Enhancement of D 2 /H 2 Selectivity in Zeolite A through Partial Na–K Exchange: Single-Gas and Coadsorption Studies at 45–77 K

Autor: Jean-Pierre Bellat, Igor Bezverkhyy, Maxence Giraudet, Céline Dirand, Mathieu Macaud

Publikováno v: Journal of Physical Chemistry C
Journal of Physical Chemistry C, American Chemical Society, 2020, 124 (45), pp.24756-24764. ⟨10.1021/acs.jpcc.0c06902⟩

International audience; We report D2/H2 adsorption selectivities under cryogenic temperatures (45-77 K) in Na and K-Na exchanged zeolites A (LTA structural code) measured by co-adsorption technique. These values are systematically compared with Ideal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7373d2b57e0a6b4341faf4b9abde82e
https://hal.archives-ouvertes.fr/hal-03006822/file/Manuscript_JPCC_2020.pdf

Enhanced quantum sieving of hydrogen isotopes via molecular rearrangement of the adsorbed phase in chabazite

Autor: Jean-Pierre Bellat, Igor Bezverkhyy, Jean-Marc Simon, Mathieu Macaud, Bastien Radola, José Marcos Salazar

Publikováno v: Chemical Communications
Chemical Communications, Royal Society of Chemistry, 2020, 56 (41), pp.5564-5566. ⟨10.1039/D0CC02060E⟩
Chemical Communications, Royal Society of Chemistry, 2020, 56 (41), pp.5564-5566. ⟨10.1039/d0cc02060e⟩

Coadsorption experiments reveal an unexpected increase of the D2/H2 selectivity with loading in pure silica chabazite at 47 K. This effect is correlated with the appearance of a step in the adsorption isotherms of H2 and D2. Grand canonical Monte Car

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72f83e7e5c9f2abd5e67c1509ae5b824
https://hal.archives-ouvertes.fr/hal-03006850

D2 and H2 adsorption capacity and selectivity in CHA zeolites: Effect of Si/Al ratio, cationic composition and temperature

Autor: Mathieu Macaud, Quentin Pujol, Jean-Pierre Bellat, Céline Dirand, Igor Bezverkhyy, Frédéric Herbst

Publikováno v: Microporous and Mesoporous Materials
Microporous and Mesoporous Materials, Elsevier, 2020, 302, pp.110217. ⟨10.1016/j.micromeso.2020.110217⟩

International audience; The work deals with the effect of composition of CHA zeolites on the adsorption and separation of H2 and D2 under cryogenic temperatures. In the first part of this work the effect of Si/Al ratio and cationic composition on sin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e100483b424a8961d9957330e64f3483
https://doi.org/10.1016/j.micromeso.2020.110217

Adsorption of hydrogen isotopes in the zeolite NaX: Experiments and simulations

Autor: C. Gauvin, Jean-Pierre Bellat, Igor Bezverkhyy, Guy Weber, Jean-Marc Simon, J. M. Salazar, S. Lectez, Mathieu Macaud

Publikováno v: International Journal of Hydrogen Energy
International Journal of Hydrogen Energy, Elsevier, 2017, 42 (18), pp.13099-13110. ⟨10.1016/j.ijhydene.2017.03.222⟩

Among the different methods to separate hydrogen isotopes one is based on the physisorption at low temperature (below 100 K) where quantum effects induce a particular behavior. In the present work, we study the adsorption of single H 2 and D 2 on the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edbdc18ad04040642f083ae39a79e083
https://hal.archives-ouvertes.fr/hal-02368548

How could organic synthesis help the understanding of the problems of deep hydrodesulfurization of gasoils?

Autor: Michel Vrinat, Alexandra Milenkovic, Marc Lemaire, Emmanuelle Schulz, Tamás Koltai, Mathieu Macaud, David Loffreda

Publikováno v: Comptes rendus de l’Académie des sciences. Série IIc, Chimie
Comptes rendus de l’Académie des sciences. Série IIc, Chimie, Elsevier, 2000, pp.459-463

Plusieurs alkyldibenzothiophenes substitues par des groupements alkyles en position 4 et 6 ont ete synthetises. Nous avons compare leur reactivite en hydrodesulfuration sur un catalyseur industriel NiMo/Al 2 O 3 dans un reacteur ferme a 573 K et sous

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02227a12045d83cfdfcdd9ef343dc083
https://doi.org/10.1016/s1387-1609(00)00128-6