A5103186193- Zeolite Catalysis and Synthesis
- X-ray Diffraction in Crystallography
- Metal-Organic Frameworks: Synthesis and Applications
- Crystallization and Solubility Studies
- Mesoporous Materials and Catalysis
- Membrane Separation and Gas Transport
- Carbon Dioxide Capture Technologies
- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Crystallography and molecular interactions
- Covalent Organic Framework Applications
- Chemical Synthesis and Characterization
- Electrocatalysts for Energy Conversion
- Multicomponent Synthesis of Heterocycles
- Magnetism in coordination complexes
- Synthesis and Biological Evaluation
- Inorganic Chemistry and Materials
- Muon and positron interactions and applications
- Advanced Physical and Chemical Molecular Interactions
- Catalysis for Biomass Conversion
- Synthesis and biological activity
- Organic and Molecular Conductors Research
- NMR spectroscopy and applications
- Catalysis and Hydrodesulfurization Studies
- Synthesis and Reactivity of Heterocycles
Consejo Superior de Investigaciones Científicas
2014-2024
Instituto de Tecnología Química
2014-2024
Universitat Politècnica de València
2014-2024
Centro Médico Sanitas Valencia
2018
University of Puerto Rico at Carolina
2016
Universidad Complutense de Madrid
2014
Luleå University of Technology
2010
University of Amsterdam
2010
Peoples' Friendship University of Russia
1991-2003
Southern Federal University
1993
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...
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....
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.
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 materials if they show another useful property in addition the adsorption behavior. Here, we report a new light hybrid, MgH6ODTMP·2H2O(DMF)0.5 (1), which has been synthesized using tetraphosphonic acid H8ODTMP,...
Adsorption of CO2 and CH4 has been measured on the Na-, K-, Cs-forms zeolite Rho (0–9 bar; 283–333 K). Although is excluded, readily taken up, although uptake at low pressures decreases strongly, in order Na+ > K+ Cs+. Structural studies by powder X-ray diffraction (PXRD) suggest that cations intercage window sites block adsorption; however, presence CO2, can move enough to permit adsorption (several angstroms). Determination time-averaged cation positions during 298 K Rietveld refinement...
Herein we report the synthesis of an elusive metal-organic framework, iron(II) analogue ZIF-8 with formula Fe(2-methylimidazolate)2, here denoted as MUV-3. The preparation this highly interesting porous material, inaccessible by common synthetic procedures, occurs in a solvent-free reaction upon addition easily detachable template molecule, yielding single crystals This methodology can be extended to other metals and imidazolate derivatives, allowing ZIF-8, ZIF-67, unprecedented ZIFs...
ITQ-32 is able to separate propene from propane and represents a clear improvement with respect previous zeolites in achieving the separation of trans-2-butene 1-butene C(4) fraction using only one zeolite.
The first pressure-induced solid-phase synthesis of a zeolite has been found through compression common zeolite, ITQ-29 (see scheme, Si yellow, O red). new microporous structure, ITQ-50, unique structure and improved performance for propene/propane separation with respect the parent material ITQ-29. As service to our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized online delivery, but not copy-edited or...
A highly stable Metal–Organic Framework with a hierarchical structure based on the Fe<sub>3</sub>O cluster and TTF-based ligand is presented.
The choice of an appropriate adsorbent for CO2 separation by pressure-swing adsorption remains a field intense research. In this work, several FAU and LTA zeolites with different Na contents (Si/Al ratios) are studied the from mixtures CO2, CO, CH4 means breakthrough experiments. experiments were carried out between 1 5 bar at 303 K using two feed mixtures: 50/50 (v/v) CO2/CH4 75/15/15 (v/v/v) CO2/CH4/CO. most polar zeolites, i.e., those high content, exhibit highest capacity selectivity but...
The synthesis of a new microporous metal-organic framework (MOF) based on two secondary building units, with dinuclear cobalt centers, has been developed. employment well-defined cluster results in an unusual topology the Co2-MOF, where one centers three open coordination positions, which no precedent MOF materials cobalt. Adsorption isotherms have revealed that Co2-MOF is range best CO2 adsorbents among carbon materials, very high CO2/CH4 selectivity. On other hand, dispersion alcoholic...
The capture of CO2 from post-combustion streams or other mixtures, such as natural gas, is an effective way reducing emissions, which contribute to the greenhouse effect in atmosphere. One developing technologies for this purpose physisorption on selective solid adsorbents. ideal adsorbents are toward CO2, have a large adsorption capacity at atmospheric pressure and easily regenerated, resulting high working capacity. Therefore, combining molecular sieving properties low heats clear interest...
Three metal-organic frameworks with the general formula Co(BPZX) (BPZX2- = 3-X-4,4'-bipyrazolate, X H, NH2, NO2) constructed ligands having different functional groups on same skeleton have been employed as heterogeneous catalysts for aerobic liquid-phase oxidation of cumene O2 oxidant. adsorption isotherms collected at pO2 1 atm and T 195 273 K cast light relative affinity these dioxygen. The highest gas uptake is found Co(BPZ) (3.2 mmol/g (10.1 wt % O2)), in line its BET specific surface...
We present a combined computational and experimental approach to evaluate the suitability of ITQ-12 nanoporous material (ITW) as propane−propylene separation device. For this, we have computed adsorption diffusion propane propylene in zeolite. The isotherm is reproduced well, but available models literature are unable describe isotherm. Newly developed force field parameters for were obtained by fitting our own isotherms validated with previous data taken from literature. To obtain...
Abstract Mixed‐matrix membranes (MMM) consisting of poly(1‐trimethylsilyl‐1‐propyne) (PTMSP) as continuous matrix and small‐pore LTA‐framework zeolites with Si/Al ratios from 1 (commercial zeolite A) to ∞ (ITQ‐29) dispersed phase were prepared by solution casting. The thermal stability the MMM is high that glassy PTMSP polymer, whose permeability maintained even at increasing temperature. effect ratio in fillers on membrane performance observed CO 2 /N permselectivity low‐Si/Al A‐based...
Abstract A vapor‐phase adsorptive recovery process is proposed as an alternative way to isolate biobutanol from acetone–butanol–ethanol (ABE) fermentation media, offering several advantages compared liquid phase separation. The effect of water, which still present in large quantities the vapor phase, on adsorption organics could be minimized by using hydrophobic zeolites. Shape‐selective all‐silica zeolites CHA and LTA were prepared evaluated with single‐component isotherms breakthrough...
The influence of framework topology on the separation carbon dioxide from methane has been studied in a set small pore pure silica zeolites with CHA, IHW, ITW, LTA, MTF and RWR structures. To isolate this effect, composition materials kept constant by using materials, which have neither aluminium their nor extraframework cations that can alter adsorption behaviour. Pure component isotherms breakthrough experiments synthetic mixtures resembling biogas natural gas conducted. Materials Si-RWR...
Microwaving plates: A facile method was developed for the fabrication of preferentially c-oriented cobalt-substituted silicoaluminophosphate-5 (CoSAPO-5) membranes on porous alumina supports. In situ microwave growth using a slip-coated TiO2 layer support surface resulted in an oriented CoSAPO-5 crystal layer, which evolved into defect-free membrane by improving crystalline intergrowth through secondary hydrothermal growth.
c-Oriented, continuous AlPO4-5 and CoAPO-5 films with an average thickness of as low 500 nm were synthesized by seeded growth. Growth behavior was controlled appropriate manipulation the precursor mixture without altering hydrothermal temperature. Employing crystalline seeds precrystallization under proper conditions yielded a controllable uniform growth prism-shaped oriented crystals over entire substrate surface. Systematically water content affected direction, which continuously tuned...
Abstract Incorporation of germanium in zeolites is well known to confer static flexibility their framework, by stabilizing the formation small rings. In this work, we show that associated Ge atoms goes beyond effect, manifesting also a clear dynamic nature, sense it leads enhanced molecular diffusion. Our study combines experimental and theoretical methods providing evidence for which has not been described previously, as rationalization it, based on atomistic grounds. We have used both...