Listar por autor "6beb38b3-7dc4-45e3-931b-7d878bf24d27"
Mostrando ítems 1-19 de 19
-
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 ... -
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 ... -
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 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, ... -
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 ... -
Current research on Green Ammonia (NH3) as a potential vector energy for power storage and engine fuels: a review
Estevez, Rafael; López Tenllado, Francisco Javier; 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 ... -
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 Javier; 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 ... -
Holistic view of biological nitrogen fixation and phosphorus mobilization in Azotobacter chroococcum NCIMB 8003
Biełło, Karolina A.; Lucena, Carlos; López Tenllado, Francisco Javier; Hidalgo-Carrillo, J.; Rodríguez Caballero, Gema; Cabello, Purificación; Sáez, Lara P.; Luque-Almagro, Víctor Manuel; Roldán, María Dolores; Moreno-Vivián, Conrado; Olaya-Abril, Alfonso (Frontiers, 2023)Nitrogen (N) and phosphorus (P) deficiencies are two of the most agronomic problems that cause significant decrease in crop yield and quality. N and P chemical fertilizers are widely used in current agriculture, causing ... -
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 ... -
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) ... -
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 ... -
Photocatalytic production of hydrogen from binary mixtures of C-3 alcohols on Pt/TiO2: Influence of alcohol structure
López Tenllado, Francisco Javier; Hidalgo-Carrillo, J.; Montes Jiménez, Vicente; Sánchez-López, F.J.; Urbano, Francisco José; Marinas, Alberto (Elsevier, 2019)The effect of alcohol structure on photocatalytic production of H2 from C-3 alcohols was studied on 0.5% Pt/TiO2. A C-2 alcohol (ethanol) was also included for comparative purposes. For individual reactions from 10% v/v ... -
Pt Preferential incorporation onto TiO2 IN TiO2-carbon composites for hydrogen production from glycerol photoreforming
Escamilla, Juan Carlos; Hidalgo-Carrillo, J.; Martín-Gómez, Juan; López Tenllado, Francisco Javier; Estévez, R.; Marinas, Alberto; Urbano, Francisco José (Elsevier, 2022)Platinum was incorporated onto titania-mesoporous carbon composite and tested for glycerol photoreforming. The relative high surface area of the mesoporous carbon favored the good dispersion of anatase titania during sol-gel ... -
Selective oxidation of methanol to green oxygenates on vanadium- aluminum phosphate based catalysts
Blanco-Bonilla, F.; Estevez, Rafael; López Tenllado, Francisco Javier; Luna, Diego; Bautista, Felipa M. (Elsevier, 2024)The methanol transformation reaction in the presence of oxygen was carried out in the temperature range of 210-310 ºC, over vanadium catalysts based on vanadium oxide (V2O5) and on vanadium-phosphorus oxide (VPO) calcined ... -
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 Javier; 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 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 ... -
Synthesis of Fe-TiO2 and Cu-TiO2 Based Materials by Olive Leaves Biotemplating—Application to Hydrogen Production from Glycerol Photoreforming
Martín-Gómez, Juan; Reca-Expósito, Susana; López Tenllado, Francisco Javier; Hidalgo-Carrillo, J.; Marinas, Alberto; Urbano, Francisco José (MDPI, 2023)Hydrogen production is mainly based on the use of fossil fuels, but currently, many alternative routes are being developed, among which the photo-reforming of oxygenated organic compounds stands out. Recently, several ...