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Browsing by Author "Rey Garcia, Fernando"

Now showing items 1-20 of 63

A New Aluminosilicate Molecular Sieve with a System of Pores between Those of ZSM-5 and Beta Zeolite

Moliner Marin, Manuel; Gonzalez, Jorge; Portilla Ovejero, Mª Teresa; Willhammar, Tom; Rey Garcia, Fernando; Llopis Alonso, Francisco Javier; Zou, Xiaodong; Corma Canós, Avelino (American Chemical Society, 2011-06)

[EN] A new aluminosilicate zeolite (ITQ-39) has been synthesized. This is an extensively faulted structure with very small domains that makes the structure elucidation very difficult. However, a combination of adsorption ...
A new metal exchanged zeolite for a present environmental problem. An in-situ XAS study

Alonso Escobar, Cristina; Franch Martí, Cristina; Palomares Gimeno, Antonio Eduardo; Rey Garcia, Fernando; Guilera, Gemma (IOP Publishing, 2013)

The medium pore zeolite, TNU-9, is prepared and studied for the selective catalytic reduction (SCR) of NO using C3H8 as the reducing agent. The catalytic activity of TNU-9 zeolites for the SCR is comparable to other known ...
A new microporous zeolitic silicoborate (ITQ-52) with interconnected small and medium pores

Simancas Coloma, Raquel; Jorda Moret, Jose Luis; Rey Garcia, Fernando; Corma Canós, Avelino; Cantin Sanz, Angel; Peral, Inmaculada; Popescu, Catalin (American Chemical Society, 2014-03-05)

A new zeolite (named as ITQ-52) having large cavities and small and medium channels has been synthesized. This was achieved by using a new family of amino-phosphonium cations as organic structure directing agents (OSDA). ...
A new photochemical based route for the preparation of organic structure directing agents useful for zeolite synthesis

Cantin Sanz, Angel; Leiva Herrero, Sandra; Jorda Moret, Jose Luis; Valencia Valencia, Susana; Rey Garcia, Fernando; Corma Canós, Avelino (Elsevier, 2007)

[EN] A new photochemically induced [2+2] cycloaddition route for the synthesis of amines has been successfully applied for the preparation of a series of organic structure directing agents (OSDA's) that has been found to ...
A New Synthesis Route of the Tridirectional 12 Ring Channel Zeolite ITQ-7

Cantin Sanz, Angel; Corma Canós, Avelino; Díaz Cabañas, Mª José; Rey Garcia, Fernando; Sastre Navarro, German Ignacio (Elsevier, 2004)

[EN] A new synthesis procedure for the synthesis of ITQ-7 zeolites is reported that has been afforded by combining theoretical and experimental approaches. This new synthesis method is specially relevant since the earlier ...
An INS study of entrapped organic cations within the micropores of zeolite RTH

Lemishko, Tetiana; Simancas-Coloma, Jorge; Hernández Rodríguez, Manuel; Jiménez-Ruiz, Mónica; Sastre Navarro, German Ignacio; Rey Garcia, Fernando (Royal Society of Chemistry, 2016-06-14)

[EN] Two different organic cations (structure directing agents, SDAs) have been selected because of their ability to drive the synthesis of zeolites towards the same microporous material, RUB-13 (RTH), both being ...
Arsenolite: a quasi-hydrostatic solid pressure transmitting medium

Sans-Tresserras, Juan Ángel; Manjón, F. J.; Popescu, C.; Muñoz, A.; Rodríguez-Hernández, P.; Jordá, J. L.; Rey Garcia, Fernando (IOP Publishing, 2016-11-30)

This study reports the experimental characterization of the hydrostatic properties of arsenolite (As4O6), a molecular solid which is one of the softest minerals in the absence of hydrogen bonding. The high compressibility ...
Bioethanol steam reforming on Ni-based modified mordenite. Effect of mesoporosity, acid sites and alkaline metals

Da Costa Serra, Javier Francisco; Navarro Ruiz, María Teresa; Rey Garcia, Fernando; Chica, Antonio (Elsevier, 2012-04)

Support plays an important role in the preparation of highly active and selective bioethanol steam reforming catalysts since it helps in the dispersion of metal particles and enhances its activity via metal-support ...
Caracterización mediante técnicas espectroscópicas in situ de catalizadores de Cu y Co sobre zeolitas utilizados en la eliminación de NOx por reducción catalítica selectiva (SCR)

Alonso Escobar, Cristina (2012-05-15)

La reducción de óxidos de nitrógeno sobre materiales zeolíticos intercambiados con metales de transición es una de las rutas más prometedoras para la disminución de estos contaminantes en emisores móviles. Sin embargo, existe ...
Catalytic cracking performance of alkaline-treated zeolite Beta in the terms of acid sites properties and their accessibility

Tarach, K.; Gora-Marek, K.; Tekla, J.; Brylewska, K.; Datka, J.; Mlekodaj, K.; Makowski, W.; Igualada López, María Cristina; Martínez-Triguero, Joaquín; Rey Garcia, Fernando (Elsevier, 2014-04)

The zeolite Beta is considered as a promising additive for FCC catalyst in diesel oil production. In this article, it is shown that hierarchical zeolite Beta obtained by an optimized desilication procedure increases diesel ...
Cation Gating and Relocation during the Highly Selective Trapdoor Adsorption of CO2 on Univalent Cation Forms of Zeolite Rho

Lozinska, Magdalena M.; Mowat, John P. S.; Wright, Paul A.; Thompson, Stephen P.; Jorda Moret, Jose Luis; Palomino Roca, Miguel; Valencia Valencia, Susana; Rey Garcia, Fernando (American Chemical Society, 2014-03-25)

Adsorption of CO2 and CH4 has been measured on the Na-, K-, and Cs-forms of zeolite Rho (0 9 bar; 283 333 K). Although CH4 is excluded, CO2 is readily taken up, although the uptake at low pressures decreases strongly, in ...
Characterization of metallic species on porous materials by in situ XAS

Wittee Lopes, Christian (2018-09-10)

El objetivo de esta tesis es estudiar la agrupación y el crecimiento de especies metálicas confinadas o soportadas en materiales porosos mediante espectroscopia de absorción de rayos X in situ. Para lograrlo, las especies ...
Charge matching between the occluded organic cations and zeolite framework as structure directing effect in zeolite synthesis

Marqués, Blanca; Leiva Herrero, Sandra; Cantin Sanz, Angel; Jorda Moret, Jose Luis; Sabater Picot, Mª José; Corma Canós, Avelino; Valencia Valencia, Susana; Rey Garcia, Fernando (Elsevier, 2008)

[EN] The charge matching effect has been found to be an important parameter driving the synthesis towards particular zeolite frameworks. This has been evidenced by isomorphous incorporation of Aluminium into the zeolite ...
Correspondence: Strongly-driven Re + CO2 redox reaction at high-pressure and high-temperature

Santamaría-Perez, David; McGuire, C.; Makhluf, A.; Kavner, A.; Chulia-Jordan, R.; Jorda Moret, Jose Luis; Rey Garcia, Fernando; Pellicer Porres, Julio; Martínez García, D.; Rodríguez Hernández, Placida; Munoz, Alfonso (Nature Publishing Group, 2016-11-29)
Critical Role of Dynamic Flexibility in Ge-Containing Zeolites: Impact on Diffusion

Gutierrez-Sevillano, Juan José; Calero, Sofia; Hamad, Said; Grau-Crespo, Ricardo; Rey Garcia, Fernando; Valencia Valencia, Susana; Palomino Roca, Miguel; Balestra, Salvador R. G.; Ruiz-Salvador, A. Rabdel (Wiley, 2016-06-11)

Incorporation of germanium in zeolites is well known to confer static flexibility to their framework, by stabilizing the formation of small rings. In this work, we show that the flexibility associated to Ge atoms in zeolites ...
DESARROLLO DE NUEVOS MATERIALES BASADOS EN METALES NOBLES Y SEMINOBLES PARA CATALISIS MEDIOAMBIENTAL Y APLICACIONES BIOCIDAS

Cerrillo Olmo, José Luis (2019-07-22)

[ES] En esta Tesis Doctoral se ha estudiado el desarrollo de nuevos materiales basados en metales nobles y seminobles para su aplicación como catalizadores para su uso en tratamiento de aguas contaminadas y como aditivos ...
Desilication of highly siliceous zeolite ZSM-5 with NaOH and NaOH/tetrabutylamine hydroxide

Sadowska, K; Góra-Marek, Kinga; Drozdek, Marek; Kustrowski, Piotr; Datka, J; Martínez-Triguero, Joaquín; Rey Garcia, Fernando (Elsevier, 2013-03-01)

The results of both chemical and XPS analysis pointed out that desilication of highly siliceous ZSM-5 of Si/Al = 164 was more effective in the surface zone than in the bulk, contrary to zeolite ZSM-5 of Si/Al = 31.6. ...
EMPLEO DE CATIONES FOSFONIO COMO AGENTES DIRECTORES DE ESTRUCTURA (ADEs) EN LA SÍNTESIS DE ZEOLITAS.

Hernández Rodríguez, Manuel (2014-02-13)

DESARROLLO DE NUEVOS MATERIALES MICROPOROSOS QUE PUEDEN SER DE INTERÉS EN PROCESOS DE PETROLEOQUÍMICA Y QUÍMICA FINA, ASÍ COMO EN PROCESOS DE ADSORCIÓN Y SEPARACIÓN DE HIDROCARBUROS LIGEROS, TALES COMO HIDROCARBUROS LINEALES ...
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.