Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Gagik Barkhordarian"'
Autor:
Sebastiano Garroni, Thomas Klassen, Agnieszka Rzeszutek, Maria Dolores Baró, Gagik Barkhordarian, Pau Nolis, Claudio Pistidda, C. Bonatto Minella, M. Dornheim, Rüdiger Bormann
Publikováno v:
Scripta Materialia. 64:1035-1038
A novel method to enhance the reaction kinetics of the reactive hydride composite 2NaBH4 + MgH2 is described. It has been discovered that short-term exposure to a moist atmosphere has a very beneficial effect on the desorption reaction of the 2NaBH4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b52353e0cea820e7bb3960f2b6c4984d
https://doi.org/10.1016/j.scriptamat.2011.02.017
https://doi.org/10.1016/j.scriptamat.2011.02.017
Autor:
Ulrike Bösenberg, Gagik Barkhordarian, Torben R. Jensen, Rüdiger Bormann, Karina Suarez, Christian Bonatto Minella, Rapee Gosalawit-Utke, José M. Bellosta von Colbe, Yngve Cerenius, Claudio Pistidda, Matthias Schulze, Thomas Klassen, Martin Dornheim
Publikováno v:
The Journal of Physical Chemistry C
Gosalawit-Utke, R, Suarez, K, Bellosta von Colbe, J M, Bösenberg, U, Jensen, T R, Cerenius, Y, Bonatto Minella, C, Pistidda, C, Barkhordarian, G, Schulze, M, Klassen, T, Bohrmann, R & Dornheim, M 2011, ' Ca(BH 4 ) 2 −MgF 2 Reversible Hydrogen Storage: Reaction Mechanisms and Kinetic Properties ', Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, vol. 115, no. 9, pp. 3762-3768 . https://doi.org/10.1021/jp108236e
Gosalawit-Utke, R, Suarez, K, Bellosta von Colbe, J M, Bösenberg, U, Jensen, T R, Cerenius, Y, Bonatto Minella, C, Pistidda, C, Barkhordarian, G, Schulze, M, Klassen, T, Bohrmann, R & Dornheim, M 2011, ' Ca(BH 4 ) 2 −MgF 2 Reversible Hydrogen Storage: Reaction Mechanisms and Kinetic Properties ', Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, vol. 115, no. 9, pp. 3762-3768 . https://doi.org/10.1021/jp108236e
A composite of Ca(BH4)2−MgF2 is proposed as a reversible hydrogen storage system. The dehydrogenation and rehydrogenation reaction mechanisms are investigated by in situ time-resolved synchrotron radiation powder X-ray diffraction (SR-PXD) and Rama
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::137a7f3f93cc4acee6ae224af49a7809
Publikováno v:
Journal of Materials Research. 24:3454-3461
Allotropic hexagonal-close-packed (hcp) → face-centered-cubic (fcc) transformations were reported in Group IVB elements titanium (Ti), zirconium (Zr), and hafnium (Hf) subjected to mechanical milling in a high-energy SPEX shaker mill. Although the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7706d9ef6bb0501594f30c6a92bd0615
https://doi.org/10.1557/jmr.2009.0423
https://doi.org/10.1557/jmr.2009.0423
Autor:
Gagik Barkhordarian, Michael Bielmann, Andreas Züttel, R. Bormann, Martin Dornheim, Andreas Borgschulte
Publikováno v:
Borgschulte, A, Bielmann, M, Zuttel, A, Barkhordarian, G, Dornheim, M & Bormann, R 2008, ' Hydrogen dissociation on oxide covered MgH2 by catalytically active vacancies ', Applied Surface Science, vol. 254, no. 8, pp. 2377-2384 . https://doi.org/10.1016/j.apsusc.2007.09.069
Applied Surface Science, 254(8), 2377-2384. Elsevier
Applied Surface Science, 254(8), 2377-2384. Elsevier
MgH 2 is an important ingredient in modern reactive hydride composites to be used as hydrogen storage materials. The surface composition and chemical state of ball-milled MgH 2 is studied during hydrogen desorption by means of X-ray photoelectron spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2005a5e1f55f874b2c1fdc4e2cdeeb76
https://hdl.handle.net/1871/30873
https://hdl.handle.net/1871/30873
Autor:
Ulrike Bösenberg, Martin Dornheim, Oliver Gutfleisch, Stefania Doppiu, N. Eigen, Torben R. Jensen, Rüdiger Bormann, Andreas Borgschulte, Lene Mosegaard, Gagik Barkhordarian, Thomas Klassen, Yngve Cerenius
Publikováno v:
Acta Materialia. 55:3951-3958
A detailed analysis of the reaction mechanism of the reactive hydride composite (RHC) MgH2 + 2LiBH(4) MgB2 + 2LiH + 4H(2) was performed using high-pressure differential scanning calorimetry (HP-DSC) measurements and in situ synchrotron powder X-ray d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::688c280c0b2c89238f11bcd7e8b63951
https://doi.org/10.1016/j.actamat.2007.03.010
https://doi.org/10.1016/j.actamat.2007.03.010
Autor:
Gagik Barkhordarian, Oliver Gutfleisch, R. Bormann, Martin Dornheim, Thomas Klassen, U. Boesenberg, Stefania Doppiu
Publikováno v:
Scripta Materialia. 56:841-846
Mg and Mg-based hydrides have attracted much attention because of their high gravimetric hydrogen storage densities and favourable kinetic properties. Due to novel preparation methods and the development of suitable catalysts, hydrogen uptake and des
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91bf2da03f565d1684264335a1bffe09
https://doi.org/10.1016/j.scriptamat.2007.01.003
https://doi.org/10.1016/j.scriptamat.2007.01.003
Publikováno v:
Catalysis Today. 120:262-269
The kinetics of the reversible reaction of hydrogen gas with magnesium forming MgH2 is enhanced significantly by the addition of transition metals oxide catalysts and by using nanostructured powders. Hydrogen absorption and desorption properties of s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af0c90c760df95358462054da5f49b06
https://doi.org/10.1016/j.cattod.2006.09.031
https://doi.org/10.1016/j.cattod.2006.09.031
Publikováno v:
Advanced Engineering Materials. 8:377-385
A breakthrough in hydrogen storage technology was achieved by preparing nanocrystalline hydrides using high-energy ball milling and the use of suitable catalysts/additives. These new materials show fast or in case of Mg-based hydrides very fast absor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d8d41496997b0d5f8390171706037be
https://doi.org/10.1002/adem.200600018
https://doi.org/10.1002/adem.200600018
Publikováno v:
Journal of Alloys and Compounds. 407:249-255
The effect of milling time and Nb 2 O 5 content on the magnesium hydrogen sorption reaction is investigated in this paper. The absorption and desorption kinetics of magnesium at 300 °C, with 0.05, 0.1, 0.2, 0.5, 1 mol% Nb 2 O 5 contents and after 2,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd58d3e66cd78ec32003a0981d3f07a6
https://doi.org/10.1016/j.jallcom.2005.05.037
https://doi.org/10.1016/j.jallcom.2005.05.037
Publikováno v:
Scripta Materialia. 49:213-217
The efficiency of Nb2O5 as a catalyst for hydrogen sorption reaction of magnesium is investigated. Absorption and desorption kinetics are determined at 250 and 300 °C and are compared to other metal and oxide catalysts. The results demonstrate that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10ec011215e9a93974900f2547ba42e9
https://doi.org/10.1016/s1359-6462(03)00259-8
https://doi.org/10.1016/s1359-6462(03)00259-8