production from glycerol on platinum, gold and silver-modified TiO2-USY62 catalysts
López Tenllado, Francisco Javier; Estévez, R.; Hidalgo-Carrillo, J.; López Fernández, Silvia; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2022)In this work, photocatalysts consisting of TiO2 supported on zeolite (USY62) were synthesized by sol-gel method and, subsequently, a noble metal (Pt, Au, or Ag) was incorporated by impregnation or photodeposition. Zeolite-TiO2 ... -
Hydrogen photoproduction on TiO2-CuO artificial olive leaves
Martín-Gómez, Juan; Hidalgo-Carrillo, J.; Estévez, R.; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2021)Olive leaves were used as biotemplates to synthesize diverse TiO2-CuO solids. A successful replication of trichomes and internal channels was evidenced by SEM, whereas a good dispersion of Cu and Ti atoms was observed by ... -
Hydrogen Production through Glycerol Photoreforming on TiO2/Mesoporous Carbon: Influence of the Synthetic Method
Escamilla, Juan Carlos; Hidalgo-Carrillo, J.; Martín-Gómez, Juan; Estévez, R.; Montes, Vicente; Cosano, Daniel; Urbano Navarro, Francisco José; Marinas, Alberto (MDPI, 2020)This article explores the effect of the synthetic method of titanium dioxide (TiO2)/C composites (physical mixture and the water-assisted/unassisted sol-gel method) on their photocatalytic activity for hydrogen production ... -
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 ... -
Influence of sacrificial agent on Cu photodeposition over TiO2/MCH composites for photocatalytic hydrogen production
Martín-Gómez, Juan; Escamilla, Juan Carlos; Hidalgo-Carrillo, J.; López Tenllado, Francisco Javier; Estévez, R.; Herrera-Beurnio, M. Carmen; Castillo-Rodríguez, Miguel; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2022)Titanium (ca. 11 wt%) was dispersed on a carbonaceous mesoporous support and modified with copper (ca. 5 wt%) photodeposited using either glycerol or methanol as the sacrificial agent ((Cu-TiO2/MCH_(Gly) and Cu-TiO2/MCH_(Met) ...