A5016212070- Zeolite Catalysis and Synthesis
- Mesoporous Materials and Catalysis
- Chemical Synthesis and Characterization
- X-ray Diffraction in Crystallography
- Metal-Organic Frameworks: Synthesis and Applications
- Crystallization and Solubility Studies
- Catalytic Processes in Materials Science
- Polyoxometalates: Synthesis and Applications
- Catalysis and Oxidation Reactions
- Layered Double Hydroxides Synthesis and Applications
- Advanced NMR Techniques and Applications
- Catalysis and Hydrodesulfurization Studies
- Catalysis for Biomass Conversion
- Carbon Dioxide Capture Technologies
- Nanomaterials for catalytic reactions
- Electrocatalysts for Energy Conversion
- Chemical Synthesis and Reactions
- Crystal Structures and Properties
- Covalent Organic Framework Applications
- Membrane Separation and Gas Transport
- Inorganic Fluorides and Related Compounds
- Crystallography and molecular interactions
- Inorganic Chemistry and Materials
- Ammonia Synthesis and Nitrogen Reduction
- Magnesium Oxide Properties and Applications
Consejo Superior de Investigaciones Científicas
2016-2025
Universitat Politècnica de València
2016-2025
Instituto de Tecnología Química
2016-2025
The University of Texas at Austin
2024
Fundación para la Educación y el Desarrollo Social
2021
Ação Educativa
2021
Universidad Santiago de Cali
2021
Instituto Valenciano de la Edificación
2016-2019
Tribunal Constitucional
2018
Centro Médico Sanitas Valencia
2018
Shining bright: Porous metal–organic framework materials are important owing to their potential applications as sensors. A new family of nanoporous, multifunctional rare-earth displays emission quantum yields and efficiencies that the highest reported for solid-state Eu3+ compounds with organic ligands magnetic properties. The picture shows [Gd,Eu]- [Tb]-containing under UV light interacting a magnet.
The discovery of new materials for separating ethylene from ethane by adsorption, instead using cryogenic distillation, is a key milestone molecular separations because the multiple and widely extended uses these molecules in industry. This technique has potential to provide tremendous energy savings when compared with currently used distillation process produced through steam cracking. Here we describe synthesis structural determination flexible pure silica zeolite (ITQ-55). material can...
Abstract Zeolites are crystalline microporous materials with application in diverse fields, especially catalysis. The ability to prepare zeolites targeted physicochemical properties for a specific catalytic is matter of great interest, because it allows the efficiency entire chemical process be increased (higher product yields, lower undesired by‐products, less energy consumption, and cost savings, etc). Nevertheless, directing zeolite crystallization towards material desired framework...
Small but important: A miniaturized prototype for pH sensing in the range 5–7.5 has been constructed from a photoluminescent Eu3+ metal–organic framework that contains two different sites (Eu1 and Eu2; see picture) self-assembles through hydrogen bonding π–π interactions. This material very high quantum yield an excellent balance between absorption, energy transfer, emission rate.
Natural methane hydrates are believed to be the largest source of hydrocarbons on Earth. These structures formed in specific locations such as deep-sea sediments and permafrost based demanding conditions high pressure low temperature. Here we report that, by taking advantage confinement effects nanopore space, synthetic grow under mild (3.5 MPa 2 °C), with faster kinetics (within minutes) than nature, fully reversibly a nominal stoichiometry that mimics nature. The formation hydrate...
Calcined hydrotalcites have been used extensively as catalysts for base-catalysed reactions. The calcination procedure in critical determining the behaviour of final material. characteristics hydrotalcite, following different stages calcination, studied by means thermogravimetric (TG), X-ray diffraction (XRD), IR, 1H and 27Al NMR techniques. We shown that dehydroxylation begins within layers then a second stage occurs between adjacent layers, causing collapse structure. This process is...
Subsitution of germanium for silicon in the preparation zeolite Beta allows synthesis and characterization a third, heretofore predicted, polymorph "C"; [001] view is shown picture. Germanium preferentially occupies positions double four-membered ring cages, secondary building units C, favors formation C regardless which eight organic structure-directing agents were used. Supporting information this article available on WWW under http://www.angewandte.com or from author. Please note: The...
LTA zeolites can be synthesized with tailored adsorption properties by controlling the Al content in framework. In this work, we have demonstrated that it is possible to adjust polarity of zeolitic adsorbent optimize its thermodynamic for energetically relevant CO2/CH4 separation process. The study has been made from corresponding isotherms pure gases carried out at different pressures and temperatures, as well breakthrough experiments mixtures results were compared those reported on MOFs....
ITQ-7 is a tri-dimensional twelve-membered ring zeolite which presents double four-membered units (D4MR) in its structure. On the basis of theoretical ab initio calculations, indicate that isomorphic substitution Ge for Si atoms stabilizes such small cages, we have carried out synthesis presence Ge. It found incorporation reduces crystallization time from 7 days to less than 12 h, while detailed analysis 19F and 29Si MAS NMR leads conclusion selectively occupies positions at D4MR. An...
The pore topology of ITQ-15 zeolite consists an ultra-large 14-ring channel that is intersected perpendicularly by a 12-ring pore; acid sites have been introduced in its framework and this unique structure shows advantages over unidirectional ultralarge zeolites for diffusing reacting large molecules.
Two strategies to improve the catalytic activity of Ti-MCM-41 materials in epoxidation olefins are described; first approach involves silylation surface which produces a very hydrophobic catalyst whereas second is based on removal water from reaction media; increase not due change intrinsic Ti sites, but rather decrease deactivation by reducing formation diols produced ring opening epoxide.
Swollen and highly ordered MCM-41 type materials with varied pores sizes, but similar wall thicknesses, have been directly synthesized in the absence of auxilliary organics by controlling preparation conditions. The most important parameter synthesis order to control pore opening is cetyltrimethylammonium (CTMA+) concentration gel. Our results suggest that mechanism swelling related replacement some CTMA+ species others cations interface formed between liquid crystal silica surfaces. This...
A new 10- and 12-membered ring zeolite, named ITQ-24, has been synthesized, its structure solved. It found that this zeolite is topologically identical to proposed for the hypothetical polymorph C of SSZ-33/SSZ-26/CIT-1 family. This achieved by using a rational approach introducing Ge in framework directing effect toward structures with double-four-membered rings as secondary building units. Notoriously, active catalytic centers, such Ti Al, have incorporated into demonstrating it...
The chemistry of metal phosphonates has been progressing fast with the addition new materials that possess novel structural features and properties, occasionally in a cooperative manner. In this paper, we report family functional lanthanide-carboxyphosphonate materials. Specifically, lanthanide is La, Ce, Pr, Sm, Eu, Gd, Tb, or Dy carboxyphosphonate ligand 2-hydroxyphosphonoacetic acid (H3HPA). All reported LnHPA compounds, Ln3(H0.75O3PCHOHCOO)4·xH2O (x = 15–16), crystallize orthorhombic...
Organic structure-directing agents (OSDAs) are used to guide the formation of particular types pores and channels during synthesis zeolites. We report that use highly versatile OSDAs based on phosphazenes has been successfully introduced for This approach made possible elusive boggsite zeolite, which is formed by 10- 12-ring intersecting channels. topology these pore dimensions present interesting opportunities catalysis in reactions industrial relevance.
Zeolite Rho is able to successfully separate CO(2) from CH(4) with the highest selectivity ever observed on basis of pore diameter and surface polarity. The adsorption provokes structural changes in zeolite Rho.