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Listar por autor "Rodriguez-Mirasol, Jose"
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Alcohol decomposition on basic/acid lignin-derived submicron diameter carbon fibers
García-Mateos, Francisco J.; Rosas, Juana María; Rodriguez-Mirasol, Jose; Cordero, Tomás (2018-07-12)The use of lignin, the second most abundant polymer in nature, along with a simple and versatile technique, electrospinning, represents an advantageous and promising approach for the preparation of carbon fibers. In ... -
Biomass derived activated carbon catalysts for the one-step dimethyl ether synthesis from syngas
Palomo, José; Rodríguez-Cano, Miguel A.; Rodriguez-Mirasol, Jose; Cordero, Tomás (2019-11-05)In this work we study the behaviour of a carbon-based catalyst for this one-step synthesis process. Two kinds of activated carbons, prepared by chemical (with H3PO4) and physical (by CO2 partial gasification) activation ... -
Carbon materials as template for the preparation of mixed oxides with controlled morphology
Cabrera-Molina, Antonio; Valero-Romero, María José; Guerrero-Pérez, María Olga; Rodriguez-Mirasol, Jose; Cordero, Tomás (2013-06-18)Bulk mixed oxide catalysts are widely used for many applications, such as catalysts for selective oxidation processes, electrocatalysts for fuel cells, gas sensors, and solid oxide electrolysers for the production of ... -
Catalizadores de base carbonosa para reacciones de oxidación y deshidratación de alcoholes
Valero-Romero, María José (Servicio de Publicaciones y Divulgación Científica, 2015)En las últimas décadas, el estudio y desarrollo de carbones activos como catalizadores o soportes catalíticos se ha incrementado enormemente debido a las ventajas derivadas de su elevada capacidad adsorbente, inercia y ... -
Conversión catalítica de metanol sobre catalizadores ácidos de carbono
Valero-Romero, María José; Calvo-Muñoz, Elisa Mª; Ruiz-Rosas, Ramiro; Bedia, Jorge; Rodriguez-Mirasol, Jose; [et al.] (2013-11-04)En las últimas décadas, el estudio y desarrollo de carbones activos como catalizadores o soportes catalíticos se ha incrementado enormemente debido a las ventajas derivadas de su elevada capacidad adsorbente, inercia y ... -
Deactivation of zirconium-phosphorus carbon catalyst on the dehydration of methanol todme reaction
Torres-Liñán, Javier; García-Rollán, Miguel; Palomo, José; Rosas, Juana María; Rodriguez-Mirasol, Jose; [et al.] (2018-07-12)Dimethylether (DME) can be used for energy purpose instead of GLP and diesel, or as a feedstock for fuel cells. Moreover, DME is a platform and is an attractive alternative as a clean propellant. At the moment, DME is ... -
Descomposición de metanol sobre carbones activos ácidos: papel del oxígeno y estudio cinético
Valero-Romero, María José; Calvo-Muñoz, Elisa Mª; Ruiz-Rosas, Ramiro; Rodriguez-Mirasol, Jose; Cordero, Tomás (2015-11-06)En trabajos anteriores se ha observado que la activación de residuos lignocelulósicos con ácido fosfórico permite obtener carbones activos con un contenido relativamente alto de fósforo sobre su superficie. Este fósforo ... -
Electrospinning of alcell lignin for the preparation of ORR electrocatalysts
Ruiz-Rosas, Ramiro; Cordero, Tomás; Rodriguez-Mirasol, Jose; Rosas, Juana María; García-Mateos, Francisco José (2019-10-28)Carbon fibers are one of the components of the electrode assemblies used in fuel cells. They are usually prepared from polyacrylonitrile, a non-renewable synthetic polymer. Lignin is a highly abundant biopolymer that is ... -
Flexible and low-cost binderless capacitors based on p- and n-containing fibrous activated carbons from denim cloth wastes
Rosas, Juana Maria; Cordero-Lanzac, Tomas; García-Mateos, Francisco José; Rodriguez-Mirasol, Jose; Cordero, Tomás (2018-07-12)Activated carbon cloths have been prepared from denim cloth wastes (DCWs) through chemical activation with H3PO4. The effect of the H3PO4/DCWs impregnation ratio and the carbonization temperature on the porous texture, ... -
Generación de grupos superficiales oxigenados en carbones activados con H3PO4
Valero-Romero, María José; Rodriguez-Mirasol, Jose; Cordero, Tomás (2013-11-05)Los carbones activados preparados mediante activación química de residuos lignocelulósicos con ácido fosfórico presentan, además de una elevada superficie específica, una química superficial muy particular debido a la ... -
High temperature treatments of porous activated carbon
García-Mateos, Francisco J.; Ruiz-Rosas, Ramiro; Rosas, Juana María; Rodriguez-Mirasol, Jose; Cordero, Tomás (2018-07-12)The use of biomass waste for the preparation of activated carbon is of great industrial interest for reducing costs and increasing the sustainability, especially in the field of energy storage. A high temperature treatment ... -
Highly conductive microporous carbon fibers by electrospinning of lignin/phosphoric acid/ethanol solutions
García-Mateos, Francisco J.; Rosas, Juana M.; Ruiz-Rosas, Ramiro; Rodriguez-Mirasol, Jose; Cordero, Tomás (2019-11-06)This contribution reports the preparation of electrospun lignin-based carbon fibers at different carbonization temperatures and the influence of heat treatments at temperatures ranging from 900 to 1600 ºC. The influence ... -
Kinetic study of methanol dehydration over Zro2 supported-activated carbons
Palomo, José; Rodríguez-Cano, Miguel Ángel; Rosas, Juana María; Rodriguez-Mirasol, Jose; Cordero, Tomás (2018-07-12)The growing concerns about climate change and energy consumption have been the driving force in seek of alternative fuels such as DME, mainly produced via methanol dehydration over a solid acid catalyst. The use of ... -
Kinetic study of methanol dehydration to DME on Zr-loaded P-containing mesoporous activated carbon catalyst
Palomo, José; Rodríguez-Cano, Miguel A; Rodriguez-Mirasol, Jose; Cordero Alcántara, Tomás (2019-06-28)The selective methanol dehydration to DME using a Zr-loaded P-containing activated carbon catalyst have been studied. The activated carbon was prepared by chemical activation of olive stones with phosphoric acid. Then, the ... -
Lignocellulosic derived activated carbon monoliths for emerging pollutants removal
Cordero, Tomás; García-Mateos, Francisco José; Ibeh, Paul O.; Martínez, Olaya; Rosas, Juana Mª; [et al.] (2019-10-31)Activated carbons are materials of great interest due to their versatility. Most of the activated carbons are prepared mainly in the form of powder, however, in certain processes, the powder-like morphology implies, high ... -
Modification of the morphology, porosity and surface chemistry of lignin-based electrospun carbon materials
Ruiz-Rosas, Ramiro; Rodriguez-Mirasol, Jose; Rosas Martínez, Juana María; García-Mateos, Francisco José; Cordero, Tomás (2019-06-27)Lignin is a biopolymer that can be found as the main component of plants. It is obtained as a coproduct in the papermaking and biofuel industries. Owing to its high carbon and aromatic content, high availability and reduced ... -
Needleless electrospun polyacrylonitrile nanofibers mats - Preparation, stabilization, carbonization and composite formation
Sabantina, Lilia (UMA Editorial, 2018-12-05)This dissertation deals with NEEDLELESS ELECTROSPUN POLYACRYLONITRILE NANOFIBER MATS - PREPARATION, STABILIZATION, CARBONIZATION AND COMPOSITE FORMATION and consists of a total of nine thematic chapters. At the beginning ... -
On the deactivation of Zr-loading P-containing mesoporous carbon catalyst during methanol dehydration
Torres-Liñán, Javier; García Rollán, Miguel; Rosas, Juana Mª; Rodriguez-Mirasol, Jose; Cordero, Tomás (2019-06-27)Dimethyl ether (DME) has received much attention in the last few years due to its potential use as a diesel substitute and it can be obtained from dehydration of biomass-based methanol. γ-Alumina, ZSM-5 and HPAs were tested ... -
Preparación de fibras submicrométricas de base carbonosa para aplicaciones energéticas y medioambientales
García Mateos, Francisco José (UMA Editorial, 2017-06-01)En esta Tesis Doctoral se estudia la valorización de la lignina como precursor de fibras de carbón. Para ello, las fibras se han preparado por electrospinning de disoluciones de lignina-etanol y lignina-etanol-H3PO4. Para ... -
Role of oxygen in the dehydration of methanol and ethanol on carbon-based acid catalysts
Valero-Romero, María José; Calvo-Muñoz, Elisa Mª; Rodrigues-Gómes, Marilucía; Serrano-Pérez de Gracia, Marta; Rodriguez-Mirasol, Jose; [et al.] (2014-07-28)Activated carbons are receiving great attention in the last decades as catalysts and catalyst supports due to some advantages, such as, their very high specific surface area, high thermal and chemical stability and the ...