A5005716916- Catalytic Processes in Materials Science
- Zeolite Catalysis and Synthesis
- Catalysis and Oxidation Reactions
- Metal-Organic Frameworks: Synthesis and Applications
- X-ray Diffraction in Crystallography
- Mesoporous Materials and Catalysis
- Crystallization and Solubility Studies
- Chemical Synthesis and Characterization
- Carbon dioxide utilization in catalysis
- Catalysts for Methane Reforming
- Catalysis and Hydrodesulfurization Studies
- Magnetism in coordination complexes
- Machine Learning in Materials Science
- Polyoxometalates: Synthesis and Applications
- Advanced Chemical Physics Studies
- Thermal and Kinetic Analysis
- Advanced Photocatalysis Techniques
- Hydrogen Storage and Materials
- Crystallography and molecular interactions
- Gas Sensing Nanomaterials and Sensors
- Organometallic Complex Synthesis and Catalysis
- Carbon Dioxide Capture Technologies
- Electrocatalysts for Energy Conversion
- CO2 Reduction Techniques and Catalysts
- Advanced NMR Techniques and Applications
National Interuniversity Consortium of Materials Science and Technology
2016-2025
University of Turin
2016-2025
University of Oslo
2011-2024
Torino e-district
2014-2020
657 Oslo
2017-2020
Dutch Polymer Institute
2020
Laboratoire National de Référence
2015-2017
Haldor Topsoe (Denmark)
2006-2015
KU Leuven
2015
Interface (United States)
2014
Porous crystals are strategic materials with industrial applications within petrochemistry, catalysis, gas storage, and selective separation. Their unique properties based on the molecular-scale porous character. However, a principal limitation of zeolites similar oxide-based is relatively small size pores, typically in range medium-sized molecules, limiting their use pharmaceutical fine chemical applications. Metal organic frameworks (MOFs) provided breakthrough this respect. New MOFs...
Liquid hydrocarbon fuels play an essential part in the global energy chain, owing to their high density and easy transportability. Olefins a similar role production of consumer goods. In post-oil society, fuel olefin will rely on alternative carbon sources, such as biomass, coal, natural gas, CO(2). The methanol-to-hydrocarbons (MTH) process is key step routes, can be tuned into gasoline-rich (methanol gasoline; MTG) or olefin-rich olefins; MTO) product mixtures by proper choice catalyst...
Through a combined use of experimental and theoretical approaches such as XRPD, EXAFS, IR, UV−vis spectroscopies ab initio periodic DFT calculations, we report detailed characterization structural, vibrational, electronic properties UiO-66 (Zr-BDC MOF) in its hydroxylated dehydroxylated forms. The stability the materials with respect to most common solvents, acids, bases is determined by combining XRPD TGA/MS techniques. structures two forms are refined through an interactive XRPD/EXAFS...
Presented in this paper is a deep investigation into the defect chemistry of UiO-66 when synthesized presence monocarboxylic acid modulators under most commonly employed conditions. We unequivocally demonstrate that missing cluster defects are predominant and their concentration (and thus porosity composition material) can be tuned to remarkable extent by altering and/or acidity modulator. Finally, we attempt rationalize these observations speculating on underlying solution chemistry.
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTTuned to Perfection: Ironing Out the Defects in Metal–Organic Framework UiO-66Greig C. Shearer†, Sachin Chavan†, Jayashree Ethiraj‡, Jenny G. Vitillo‡, Stian Svelle†, Unni Olsbye†, Carlo Lamberti‡, Silvia Bordiga†‡, and Karl Petter Lillerud*†View Author Information† inGAP Centre for Research Based Innovation, Department of Chemistry, University Oslo, P.O. Box 1033, N-0315 Norway‡ NIS INSTM Reference Centre, Via Quarello 15, I-10135 Torino,...
XRD, UV−Vis, EXAFS, XANES, and Raman techniques have been used to study the removal of water molecules coordinated Cu(II) framework atoms novel HKUST-1 metal-organic framework. The dehydration process preserves crystalline nature material, just causing a reduction cell volume due shrinking [Cu2C4O8] cage. adsorbed H2O molecule makes sites available for interaction with other probe molecules. In situ IR spectroscopy has evidenced formation at liquid nitrogen temperature labile Cu(II)···CO...
MOF-5 is the archetype metal−organic framework and has been subjected to numerous studies past few years. The focal point of this report pitfalls related phase identification based on powder XRD data. A broad set conditions procedures have reported for synthesis. These variations led materials with substantially different adsorption properties (specific surface areas in range 700 3400 m2/g). relatively low weight loss observed some as synthesized samples upon solvent removal also indicative...
Gas adsorption experiments have been carried out on a copper benzene tricarboxylate metal−organic framework material, HKUST-1. Hydrogen at 1 and 10 bar (both 77 K) gives an capacity of 11.16 mmol H2 per g HKUST-1 (22.7 mg g-1, 2.27 wt %) 18 (36.28 3.6 bar. Adsorption D2 (77 is between 1.09 (at bar) 1.20(at <100 mbar) times the values depending pressure, agreeing with theoretical expectations. Gravimetric measurements NO 196 K (1 large ∼9 which significantly greater than any other reported...
The air-free reaction between FeCl(2) and H(4)dobdc (dobdc(4-) = 2,5-dioxido-1,4-benzenedicarboxylate) in a mixture of N,N-dimethylformamide (DMF) methanol affords Fe(2)(dobdc)·4DMF, metal-organic framework adopting the MOF-74 (or CPO-27) structure type. desolvated form this material displays Brunauer-Emmett-Teller (BET) surface area 1360 m(2)/g features hexagonal array one-dimensional channels lined with coordinatively unsaturated Fe(II) centers. Gas adsorption isotherms at 298 K indicate...
UV-Vis DRS and photoluminescence (PL) spectroscopy, combined with excitation selective Raman allow us to understand the main optical vibrational properties of a metal-organic MOF-5 framework. A O(2-)Zn(2+)[rightward arrow] O(-)Zn(+) ligand metal charge transfer transition (LMCT) at 350 nm, testifies that Zn(4)O(13) cluster behaves as ZnO quantum dot (QD). The organic part acts photon antenna able efficiently energy inorganic ZnO-like QD part, where an intense emission 525 nm occurs.
For the first time, standard and fast selective catalytic reduction (SCR) of NO by NH3 are described in a complete cycle that is able to produce correct stoichiometry while allowing adsorption desorption stable molecules only. The SCR reaction coupling activation O2 with reaction, enabled release NO2. According scheme, can be divided into an oxidation catalyst + NH3; these steps together constitute cycle. Furthermore, both required reduction, finally, or NO2 leads same state catalyst. These...
The recently discovered UiO-66/67/68 class of isostructural metallorganic frameworks (MOFs) [J. H. Cavka et al. J. Am. Chem. Soc., 2008, 130, 13850] has attracted great interest because its remarkable stability at high temperatures, pressures and in the presence different solvents, acids bases [L. Valenzano Mater., 2011, 23, 1700]. UiO-66 is obtained by connecting Zr6O4(OH)4 inorganic cornerstones with 1,4-benzene-dicarboxylate (BDC) as linker resulting a cubic MOF, which already been...
The role of exposed metal sites in increasing the H2 storage performances metal-organic frameworks (MOFs) has been investigated by means IR spectrometry. Three MOFs have considered: MOF-5, with unexposed sites, and HKUST-1 CPO-27-Ni, Cu(2+) Ni(2+), respectively. onset temperature spectroscopic features associated adsorbed correlates adsorption enthalpy obtained VTIR method shift experienced H-H stretching frequency. This relationship can be ascribed to different nature accessibility sites....
A thorough analysis of the vibrational features titanium silicalite-1 (TS-1) catalyst is presented, based on quantitative IR measurements, Raman and resonant experiments, XANES, quantum chemical calculations cluster periodic models. The linear correlation intensity bands located at 960 1125 cm(-1) XANES peak 4967 eV with amount tetrahedral Ti are quantitatively demonstrated. spectra silicalite TS-1 variable content showing main associated insertion into zeolite framework. enhancement feature...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTXAFS Study of Ti-Silicalite: Structure Framework Ti(IV) in the Presence and Absence Reactive Molecules (H2O, NH3) Comparison with Ultraviolet-Visible IR ResultsS. Bordiga, S. Coluccia, C. Lamberti, L. Marchese, A. Zecchina, F. Boscherini, Buffa, Genoni, G. Leofanti, Cite this: J. Phys. Chem. 1994, 98, 15, 4125–4132Publication Date (Print):April 1, 1994Publication History Published online1 May 2002Published inissue 1 April...