Jorda Moret, Jose Luis

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2006 - 200942010 - 2019232020 - 20242
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Autor: Rey Garcia, Fernando ×

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    Ultrafast Electron Diffraction Tomography for Structure Determination of the New Zeolite ITQ-58
    (American Chemical Society, 2016-08-17) Simancas-Coloma, Jorge; Simancas Coloma, Raquel; Bereciartua-Pérez, Pablo Javier; Jorda Moret, Jose Luis; Rey Garcia, Fernando; Corma Canós, Avelino; Nicolopoulos ., Stavros; Das, Partha Pratim; Gemmi, Mauro; Mugnaioli, Enrico; Instituto Universitario Mixto de Tecnología Química; European Research Council; Ministerio de Economía y Competitividad; Generalitat Valenciana
    [EN] In this work a new ultrafast data collection strategy for electron diffraction tomography is presented that allows reducing data acquisition tithe by one order of Magnitude.,,This Methodology minimizes the radiation damage of, beam-sensitive materials, such as microporous materials. This method, combined with the precession of the electron beam, provides high quality data enabling the determination of very complex structures. Most importantly,, the implementation of this new, electron diffraction methodology is, easily affordable in any modem electron Microscope. As a proof of concept, we have solved a new highly complex zeolitic structure named ITQ-58, with a very low symmetry (triclinic) and a large unit cell volume (1874.61(3)), containing 16 silicon and 32 oxygen atoms in its asymmetric unit, which would be very difficult to solve with the state of the art techniques.
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    ITQ-69: A Germanium-Containing Zeolite and its Synthesis, Structure Determination, and Adsorption Properties
    (John Wiley & Sons, 2021-05-17) Sala-Gascon, Andres; Pérez-Botella, Eduardo; Jorda Moret, Jose Luis; Cantin Sanz, Angel; Rey Garcia, Fernando; Valencia Valencia, Susana; Instituto Universitario Mixto de Tecnología Química; Ministerio de Educación, Cultura y Deporte; Ministerio de Ciencia, Innovación y Universidades; MINISTERIO DE ECONOMÍA, INDUSTRIA Y COMPETITIVIDAD
    [EN] In this work, a new zeolite named as ITQ-69, has been synthesized, characterized and its application as selective adsorbent for industrially relevant light olefins/paraffins separations has been assessed. This material has been obtained as pure germania as well as silica-germania zeolites with different Si/Ge ratios using a diquaternary ammonium cation as organic structure directing agent. Its structure was determined by single-crystal X-Ray diffraction showing a triclinic unit cell forming a tridirectional small pore channel system (8x8x8R). Also, it has been found that Si preferentially occupies some special T sites of the structure as deduced from Rietveld analysis of the powder X-ray diffraction patterns. In addition, the new zeolite ITQ-69 has been found to be stable upon calcination and thus, its adsorption properties were evaluated, showing a promising kinetic selectivity for light olefin separations in the C3 fraction.
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    Use of Alkylarsonium Directing Agents for the Synthesis and Study of Zeolites
    (John Wiley & Sons, 2019-12-18) Saez-Ferre, Sara; Lopes, Christian W.; Simancas-Coloma, Jorge; Vidal Moya, José Alejandro; Blasco Lanzuela, Teresa; Agostini, Giovanni; Mínguez Espallargas, Guillermo; Jorda Moret, Jose Luis; Rey Garcia, Fernando; Oña Burgos, Pascual; Instituto Universitario Mixto de Tecnología Química; Generalitat Valenciana; European Regional Development Fund; Ministerio de Educación y Ciencia; Ministerio de Economía y Competitividad; Ministerio de Ciencia, Innovación y Universidades; Coordenaçao de Aperfeiçoamento de Pessoal de Nível Superior, Brasil
    [EN] Expanding the previously known family of -onium (ammonium, phosphonium, and sulfonium) organic structure-directing agents (OSDAs) for the synthesis of zeolite MFI, a new member, the arsonium cation, is used for the first time. The new group of tetraalkylarsonium cations has allowed the synthesis of the zeolite ZSM-5 with several different chemical compositions, opening a route for the synthesis of zeolites with a new series of OSDA. Moreover, the use of As replacing N in the OSDA allows the introduction of probe atoms that facilitate the study of these molecules by powder X-ray diffraction (PXRD), solid-state nuclear magnetic resonance (MAS NMR), and X-ray absorption spectroscopy (XAS). Finally, the influence of trivalent elements such as B, Al, or Ga isomorphically replacing Si atoms in the framework structure and its interaction with the As species has been studied. The suitability of the tetraalkylarsonium cation for carrying out the crystallization of zeolites is demonstrated along with the benefit of the presence of As atoms in the occluded OSDA, which allows its advanced characterization as well as the study of its evolution during OSDA removal by thermal treatments.
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    Spectroscopic, calorimetric, and catalytic evidences of hydrophobicity on Ti-MCM-41 silylated materials for olefin epoxidations
    (Elsevier, 2015-10-25) Silvestre Albero, Joaquin; Domine, Marcelo Eduardo; Jorda Moret, Jose Luis; Navarro Villalba, Mª Teresa; Rey Garcia, Fernando; Rodriguez-Reinoso, Francisco; Corma Canós, Avelino; Instituto Universitario Mixto de Tecnología Química; Ministerio de Economía y Competitividad; Ministerio de Ciencia e Innovación; Generalitat Valenciana; Consejo Superior de Investigaciones Científicas
    tHydrophobic Ti-MCM-41 samples prepared by post-synthesis silylation treatment demonstrate to behighly active and selective catalysts in olefins epoxidation by using organic hydroperoxides as oxidizingagents in liquid phase reaction systems. Epoxide yields show important enhancements with increasedsilylation degrees of the Ti-mesoporous samples. Catalytic studies are combined and correlated withspectroscopic techniques (e.g. XRD, XANES, UV-Visible,29Si MAS-NMR) and calorimetric measurementsto better understand the changes in the surface chemistry of Ti-MCM-41 samples due to the post-synthesis silylation treatment and to ascertain the role of these trimethylsilyl groups incorporated inolefin epoxidation. In such manner, the effect of the organic moieties on solids, and both water and gly-col molecules contents on the catalytic activity and selectivity are analyzed in detail. Results show thatthe hydrophobicity level of the samples is responsible for the decrease in water adsorption and, conse-quently, the negligible formation of the non-desired glycol during the catalytic process. Thus, catalystdeactivation by glycol poisoning of Ti active sites is greatly diminished, this increasing catalyst stabilityand leading to practically quantitative production of the corresponding epoxide. The extended use ofthese hydrophobic Ti-MCM-41 catalysts together with organic hydroperoxides for the highly efficientand selective epoxidation of natural terpenes is also exemplified.
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    Synthesis and structure determination via ultra-fast electron diffraction of the new microporous zeolitic germanosilicate ITQ-62
    (The Royal Society of Chemistry, 2018) Bieseki, Lindiane; Simancas Coloma, Raquel; Jorda Moret, Jose Luis; Bereciartua-Pérez, Pablo Javier; Cantin Sanz, Angel; Simancas-Coloma, Jorge; Pergher, Sibele B.; Valencia Valencia, Susana; Rey Garcia, Fernando; Corma Canós, Avelino; Instituto Universitario Mixto de Tecnología Química; European Regional Development Fund; Ministerio de Economía y Competitividad
    [EN] Here, we present the synthesis and structure determination of the new zeolite ITQ-62. Its structure was determined via ultra-fast electron diffraction tomography and refined using powder XRD data of the calcined material. This new zeolite contains a tridirectional channel system of highly distorted 8-rings, as well as a monodirectional 12-ring channel system.
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    Gas confinement in compartmentalized coordination polymers for highly selective sorption
    (The Royal Society of Chemistry, 2017-04-01) Giménez-Marqués, Mónica; Calvo Galve, Néstor; Palomino Roca, Miguel; Valencia Valencia, Susana; Rey Garcia, Fernando; Sastre Navarro, German Ignacio; Vitorica-Yrezabal, Iñigo J.; Jiménez-Ruiz, Mónica; Rodríguez-Velamazán, J. Alberto; González, Miguel A.; Jorda Moret, Jose Luis; Coronado, Eugenio; Minguez Espallargas, Guillermo; Instituto Universitario Mixto de Tecnología Química; European Commission; Generalitat Valenciana; European Regional Development Fund; Ministerio de Economía y Competitividad
    [EN] Discrimination between different gases is an essential aspect for industrial and environmental applications involving sensing and separation. Several classes of porous materials have been used in this context, including zeolites and more recently MOFs. However, to reach high selectivities for the separation of gas mixtures is a challenging task that often requires the understanding of the specific interactions established between the porous framework and the gases. Here we propose an approach to obtain an enhanced selectivity based on the use of compartmentalized coordination polymers, named CCP-1 and CCP-2, which are crystalline materials comprising isolated discrete cavities. These compartmentalized materials are excellent candidates for the selective separation of CO2 from methane and nitrogen. A complete understanding of the sorption process is accomplished with the use of complementary experimental techniques including X-ray diffraction, adsorption studies, inelastic- and quasi-elastic neutron scattering, magnetic measurements and molecular dynamics calculations.
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    High-Performance of Gas Hydrates in Confined Nanospace for Reversible CH4/CO2 Storage
    (Wiley, 2016-07-11) 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; Instituto Universitario Mixto de Tecnología Química; Ministerio de Ciencia e Innovación; ALBA Synchrotron Light Source; Generalitat Valenciana; Ministerio de Economía y Competitividad
    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 carbon cavities and the exceptional physicochemical properties of the carbon structure allows us to accelerate the formation and decomposition process of the gas hydrates from the conventional timescale of hours/days in artificial bulk systems to minutes in confined nanospace. The CH4/CO2 exchange process is fully reversible with high efficiency at practical temperature and pressure conditions. Furthermore, these activated carbons can be envisaged as promising materials for long-distance natural gas and CO2 transportation because of the combination of a high storage capacity, a high reversibility, and most important, with extremely fast kinetics for gas hydrate formation and release.
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    Modular organic structure-directing agents for the synthesis of zeolites
    (American Association for the Advancement of Science (AAAS), 2010) 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; Instituto Universitario Mixto de Tecnología Química; Ministerio de Ciencia e Innovación; Ministerio de Economía y Competitividad; Generalitat Valenciana
    [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 has been successfully introduced for the synthesis of zeolites. This approach has made possible the synthesis of the elusive boggsite zeolite, which is formed by 10- and 12-ring intersecting channels. This topology and these pore dimensions present interesting opportunities for catalysis in reactions of industrial relevance.
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    Cobalt Metal Organic Framework Based on Two Dinuclear Secondary Building Units for Electrocatalytic Oxygen Evolution
    (American Chemical Society, 2019-12-18) Gutiérrez Tarriño, Silvia; Olloqui Sariego, José Luis; Calvente, Juan José; Palomino Roca, Miguel; Mínguez Espallargas, Guillermo; Jorda Moret, Jose Luis; Rey Garcia, Fernando; Oña Burgos, Pascual; Instituto Universitario Mixto de Tecnología Química; Departamento de Química; Escuela Técnica Superior de Ingeniería Industrial; Ministerio de Ciencia e Innovación; Universitat Politècnica de València; Ministerio de Economía y Competitividad
    [EN] The synthesis of a new microporous metal-organic framework (MOF) based on two secondary building units, with dinuclear cobalt centers, has been developed. The employment of a well-defined cobalt cluster results in an unusual topology of the Co-2-MOF, where one of the cobalt centers has three open coordination positions, which has no precedent in MOF materials based on cobalt. Adsorption isotherms have revealed that Co-2-MOF is in the range of best CO2 adsorbents among the carbon materials, with very high CO2/CH4 selectivity. On the other hand, dispersion of Co-2-MOF in an alcoholic solution of Nafion gives rise to a composite (Co-2-MOF@Nafion) with great resistance to hydrolysis in aqueous media and good adherence to graphite electrodes. In fact, it exhibits high electrocatalytic activity and robustness for the oxygen evolution reaction (OER), with a turnover frequency number value superior to those reported for similar electrocatalysts. Overall, this work has provided the basis for the rational design of new cobalt OER catalysts and related materials employing well-defined metal clusters as directing agents of the MOF structure.
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    Synthesis of a Novel Zeolite through a Pressure-Induced Reconstructive Phase Transition Process
    (Wiley-VCH Verlag, 2013-09) Jorda Moret, Jose Luis; Rey Garcia, Fernando; Sastre Navarro, German Ignacio; Valencia Valencia, Susana; Palomino Roca, Miguel; Corma Canós, Avelino; Segura Garcia del Rio, Alfredo; Errandonea, Daniel; Lacomba Perales, Raúl; Manjón Herrera, Francisco Javier; Gomis Hilario, Oscar; Kleppe, Annette K.; Jephcoat, Andrew P.; Amboage, Mónica; Rodríguez-Velamazán, J. Alberto; Departamento de Física Aplicada; Instituto Universitario Mixto de Tecnología Química; Escuela Técnica Superior de Ingeniería Aeroespacial y Diseño Industrial; Instituto de Diseño para la Fabricación y Producción Automatizada; Escuela Politécnica Superior de Alcoy; Centro de Tecnologías Físicas: Acústica, Materiales y Astrofísica; Ministerio de Ciencia e Innovación; Generalitat Valenciana; Universitat Politècnica de València; Ministerio de Economía y Competitividad
    The first pressure-induced solid-phase synthesis of a zeolite has been found through compression of a common zeolite, ITQ-29 (see scheme, Si yellow, O red). The new microporous structure, ITQ-50, has a unique structure and improved performance for propene/propane separation with respect the parent material ITQ-29.