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Browsing by Author "Rey Garcia, Fernando"

Now showing items 21-40 of 67

Empleo de zeolitas en procesos de adsorción y separación de hidrocarburos de cadena corta

Sánchez, Ledys Yelitza (2018-09-10)

Los procesos de separación de mezclas de hidrocarburos y gases ligeros mediante adsorción selectiva empleando sólidos microporosos son de interés en numerosas aplicaciones industriales. El objetivo de este trabajo se centra ...
Estudio de la estabilidad de distintos tipos de agentes directores de estructura orgánicos en la síntesis de zeolitas

Simancas Coloma, Jorge (2013-06-17)

[ES] Estudio de la estabilidad de agentes directores de estructura (ADE) en síntesis de Zeolitas usando ADE tipo Tetraalquilamonio, Tetraalquilfosfonio y bases de Fosfaceno.
Estudio de materiales zeolíticos como estructuras anfitrionas de nanopartículas. Aplicaciones nanotecnológicas, catalíticas y medioambientales

Alonso Escobar, Cristina (2017-11-03)

In this thesis, a series of different metal-zeolite catalysts has been studied using X-ray absorption spectroscopy (XAS). The studies have focused on the in situ activation processes of the materials, complemented with ...
Estudio de procesos de separación de CO2 y CH4 mediante el empleo de zeolitas

Sánchez, Ledys Yelitza (2015-10-19)

[EN] The combining gravimetric and volumetric isotherms from mixtures of CO2/CH4, which allows the characterization of the thermodynamics for each separate adsorbate. The (IAST) calculation method was applied which permits ...
Estudio de procesos de separación de hidrocarburos ligeros mediante el empleo de tamices moleculares

Palomino Roca, Miguel (2016-05-02)

[EN] The aim of this thesis is to study the use of zeolites for the separation of light hydrocarbons. In order to do so, different zeolites were synthesized and characterized by different techniques to determine their ...
Estudios de difusión de mezclas de propano y propeno en zeolita Si-LTA (ITQ-29) empleando scattering cuasielástico de neutrones (QENS)

Pérez Botella, Eduardo (2017-01-16)

[EN] The separation process of propane-propene mixtures is very important in the petrochemical industry and the development of a non-cryogenic alternative method still remains a challenge. Such alternative process would ...
Fifth International FEZA Conference

Rey Garcia, Fernando; Corma Canós, Avelino; Bellussi, Giuseppe; Kaucic, Venceslav (Elsevier, 2013)
High Proton Conductivity in a Flexible, Cross-Linked, Ultramicroporous Magnesium Tetraphosphonate Hybrid Framework

Colodrero, Rosario M. P.; Olivera-Pastor, Pascual; Losilla, Enrique R.; Hernández-Alonso, Daniel; Aranda, Miguel A. G.; León-Reina, Laura; Rius, Jordi; Demadis, Konstantinos D.; Moreau, Bernard; Villemin, Didier; Palomino Roca, Miguel; Rey Garcia, Fernando; Cabeza, Aurelio (American Chemical Society, 2012)

Multifunctional materials, especially those combining two or more properties of interest, are attracting immense attention due to their potential applications. MOFs, metal organic frameworks, can be regarded as multifunctional ...
High-Performance of Gas Hydrates in Confined Nanospace for Reversible CH4/CO2 Storage

Casco, Mirian E.; Jorda Moret, Jose Luis; Rey Garcia, Fernando; Fauth, Francois; Martinez-Escandell, Manuel; Rodríguez-Reinoso, Francisco; Ramos-Fernandez, Enrique V.; Silvestre Albero, Joaquin (Wiley, 2016-07-11)

The molecular exchange of CH4 for CO2 in gas hydrates grown in confined nanospace has been evaluated for the first time using activated carbons as a host structure. The nano-confinement effects taking place inside the ...
Hydrothermal stability and catalytic performance of desilicated highly siliceous zeolites ZSM-5

Tarach, Karolina A.; Martínez-Triguero, Joaquín; Rey Garcia, Fernando; Góra-Marek, Kinga (Elsevier, 2016-07)

Highly siliceous zeolites, namely MFI type have attracted the great attention due to their higher hydrothermal stability, higher selectivity to organic compounds, and often better catalytic properties in comparison with ...
Inelastic Neutron Scattering Study on the Location of Bronsted Acid Sites in High Silica LTA Zeolite

Lemishko, Tetiana; Valencia Valencia, Susana; Rey Garcia, Fernando; Jiménez-Ruiz, Mónica; Sastre Navarro, German Ignacio (American Chemical Society, 2016-11-03)

The presence of Bronsted acid sites (SiOHAl) is crucial in many of the applications of zeolites in petroleum refining and related industries. This acidity relies on the number and location of acid sites, but the latter is ...
Influence of post-synthetic modifications on the composition, acidity and textural properties of ZSM-22 zeolite

Del Campo Huertas, Pablo; Beato, P.; Rey Garcia, Fernando; Navarro, María Teresa; Olsbye, Unni; Lillerud, K.P.; Svelle, S. (Elsevier, 01-2018)

[Otros] In this work, an extensive investigation of the preparation of a large body of desilicated ZSM-22 zeolites and their basic characterization is presented. We investigate the effects of the properties of the starting ...
Intensified biobutanol recovery using zeolites with complementary selectivity

Van der Perre, Stijn; Gelin, Pierre; Claessens, Benjamin; Martin-Calvo, Ana; Saint Remi, Julien Cousin; Duerinck, Tim; Baron, Gino V.; Palomino Roca, Miguel; Sánchez, Ledys Yelitza; Valencia Valencia, Susana; Shang, Jin; Singh, Ranjeet; Webley, Paul A.; Rey Garcia, Fernando; Denayer, Joeri F. M. (John Wiley & Sons, 2017)

[EN] A vapor phase adsorptive recovery process is proposed as an alternative way to isolate biobutanol from acetone-butanolethanol (ABE) fermentation media, offering several advantages compared to liquid phase separation. ...
ITQ-39 zeolite, an efficient catalyst for the conversion of low value naphtha fractions into diesel fuel: The role of pore size on molecular diffusion and reactivity

Martínez Armero, Marta Evelia; Moliner Marin, Manuel; Sastre Navarro, German Ignacio; Rey Garcia, Fernando; Martínez, Cristina; Corma Canós, Avelino (Elsevier, 2016-01)

[EN] ITQ-39, a multipore zeolite with interconnected 12- and 10-ring channel systems, effectively catalyzes the alkylation of two low value naphtha fractions for the production of diesel range alkylaromatics. A catalytic ...
Mesopore-modified mordenites as catalysts for catalytic pyrolysis of biomass and cracking of vacuum gasoil processes

Stefanidis, S.; Kalogiannis, K.; Iliopoulou, E. F.; Lappas, A. A.; Martínez Triguero, Luis Joaquín; Navarro Ruiz, María Teresa; Chica, Antonio; Rey Garcia, Fernando (Royal Society of Chemistry, 2013)

[EN] Mesopore-modified mordenite zeolitic materials with different Si/Al ratios have been repared and tested in the biomass pyrolysis and catalytic cracking of vacuum gasoil. Alkaline treatment was carried out to generate ...
Methane hydrate formation in confined nanospace can surpass nature

Casco, M.E.; Silvestre Albero, Joaquin; Ramirez-Cuesta, A.J.; Rey Garcia, Fernando; Jorda Moret, Jose Luis; Bansode, A.; Urakawa, A.; Peral, I.; Martinez-Escandell, M.; Kaneko, K.; Rodríguez Reinoso, Francisco (Nature Publishing Group: Nature Communications, 2015-03)

Natural methane hydrates are believed to be the largest source of hydrocarbons on Earth. These structures are formed in specific locations such as deep-sea sediments and the permafrost based on demanding conditions of high ...
Modular organic structure-directing agents for the synthesis of zeolites

Simancas Coloma, Raquel; Dari, Djamal; Velamazan, Noemi; Navarro Villalba, Mª Teresa; Cantin Sanz, Angel; Jorda Moret, Jose Luis; Sastre Navarro, German Ignacio; Corma Canós, Avelino; Rey Garcia, Fernando (American Association for the Advancement of Science (AAAS), 2010)

[EN] Organic structure-directing agents (OSDAs) are used to guide the formation of particular types of pores and channels during the synthesis of zeolites. We report that the use of highly versatile OSDAs based on phosphazenes ...
Multifunctional luminescent and proton-conducting lanthanide carboxyphosphonate open-framework hybrids exhibiting crystalline-to-amorphous- to-crystalline transformations

Colodrero, Rosario M. P.; Papathanasiou, Konstantinos E.; Stavgianoudaki, Nikoleta; Olivera-Pastor, Pascual; Losilla, Enrique R.; Aranda, Miguel A. G.; Leon-Reina, Laura; Sanz, Jesús; Sobrados, Isabel; Choquesillo-Lazarte, Duane; García-Ruiz, Juan M.; Atienzar Corvillo, Pedro Enrique; Rey Garcia, Fernando; Demadis, Konstantinos D.; Cabeza, Aurelio (American Chemical Society, 2012-09-15)

[EN] The chemistry of metal phosphonates has been progressing fast with the addition of new materials that possess novel structural features and new properties, occasionally in a cooperative manner. In this paper, we report ...
Nuevas rutas de síntesis de materiales porosos y su aplicación en procesos de separación.

Saez Ferre, Sara (2019-04-15)

[ES] La presente tesis doctoral se centra en estudiar nuevas rutas de síntesis para la síntesis de materiales porosos tanto inorgánicos como orgánicos. En concreto está tesis está dividida en dos grandes capítulos. El ...
One body, many heads; the Cerberus of catalysis. A new multipurpose in-situ cell for XAS at ALBA

Guilera, Gemma; Rey Garcia, Fernando; Hernandez Fenollosa, Juan; Cortés Vergaz, Juan José (IOP Publishing, 2013)

A new multi-purpose in-situ cell and its control system have been developed for synchrotron-based techniques as are X-Ray Absorption spectroscopy (XAS) and X-Ray Diffraction (XRD). The cell is made of a stainless steel ...