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Azzena U, Carraro M, Pisano L, Pintus E, Pintus S, Polese R, Satta P, Gaspa S, De Luca L, Taras A, Garroni S. Size Selectivity in the Hydroxylation of Esters of Unsaturated Fatty Acids. EUR J LIPID SCI TECH 2022. [DOI: 10.1002/ejlt.202100234] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- U. Azzena
- Dipartimento di Chimica e Farmacia Università degli Studi di Sassari via Vienna 2, I‐07100 Sassari Italy
| | - M. Carraro
- Dipartimento di Chimica e Farmacia Università degli Studi di Sassari via Vienna 2, I‐07100 Sassari Italy
- Consorzio Interuniversitario Reattività Chimica e Catalisi (CIRCC) via Ulpiani 27, I‐70126 Bari Italy
| | - L. Pisano
- Dipartimento di Chimica e Farmacia Università degli Studi di Sassari via Vienna 2, I‐07100 Sassari Italy
| | - E. Pintus
- Dipartimento di Chimica e Farmacia Università degli Studi di Sassari via Vienna 2, I‐07100 Sassari Italy
| | - S. Pintus
- Dipartimento di Chimica e Farmacia Università degli Studi di Sassari via Vienna 2, I‐07100 Sassari Italy
| | - R. Polese
- Dipartimento di Chimica e Farmacia Università degli Studi di Sassari via Vienna 2, I‐07100 Sassari Italy
| | - P. Satta
- Dipartimento di Chimica e Farmacia Università degli Studi di Sassari via Vienna 2, I‐07100 Sassari Italy
| | - S. Gaspa
- Dipartimento di Chimica e Farmacia Università degli Studi di Sassari via Vienna 2, I‐07100 Sassari Italy
| | - L. De Luca
- Dipartimento di Chimica e Farmacia Università degli Studi di Sassari via Vienna 2, I‐07100 Sassari Italy
| | - A. Taras
- Dipartimento di Chimica e Farmacia Università degli Studi di Sassari via Vienna 2, I‐07100 Sassari Italy
| | - S. Garroni
- Dipartimento di Chimica e Farmacia Università degli Studi di Sassari via Vienna 2, I‐07100 Sassari Italy
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Santoru A, Garroni S, Pistidda C, Milanese C, Girella A, Marini A, Masolo E, Valentoni A, Bergemann N, Le TT, Cao H, Haase D, Balmes O, Taube K, Mulas G, Enzo S, Klassen T, Dornheim M. A new potassium-based intermediate and its role in the desorption properties of the K-Mg-N-H system. Phys Chem Chem Phys 2016; 18:3910-20. [PMID: 26765796 DOI: 10.1039/c5cp06963g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New insights into the reaction pathways of different potassium/magnesium amide-hydride based systems are discussed. In situ SR-PXD experiments were for the first time performed in order to reveal the evolution of the phases connected with the hydrogen releasing processes. Evidence of a new K-N-H intermediate is shown and discussed with particular focus on structural modification. Based on these results, a new reaction mechanism of amide-hydride anionic exchange is proposed.
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Affiliation(s)
- A Santoru
- Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht GmbH, Max-Planck Strasse 1, D-21502 Geesthacht, Schleswig-Holstein, Germany.
| | - S Garroni
- Department of Chemistry and Pharmacy, INSTM, Via Vienna 2, I-07100 Sassari, Italy
| | - C Pistidda
- Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht GmbH, Max-Planck Strasse 1, D-21502 Geesthacht, Schleswig-Holstein, Germany.
| | - C Milanese
- Pavia H2 Lab, Department of Chemistry, Physical Chemistry Section, University of Pavia, VialeTaramelli 16, I-27100 Pavia, Italy
| | - A Girella
- Pavia H2 Lab, Department of Chemistry, Physical Chemistry Section, University of Pavia, VialeTaramelli 16, I-27100 Pavia, Italy
| | - A Marini
- Pavia H2 Lab, Department of Chemistry, Physical Chemistry Section, University of Pavia, VialeTaramelli 16, I-27100 Pavia, Italy
| | - E Masolo
- Department of Chemistry and Pharmacy, INSTM, Via Vienna 2, I-07100 Sassari, Italy
| | - A Valentoni
- Department of Chemistry and Pharmacy, INSTM, Via Vienna 2, I-07100 Sassari, Italy
| | - N Bergemann
- Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht GmbH, Max-Planck Strasse 1, D-21502 Geesthacht, Schleswig-Holstein, Germany.
| | - T T Le
- Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht GmbH, Max-Planck Strasse 1, D-21502 Geesthacht, Schleswig-Holstein, Germany.
| | - H Cao
- Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht GmbH, Max-Planck Strasse 1, D-21502 Geesthacht, Schleswig-Holstein, Germany.
| | - D Haase
- MAX IV Laboratory, Lund University, Römers väg 1, 22363 Lund, Sweden
| | - O Balmes
- MAX IV Laboratory, Lund University, Römers väg 1, 22363 Lund, Sweden
| | - K Taube
- Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht GmbH, Max-Planck Strasse 1, D-21502 Geesthacht, Schleswig-Holstein, Germany.
| | - G Mulas
- Department of Chemistry and Pharmacy, INSTM, Via Vienna 2, I-07100 Sassari, Italy
| | - S Enzo
- Department of Chemistry and Pharmacy, INSTM, Via Vienna 2, I-07100 Sassari, Italy
| | - T Klassen
- Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht GmbH, Max-Planck Strasse 1, D-21502 Geesthacht, Schleswig-Holstein, Germany.
| | - M Dornheim
- Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht GmbH, Max-Planck Strasse 1, D-21502 Geesthacht, Schleswig-Holstein, Germany.
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Fernández Albanesi L, Garroni S, Enzo S, Gennari FC. New amide-chloride phases in the Li-Al-N-H-Cl system: formation and hydrogen storage behaviour. Dalton Trans 2016; 45:5808-14. [PMID: 26939035 DOI: 10.1039/c5dt04564a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New amide-chloride phases were successfully synthesized by mechanical milling of the LiNH2-AlCl3 mixture at a molar ratio of 1 : 0.11 and further heating at 150 °C under argon (0.1 MPa) or under hydrogen pressure (0.7 MPa). Powder X-ray diffraction measurements as a function of milling time increase revealed that the milling of the LiNH2-0.11AlCl3 mixture results in the formation of a FCC solid solution with an excess of LiNH2. Subsequent heating of the LiNH2-0.11AlCl3 sample ball milled for 5 hours at 150 °C under argon or under hydrogen induces the appearance of an amide-chloride phase isostructural with cubic Li4(NH2)3Cl. This Li-Al-N-H-Cl phase transforms progressively into the trigonal phase after prolonged heating at 300 °C under hydrogen pressure. The thermal behaviour of the amide-chloride without and with LiH addition displays dissimilar decomposition pathways. The decomposition of amide-chloride alone involves the formation of ammonia and hydrogen from 120 to 300 °C. Conversely, the amide-chloride material in the presence of LiH only releases hydrogen avoiding the emission of ammonia. The resultant material is able to be rehydrogenated under moderate conditions (300 °C, 0.7 MPa H2), providing a new reversible hydrogen storage system.
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Affiliation(s)
- L Fernández Albanesi
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro Atómico Bariloche (CNEA) and Instituto Balseiro (UNCu), Av. Bustillo 9500, R8402AGP Bariloche, Río Negro, Argentina.
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