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  1. Article ; Online: Ion exchange capacity of synthetic zeolite L: a promising way for cerium recovery.

    Confalonieri, Giorgia / Vezzalini, Giovanna / Maletti, Laura / Di Renzo, Francesco / Gozzoli, Vittorio / Arletti, Rossella

    Environmental science and pollution research international

    2022  Volume 29, Issue 43, Page(s) 65176–65184

    Abstract: The increasing rare earth elements' (REE) demand to meet the market request and the current political scenario show that it is essential to find good solutions to recover these elements from waste (both industrial and mining). Zeolites are microporous ... ...

    Abstract The increasing rare earth elements' (REE) demand to meet the market request and the current political scenario show that it is essential to find good solutions to recover these elements from waste (both industrial and mining). Zeolites are microporous materials with high cation exchange capacity, up to now only little investigated for REE recycle. Here, we propose the use of NH
    Language English
    Publishing date 2022-04-28
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-022-20429-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 5915: Show issues

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  2. Article ; Online: Amino acid encapsulation in zeolite MOR: Effect of spatial confinement.

    Polisi, Michelangelo / Fabbiani, Marco / Vezzalini, Giovanna / Di Renzo, Francesco / Pastero, Linda / Quartieri, Simona / Arletti, Rossella

    Physical chemistry chemical physics : PCCP

    2021  Volume 23, Issue 36, Page(s) 20541–20552

    Abstract: In this study the absorption of glycine, α-alanine and β-alanine amino acids into the pores of the synthetic zeolite Na-mordenite was investigated with the aim of: (i) evaluating the effectiveness of the MOR framework type in amino acid adsorption ( ...

    Abstract In this study the absorption of glycine, α-alanine and β-alanine amino acids into the pores of the synthetic zeolite Na-mordenite was investigated with the aim of: (i) evaluating the effectiveness of the MOR framework type in amino acid adsorption (
    MeSH term(s) Aluminum Silicates/chemistry ; Amino Acids/chemistry ; Capsules ; Molecular Structure ; Zeolites/chemistry
    Chemical Substances Aluminum Silicates ; Amino Acids ; Capsules ; mordenite (12445-20-4) ; Zeolites (1318-02-1)
    Language English
    Publishing date 2021-09-22
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d1cp02676c
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: High-temperature behavior of natural ferrierite: In-situ synchrotron X-ray powder diffraction study.

    Arletti, Rossella / Fantini, Riccardo / Giacobbe, Carlotta / Gieré, Reto / Vezzalini, Giovanna / Vigliaturo, Ruggero / Quartieri, Simona

    The American mineralogist

    2019  Volume 103, Issue 11, Page(s) 1741–1748

    Abstract: In this paper, we report the results of the first study focused on the thermal stability and dehydration dynamics of the natural zeolite mineral ferrierite. A sample from Monastir, Sardinia [( ... ...

    Abstract In this paper, we report the results of the first study focused on the thermal stability and dehydration dynamics of the natural zeolite mineral ferrierite. A sample from Monastir, Sardinia [(Na
    Language English
    Publishing date 2019-08-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3514-2
    ISSN 0003-004X
    ISSN 0003-004X
    DOI 10.2138/am-2018-6663
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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  4. Article ; Online: Structural interpretation of the energetic performances of a pure silica LTA-type zeolite.

    Confalonieri, Giorgia / Ryzhikov, Andrey / Arletti, Rossella / Quartieri, Simona / Vezzalini, Giovanna / Isaac, Carole / Paillaud, Jean-Louis / Nouali, Habiba / Daou, T Jean

    Physical chemistry chemical physics : PCCP

    2020  Volume 22, Issue 9, Page(s) 5178–5187

    Abstract: The high pressure intrusion-extrusion process of different electrolyte aqueous solutions (NaCl and CaCl2, 2 M and 3 M) in a hydrophobic pure-silica LTA zeolite was investigated for energetic purposes by means of in situ X-ray powder diffraction, ... ...

    Abstract The high pressure intrusion-extrusion process of different electrolyte aqueous solutions (NaCl and CaCl2, 2 M and 3 M) in a hydrophobic pure-silica LTA zeolite was investigated for energetic purposes by means of in situ X-ray powder diffraction, porosimeter tests, thermogravimetric analysis and NMR spectroscopy. The intrusion pressure of the saline solutions was proved to be higher than that of pure water, with the highest value measured for CaCl2, thus increasing the energetic performance of the system. The intrusion of NaCl solutions was irreversible (bumper behavior), whereas that of CaCl2 solutions is partially reversible (shock absorber behavior). The structural investigation allowed interpreting these results on the basis of the different intrusion mechanisms, in turn induced by the different nature of the cations present in the electrolyte solutions. When Si-LTA is intruded by NaCl solution, firstly H2O molecules penetrate the pores, leading to higher silanol defect formation followed by the solvated ions. With CaCl2, instead, due to a higher solvation enthalpy of Ca2+, a higher pressure is required for intrusion, and both H2O and ions penetrate at the same pressure. The structural refinements demonstrate (i) a different arrangement of the extraframework species in the two systems, (ii) the intrusion of the salt solutions occurs through strong desolvation of the ions and (iii) the salt/H2O ratios of the intruded species are higher than those of the starting electrolyte solutions.
    Language English
    Publishing date 2020-02-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/c9cp06760d
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: High-pressure-induced structural changes, amorphization and molecule penetration in MFI microporous materials: a review.

    Vezzalini, Giovanna / Arletti, Rossella / Quartieri, Simona

    Acta crystallographica Section B, Structural science, crystal engineering and materials

    2014  Volume 70, Issue Pt 3, Page(s) 444–451

    Abstract: This is a comparative study on the high-pressure behavior of microporous materials with an MFI framework type (i.e. natural mutinaite, ZSM-5 and the all-silica phase silicalite-1), based on in-situ experiments in which penetrating and non-penetrating ... ...

    Abstract This is a comparative study on the high-pressure behavior of microporous materials with an MFI framework type (i.e. natural mutinaite, ZSM-5 and the all-silica phase silicalite-1), based on in-situ experiments in which penetrating and non-penetrating pressure-transmitting media were used. Different pressure-induced phenomena and deformation mechanisms (e.g. pressure-induced over-hydration, pressure-induced amorphization) are discussed. The influence of framework and extra-framework composition and of the presence of silanol defects on the response to the high pressure of MFI-type zeolites is discussed.
    Language English
    Publishing date 2014-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 2020841-8
    ISSN 2052-5206 ; 1600-5740 ; 2052-5192 ; 0108-7681
    ISSN (online) 2052-5206 ; 1600-5740
    ISSN 2052-5192 ; 0108-7681
    DOI 10.1107/S2052520614008014
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Pressure-induced penetration of guest molecules in high-silica zeolites: the case of mordenite.

    Arletti, R / Leardini, L / Vezzalini, G / Quartieri, S / Gigli, L / Santoro, M / Haines, J / Rouquette, J / Konczewicz, L

    Physical chemistry chemical physics : PCCP

    2015  Volume 17, Issue 37, Page(s) 24262–24274

    Abstract: A synthetic high-silica mordenite (HS-MOR) has been compressed in both non-penetrating (silicone oil, s.o.) and penetrating [methanol : ethanol : water (16 : 3 : 1) (m.e.w.), water : ethanol (3 : 1) (w.e.), and ethylene glycol (e.gl.)] pressure ... ...

    Abstract A synthetic high-silica mordenite (HS-MOR) has been compressed in both non-penetrating (silicone oil, s.o.) and penetrating [methanol : ethanol : water (16 : 3 : 1) (m.e.w.), water : ethanol (3 : 1) (w.e.), and ethylene glycol (e.gl.)] pressure transmitting media (PTM). In situ high-pressure (HP) synchrotron X-ray powder diffraction (XRPD) experiments allowed the unit cell parameters to be followed up to 1.6, 1.8, 8.4, and 6.7 GPa in s.o., w.e., m.e.w., and e.gl., respectively. Moreover, e.gl. was also used as a PTM in in situ HP Raman and ex situ IR experiments. The structural refinement of HS-MOR compressed in e.gl. at 0.1 GPa - the lowest investigated pressure - revealed the presence of 3.5 ethylene glycol molecules per unit cell. The infrared spectrum of the recovered sample, after compression to 1 GPa, is consistent with the insertion of ethylene glycol molecules in the pores. XRPD and Raman spectroscopy experiments performed under pressure indicated the insertion of a small number of guest molecules. Ethylene glycol is partially retained inside mordenite upon pressure release. A symmetry lowering was observed in s.o. above 0.8 GPa, while above 1.6 GPa the patterns indicated a rapid loss of long range order. From ambient pressure (Pamb) to 1.6 GPa, a high cell volume contraction (ΔV = -9.5%) was determined. The patterns collected with penetrating PTM suggested the penetration of guest molecules into the porous host matrix, starting from a very low P regime. The entrapment of PTM molecules inside micropores contributes to the stiffening of the structure and, as a consequence, to the decrease of the compressibility with respect to that measured in s.o. From the structural point of view, HS-MOR reacts to compression and to the penetration of different guest species with appropriate framework deformations. Interestingly, ethylene glycol is partially retained inside mordenite upon pressure release, which is of importance for potential application of this composite material.
    Language English
    Publishing date 2015-10-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/c5cp03561a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Irreversible Conversion of a Water-Ethanol Solution into an Organized Two-Dimensional Network of Alternating Supramolecular Units in a Hydrophobic Zeolite under Pressure.

    Arletti, Rossella / Fois, Ettore / Gigli, Lara / Vezzalini, Giovanna / Quartieri, Simona / Tabacchi, Gloria

    Angewandte Chemie (International ed. in English)

    2017  Volume 56, Issue 8, Page(s) 2105–2109

    Abstract: Turning disorder into organization is a key issue in science. By making use of X-ray powder diffraction and modeling studies, we show herein that high pressures in combination with the shape and space constraints of the hydrophobic all-silica zeolite ... ...

    Abstract Turning disorder into organization is a key issue in science. By making use of X-ray powder diffraction and modeling studies, we show herein that high pressures in combination with the shape and space constraints of the hydrophobic all-silica zeolite ferrierite separate an ethanol-water liquid mixture into ethanol dimer wires and water tetramer squares. The confined supramolecular blocks alternate in a binary two-dimensional (2D) architecture that remains stable upon complete pressure release. These results support the combined use of high pressures and porous networks as a viable strategy for driving the organization of molecules or nano-objects towards complex, pre-defined patterns relevant for the realization of novel functional nanocomposites.
    Language English
    Publishing date 2017-01-09
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2011836-3
    ISSN 1521-3773 ; 1433-7851
    ISSN (online) 1521-3773
    ISSN 1433-7851
    DOI 10.1002/anie.201610949
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  8. Article: Borosilicate and aluminosilicate pollucite nanocrystals for the storage of radionuclides

    Montagna, Gabriele / Arletti, Rossella / Vezzalini, Giovanna / Di Renzo, Francesco

    Powder technology

    Volume v. 208,, Issue no. 2

    Abstract: Cesium can be encapsulated in crystalline aluminosilicates or borosilicates of ANA framework type by hydrothermal synthesis from alkaline solutions at a temperature as low as 115°C. No miscibility gap is observed in the borosilicate–aluminosilicate solid ...

    Abstract Cesium can be encapsulated in crystalline aluminosilicates or borosilicates of ANA framework type by hydrothermal synthesis from alkaline solutions at a temperature as low as 115°C. No miscibility gap is observed in the borosilicate–aluminosilicate solid solution. The presence of cesium in the synthesis batch slightly decreases the yield of incorporation of boron in the silicate framework. Nanocrystals from 25 to 50nm are formed in most of the synthesis conditions.
    Keywords nanocrystals ; radionuclides ; cesium ; boron ; temperature
    Language English
    Document type Article
    ISSN 0032-5910
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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