- RIUMA Principal
- Investigación
- Química Inorgánica, Cristalografía y Mineralografía - (QICM)
- QICM - Artículos
- Listar QICM - Artículos por autor
Listar QICM - Artículos por autor "Moreno-Tost, Ramón"
Mostrando ítems 1-20 de 22
-
Application of zeolites for the production of biofuels and furans from hexose sugars in ethanol.
Torres-Olea, Benjamín; Pérez-Merchán, Antonio Manuel; Díaz-Maizkurrena, P.; Requies, Jesús M.; Moreno-Tost, Ramón; Cecilia-Buenestado, Juan Antonio; García-Sancho, Cristina; Maireles-Torres, Pedro Jesús[et al.] (Elsevier, 2023-10-24)The use of zeolites as catalysts in the transformation of glucose and 5-hydroxymethylfurfural (HMF) into 5-ethoxymethylfurfural (EMF) was evaluated. The behaviour of the catalysts could be explained by their morphology, ... -
Catalysts Based on Ni and Mg Oxides for the One-Pot Production of High Added-Value Products from Furfural.
Maderuelo-Solera, Rocío; Jiménez-Gómez, Carmen Pilar; Cecilia-Buenestado, Juan Antonio; García-Sancho, Cristina; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús[et al.] (Wiley, 2024-03-31)A family of NiO-MgO samples with Ni/Mg molar ratio between 0.10 and 0.30 are synthesized by co-precipitation and subsequent calcination. The characterization of the samples show the formation of a solid solution with a ... -
Catalytic transfer hydrogenation of furfural to furfuryl alcohol over calcined MgFe hydrotalcites
Maderuelo Solera, Rocío; López Asencio, Raquel; Cecilia-Buenestado, Juan Antonio; Jiménez-Gómez, Carmen Pilar; García-Sancho, Cristina; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús[et al.] (Elsevier B.V., 2019-11-07)Catalytic transfer hydrogenation is an alternative catalytic approach for the reduction of carbonyl groups, instead of the use of dihydrogen gas. In this sense, a series of catalysts has been prepared by thermal treatment ... -
Effect of the treatment with H3PO4 on the catalytic activity of Nb2O5 supported on Zr-doped mesoporous silica catalyst. Case study: glycerol dehydration.
García-Sancho, Cristina; Cecilia-Buenestado, Juan Antonio; Mérida-Robles, Josefa María; Santamaría-González, José; Moreno-Tost, Ramón; Infantes-Molina, Antonia; Maireles-Torres, Pedro Jesús[et al.] (Elsevier B.V., 2017-09-06)We have previously demonstrated the influence of the niobium species over the glycerol dehydration reaction and how the catalyst regeneration by thermal treatment modified the catalytic performance due to the transformation ... -
Evaluation of the ZrO2/Al2O3 system as catalysts in the catalytic transfer hydrogenation of furfural to obtain furfuryl alcohol
Jiménez-Gómez, C.P.; Viar-Antuñano, N.; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramón; Mérida-Robles, Josefa María; Requies, Jesús M.; Maireles-Torres, Pedro Jesús[et al.] (Elsevier, 2021)ZrO2, Al2O3 and ZrO2/Al2O3 with different Zr/Al molar ratio, have been synthesized by coprecipitation and subsequent calcination. The resulting catalysts were characterized by X-ray diffraction, transmission electron microscopy, ... -
Influence of Lewis and Brønsted acid catalysts in the transformation of hexoses into 5-ethoxymethylfurfural
Torres-Olea, Benjamín; Fúnez Núñez, Inmaculada; García-Sancho, Cristina; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús[et al.] (Elsevier, 2023)Several sulfonated polymers, which are typical Brønsted acid catalysts, have been employed in the production of two biofuels: 5-ethoxymethylfurfural (EMF) and ethyl levulinate (EL) as main byproduct, and the catalytic ... -
Influence of morphology of zirconium-doped mesoporous silicas on 5-hydroxymethylfurfural production from mono-, di- and polysaccharides
Mérida Morales, Sandra; García-Sancho, Cristina; Oregui-Bengoechea, Mikel; Ginés-Molina, María José; Cecilia-Buenestado, Juan Antonio; Arias, Pedro Luis; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús[et al.] (Elsevier B.V., 2020-02-21)Different zirconium-doped mesoporous silicas (Zr-KIT-6, Zr-SBA-15, Zr-MCM-41 and Zr-HMS) were synthesized and evaluated in the glucose dehydration to 5-hydroxymethylfurfural (HMF). A Si/Zr molar ratio of 5 was chosen for ... -
Influence of Structure-modifying Agents in the Synthesis of Zr-doped SBA-15 Silica and Their Use as Catalysts in the Furfural Hydrogenation to Obtain High Value-added Products through the Meerwein-Ponndorf-Verley Reduction
López-Asensio, Raquel; Jiménez-Gómez, Carmen Pilar; García-Sancho, Cristina; Moreno-Tost, Ramón; Cecilia-Buenestado, Juan Antonio; Maireles-Torres, Pedro Jesús[et al.] (MDPI, 2019-02-14)Zr-doped mesoporous silicas with different textural parameters have been synthesized in the presence of structure-modifying agents, and then characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), ... -
Mixed Oxides Derived from Hydrotalcites Mg/Al Active in the Catalytic Transfer Hydrogenation of Furfural to Furfuryl Alcohol
López-Asensio, Raquel; Cecilia-Buenestado, Juan Antonio; Herrera-Delgado, María Concepción; Larrubia-Vargas, María Ángeles; García-Sancho, Cristina; Maireles-Torres, Pedro Jesús; Moreno-Tost, Ramón[et al.] (IOAP-MDPI, 2022-12-26)Herein, a family of Mg/Al hydrotalcites was synthesized as catalytic precursors of MgAlOx mixed oxides. Both hydrotalcites and mixed oxides were characterized and the mixed oxides were tested in the reduction of furfural ... -
Oxidation of lignocellulosic platform molecules to value-added chemicals using heterogeneous catalytic technologies
Arias, Pedro Luis; Cecilia-Buenestado, Juan Antonio; Gandarias, Iñaki; Iglesias, José; López Granados, Manuel; Mariscal, Rafael; Morales, Gabriel; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús[et al.] (The Royal Society of Chemistry, 2020-04-10)Currently, much attention is being paid to the development of sustainable catalytic processes for the production of chemicals (biofuels, bioproducts, and so on) from lignocellulosic biomass. This minireview pursues to give ... -
Oxidative Condensation of Furfural with Ethanol Using Pd-Based Catalysts: Influence of the Support
Cecilia-Buenestado, Juan Antonio; Jiménez-Gómez, Carmen Pilar; Torres-Bujalance, Virginia; García-Sancho, Cristina; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús[et al.] (MDPI, 2020-11-12)PdO nanoparticles were deposited on several supports (β-zeolite, Al2O3, Fe2O3, MgO, and SiO2), which displayed different crystallinity, textural properties, and amount of acid and basic sites. These catalysts were characterized ... -
Porous SiO2 Nanospheres Modified with ZrO2 and Their Use in One- Pot Catalytic Processes to Obtain Value-Added Chemicals from Furfural
Maderuelo Solera, Rocío; Richter, Stefan; Jiménez-Gómez, Carmen Pilar; García-Sancho, Cristina; García-Mateos, Francisco José; Rosas-Martínez, Juana María; Moreno-Tost, Ramón; Cecilia-Buenestado, Juan Antonio; Maireles-Torres, Pedro Jesús[et al.] (American Chemical Society, 2021-11-26)Porous SiO2 nanospheres have been modified with different proportion of ZrO2 to obtain catalysts with Si/Zr molar ratio between 2.5 and 30. These materials were characterized by X-ray diffraction, transmission electron ... -
Production of Biofuels by 5-Hydroxymethylfurfural Etherification Using Ion-Exchange Resins as Solid Acid Catalysts
Torres-Olea, Benjamín; Fúnez Núñez, Inmaculada; García-Sancho, Cristina; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús[et al.] (mdpi, 2020-11-09)In this work, acidic ion-exchange resins with strong Brönsted sulphonic groups were assessed in the catalytic etherification of the platform molecule 5-(hydroxymethyl)furfural (HMF) to 5-(ethoxymethyl)furfural (EMF), a ... -
Recent Advances in Mechanochemical Pretreatment of Lignocellulosic Biomass
Pérez-Merchán, Antonio Manuel; Rodríguez Carballo, Gabriela; Torres-Olea, Benjamín; García-Sancho, Cristina; Maireles-Torres, Pedro Jesús; Mérida-Robles, Josefa María; Moreno-Tost, Ramón[et al.] (IOAP-MPDI, 2022-08-17)Biorefineries are industrial facilities where biomass is converted into chemicals, fuels and energy. The use of lignocellulose as raw material implies the development of pretreatments to reduce its recalcitrant character ... -
Recent Advances in Mesoporous Materials and Their Biomedical Applications
Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramón (IOAP-MDPI, 2022-12-09)Since the beginning of civilization, porous materials have been used for medical purposes. Some studies have reported that the first uses of applications of porous materials were carried out by the Ancient Egyptian or ... -
Recovery of pentoses-containing olive stones for their conversion into furfural in the presence of solid acid catalysts
Fúnez Núñez, Inmaculada; García-Sancho, Cristina; Cecilia-Buenestado, Juan Antonio; Moreno-Tost, Ramón; Serrano Cantador, Luis; Maireles-Torres, Pedro Jesús[et al.] (2020-06-24)Olive stones were employed as feedstock for furfural production in two stages: 1) autohydrolysis of hemicellulosic fraction to recover their pentoses, mainly xylose, and 2) subsequent dehydration of pentoses into furfural. ... -
Selective production of furan from gas-phase furfural decarbonylation on Ni-MgO catalysts.
Jiménez-Gómez, Carmen Pilar; Cecilia-Buenestado, Juan Antonio; García-Sancho, Cristina; Moreno-Tost, Ramón; Maireles-Torres, Pedro Jesús (American Chemical Society, 2019-03-13)A series of Ni-MgO catalysts (Ni/Mg molar ratio: 0.1-0.3), prepared by a coprecipitation-calcination-reduction methodology, was characterized and evaluated in the gas-phase hydrogenation of furfural. In all cases, after ... -
Synthesis of Porous Clay Heterostructures Modified with SiO2–ZrO2 Nanoparticles for the Valorization of Furfural in One-Pot Process
Essih, Salima; Cecilia-Buenestado, Juan Antonio; Jiménez-Gómez, Carmen Pilar; García-Sancho, Cristina; García-Mateos, Francisco José; Rosas-Martínez, Juana María; Moreno-Tost, Ramón; Franco-Duro, Francisco Ignacio; Maireles-Torres, Pedro Jesús[et al.] (Wiley-VCH GmbH, 2022)The layered structure of two smectites (montmorillonite and saponite) are modified by the insertion of SiO2–ZrO2 nanoparticles, with a Si/Zr molar ratio of 5, to form porous clay heterostructures (PCHs). These PCHs exhibit ... -
Tailoring basic and acidic properties of MgAl hydrotalcite by fluoride anions: Effect on glycerol oligomerisation
Maderuelo Solera, Rocío; Ledesma-Muñoz, A.L.; García-Sancho, Cristina; Cecilia-Buenestado, Juan Antonio; Infantes-Molina, Antonia; Mérida-Robles, Josefa María; Maireles-Torres, Pedro Jesús; Moreno-Tost, Ramón[et al.] (Elsevier, 2023)In this work, two families of catalysts based on mixed metal oxides derived from MgAl hydrotalcites were synthesized with a Mg/Al molar ratio of 3. On the one hand, in the first family, the fluoride anion was incorporated ... -
Tailoring the selectivity of Cu-based catalysts in the furfural hydrogenation reaction: Influence of the morphology of the silica support
Jiménez-Gómez, Carmen Pilar; Cecilia-Buenestado, Juan Antonio; Alba Rubio, Ana Carolina; Cassidy, Andrea; Moreno-Tost, Ramón; García-Sancho, Cristina; Maireles-Torres, Pedro Jesús[et al.] (Elsevier, 2022)Cu nanoparticles were incorporated on different porous silica supports (commercial silica, SBA-15 synthesized both at room temperature and under hydrothermal conditions, and mesocellular foam) by the strong electrostati ...