Jorda Moret, Jose Luis
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- PublicaciónUltrafast 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.
- PublicaciónRational Design and HT Techniques Allow the Synthesis of New IWR Zeolite Polymorphs(American Chemical Society, 2006) Cantin Sanz, Angel; Corma Canós, Avelino; Díaz Cabañas, Mª José; Jorda Moret, Jose Luis; Moliner Marin, Manuel; Instituto Universitario Mixto de Tecnología Química; Ministerio de Ciencia y Tecnología
- PublicaciónITQ-54: a multi-dimensional extra-large pore zeolite with 20 × 14 × 12-ring channels(Royal Society of Chemistry: Chemical Science, 2015) Jiang, Jiuxing; Yun, Yifeng; Zou, Xiaodong; Jorda Moret, Jose Luis; Corma Canós, Avelino; Instituto Universitario Mixto de Tecnología Química; Knut and Alice Wallenberg Foundation; Ministerio de Economía y Competitividad; Ministerio de Ciencia e Innovación; Generalitat Valenciana; Swedish Research Council; Swedish Governmental Agency for Innovation SystemsA multi-dimensional extra-large pore silicogermanate zeolite, named ITQ-54, has been synthesised by in situ decomposition of the N,N-dicyclohexylisoindolinium cation into the N-cyclohexylisoindolinium cation. Its structure was solved by 3D rotation electron diffraction (RED) from crystals of ca. 1 μm in size. The structure of ITQ-54 contains straight intersecting 20 × 14 × 12-ring channels along the three crystallographic axes and it is one of the few zeolites with extra-large channels in more than one direction. ITQ-54 has a framework density of 11.1 T atoms per 1000 Å3, which is one of the lowest among the known zeolites. ITQ-54 was obtained together with GeO2 as an impurity. A heavy liquid separation method was developed and successfully applied to remove this impurity from the zeolite. ITQ-54 is stable up to 600 °C and exhibits permanent porosity. The structure was further refined using powder X-ray diffraction (PXRD) data for both as-made and calcined samples.
- PublicaciónSynthesis and Structure of a 22 x 12 x 12 Extra-Large Pore Zeolite ITQ-56 Determined by 3D Electron Diffraction(American Chemical Society, 2021-06-02) Kapaca, Elina; Jiang, Jiuxing; Cho, Jung; Jorda Moret, Jose Luis; Díaz Cabañas, Mª José; Zou, Xiaodong; Corma Canós, Avelino; Willhammar, Tom; Instituto Universitario Mixto de Tecnología Química; European Commission; Swedish Research Council; Knut and Alice Wallenberg Foundation; National Natural Science Foundation of China; MINISTERIO DE ECONOMÍA, INDUSTRIA Y COMPETITIVIDAD[EN] A multidimensional extra-large pore germanosilicate, denoted ITQ-56, has been synthesized by using modified memantine as an organic structure-directing agent. ITQ-56 crystallizes as plate-like nanocrystals. Its structure was determined by 3D electron diffraction/MicroED. The structure of ITQ-56 contains extra-large 22-ring channels intersecting with straight 12-ring channels. ITQ-56 is the first zeolite with 22-ring pores, which is a result of ordered vacancies of double 4-ring (d4r) units in a fully connected zeolite framework. The framework density is as low as 12.4 T atoms/1000 angstrom(3). The discovery of the ITQ-56 structure not only fills the missing member of extra-large pore zeolite with 22-ring channels but also creates a new approach of making extra-large pore zeolites by introducing ordered vacancies in zeolite frameworks.
- PublicaciónITQ-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.
- PublicaciónUse 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.
- PublicaciónSpectroscopic, 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 CientíficastHydrophobic 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.
- PublicaciónStudy on the Hydrogenation of Ethyl Stearate to the Fatty Alcohol 1-Octadecanol over Ru on Tungstated Zirconia(MDPI AG, 2023-10) Quintero-Ramos, Diego; Checa, Manuel; Jorda Moret, Jose Luis; Sabater Picot, Mª José; Instituto Universitario Mixto de Tecnología Química; Agencia Estatal de Investigación[EN] Fatty alcohols are important products in the chemical industry, given that they are frequently used in the formulation of surfactants and lubricants. In this context, this work describes a catalytic heterogeneous approach for the production of 1-octadecanol (C18OH) from ethyl stearate (ES) using nanosized Ru-supported on tungstated zirconia (W/Zr). The activity and selectivity of this series of catalysts have been studied during the hydrogenation of ES in a batch reactor at 175 degrees C and PH2 = 40 bar. The so-prepared catalysts were characterized by a sort of characterization techniques (i.e., X-ray diffraction, H2-TPR, etc.), confirming the high dispersion and higher reducibility of Ru nanoparticles on the W/Zr surface (primarily tetragonal zirconia) with respect to pure zirconia. Overall, the catalysts were significantly active. In addition, a strong synergistic effect was revealed between Ru and W species, according to catalytic data. Finally, the reaction sequence towards fatty alcohol has also been elucidated, pointing to the ester hydrogenolysis to the aldehyde and ulterior hydrogenation of the latter as the main route for fatty alcohol formation.
- PublicaciónInsights into the formation of metal carbon nanocomposites for energy storage using hybrid NiFe layered double hydroxides as precursors(The Royal Society of Chemistry, 2020-08-07) Romero, Jorge; Varela, Maria; Assebban, Mhamed; Oestreicher, Victor; Guedeja-Marron, Alejandra; Jorda Moret, Jose Luis; Abellán Sáez, Gonzalo; Coronado, Eugenio; Instituto Universitario Mixto de Tecnología Química; European Commission; Generalitat Valenciana; Deutsche Forschungsgemeinschaft; Agencia Estatal de Investigación; Ministerio de Economía y Competitividad; European Cooperation in Science and Technology[EN] NiFe-carbon magnetic nanocomposites prepared using hybrid sebacate intercalated layered double hydroxides (LDHs) as precursors are shown to be of interest as supercapacitors. Here, the low-temperature formation mechanism of these materials has been deciphered by means of a combined study using complementaryin situ(temperature-dependent) techniques. Specifically, studies involving X-ray powder diffraction, thermogravimetry coupled to mass spectrometry (TG-MS), statistical Raman spectroscopy (SRS), aberration-corrected scanning transmission electron microscopy (STEM) and electron energy-loss spectroscopy (EELS) have been carried out. The experimental results confirm the early formation of FeNi(3)nanoparticles atca.200-250 degrees C, preceding the concerted collapse of the starting NiFe-LDH laminar structure over just 50 degrees C (from 350 to 400 degrees C). At the same time, the catalytic interactions between the metallic atoms and the organic molecules permit the concomitant formation of a graphitic carbon matrix leading to the formation of the final FeNi3-carbon nanocomposite. Furthermore,in situtemperature-dependent experiments in the presence of the intrinsic magnetic field of the STEM-EELS allow observing the complete metal segregation of Ni and Fe even at 400 degrees C. These results provide fundamental insights into the catalytic formation of carbon-based nanocomposites using LDHs as precursors and pave the way for the fine-tuning of their properties, with special interest in the field of energy storage and conversion
- PublicaciónStimuli-responsive hybrid materials: breathing in magnetic layered double hydroxides induced by a thermoresponsive molecule(Royal Society of Chemistry, 2015) Abellán Sáez, Gonzalo; Jorda Moret, Jose Luis; Atienzar Corvillo, Pedro Enrique; Varela , Maria; Jaafar, Miriam; Gomez-Herrero, Julio; Zamora, Felix; Ribera, Antonio; García Gómez, Hermenegildo; Coronado, Eugenio; Instituto Universitario Mixto de Tecnología Química; Departamento de Química; Escuela Técnica Superior de Ingeniería Industrial; European Commission; Ministerio de Economía y Competitividad; Generalitat Valenciana; Ministerio de Ciencia e Innovación[EN] A hybrid magnetic multilayer material of micrometric size, with highly crystalline hexagonal crystals consisting of CoAl-LDH ferromagnetic layers intercalated with thermoresponsive 4-(4-anilinophenylazo)benzenesulfonate (AO5) molecules diluted (ratio 9 : 1) with a flexible sodium dodecylsulphate (SDS) surfactant has been obtained. The resulting material exhibits thermochromism attributable to the isomerization between the azo (prevalent at room temperature) and the hydrazone (favoured at higher temperatures) tautomers, leading to a thermomechanical response. In fact, these crystals exhibited thermally induced motion triggering remarkable changes in the crystal morphology and volume. In situ variable temperature XRD of these thin hybrids shows that the reversible change into the two tautomers is reflected in a shift of the position of the diffraction peaks at high temperatures towards lower interlayer spacing for the hydrazone form, as well as a broadening of the peaks reflecting lower crystallinity and ordering due to non-uniform spacing between the layers. These structural variations between room temperature (basal spacing (BS) = 25.91 angstrom) and 100 degrees C (BS = 25.05 angstrom) are also reflected in the magnetic properties of the layered double hydroxide (LDH) due to the variation of the magnetic coupling between the layers. Overall, our study constitutes one of the few examples showing fully reversible thermo-responsive breathing in a 2D hybrid material. In addition, the magnetic response of the hybrid can be modulated due to the thermotropism of the organic component that, by influencing the distance and in-plane correlation of the inorganic LDH, modulates the magnetism of the CoAl-LDH sheets in a certain range.