Zobrazeno 1 - 10
of 30
pro vyhledávání: '"G.L. Marra"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 200:155-159
In this contribution we report a structural characterization of a homoionic Ag-Y zeolite (Si/Al=2.63) on both short (EXAFS) and long range (XRD) scales. Our study shows that the zeolite is a near-100% exchanged silver faujasite, showing almost isolat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae178bec4e0852c9f144415adcc4da40
https://doi.org/10.1016/s0168-583x(02)01712-3
https://doi.org/10.1016/s0168-583x(02)01712-3
Publikováno v:
The Journal of Physical Chemistry B. 104:8641-8651
Siting of copper ions in CuI−Y zeolite, prepared by gas-phase exchange of NH4−Y with CuCl, has been investigated employing XRPD, XAS and IR spectroscopies. An X-ray powder diffraction study of the zeolite in a vacuum shows that 23.4(2) cuprous io
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::864073242e14a5e9ec4717c6e2d52b18
https://doi.org/10.1021/jp000584r
https://doi.org/10.1021/jp000584r
Autor:
M. Salvalaggio, Silvia Bordiga, A. Zecchina, Gilberto Artioli, Guido Petrini, G.L. Marra, Andrew N. Fitch, Carlo Lamberti, Angela Carati
Publikováno v:
Journal of Catalysis. 183:222-231
We present high-resolution X-ray powder diffraction (XRPD) data collected at the BM16 beamline at ESRF on a set of dehydrated Ti-silicalite-1 (TS-1) samples having Ti content (molar ratio) x =[Ti]/([Ti]+[Si]) in the range 0–0.022. The cell volume v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6742509e520c0a9b4590884df573763b
https://doi.org/10.1006/jcat.1999.2403
https://doi.org/10.1006/jcat.1999.2403
Autor:
A. Zecchina, Silvia Bordiga, Gabriele Ricchiardi, G.L. Marra, M. Salvalaggio, Andrew N. Fitch, Carlo Lamberti
Publikováno v:
Materials Science Forum. :797-802
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c46dfae9ec3cbe4f5188298b32bf91c0
https://doi.org/10.4028/www.scientific.net/msf.278-281.797
https://doi.org/10.4028/www.scientific.net/msf.278-281.797
Autor:
A. Zecchina, G.L. Marra, M. Salvalaggio, Gabriele Ricchiardi, Carlo Lamberti, Silvia Bordiga, Andrew N. Fitch
Publikováno v:
The Journal of Physical Chemistry B. 101:10653-10660
High-quality powder XRD data of a dehydrated Na−Rb−Y zeolite with Si/Al = 2.7, collected at the ESRF beam line BM16, are analyzed. The quality of the Rietveld refinement is very satisfactory, as confirmed by the low Rwp and Rp values of 7.77% and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de6cd810b3a0d6286deb0934601dac59
https://doi.org/10.1021/jp971747n
https://doi.org/10.1021/jp971747n
Autor:
Marco Milanesio, Davide Viterbo, G.L. Marra, F. Testa, Luca Palin, Carlo Lamberti, Rosario Aiello
We report the structure determinations, obtained by synchrotron radiation, single crystal X-ray diffraction experiments, of as synthesized orthorhombic MFI boron-silicalite and of pure silicalite. The synthesis in fluoride medium yielded comparativel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4a3760811fc57b0c0945363a8209761
https://doi.org/10.1016/s0167-2991(02)80366-4
https://doi.org/10.1016/s0167-2991(02)80366-4
Autor:
Luca Palin, Silvia Bordiga, Carmelo Prestipino, S. Cresi, P. Perlo, Adriano Zecchina, Carlo Lamberti, Andrew N. Fitch, G.L. Marra
In this contribution we report on structural (XRD and EXAFS), optical (UV-Vis DRS and photoluminescence) IR (adsorption of CO) characterization of a virtually homoionic Ag-Y zeolite (Si/Al=2.63). Our study shows that the zeolite is a virtually 100% e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89cef8684e8108765dd392d182e77325
https://doi.org/10.1016/s0167-2991(02)80375-5
https://doi.org/10.1016/s0167-2991(02)80375-5
The first direct evidence that Ti atoms are not equally distributed in the 12 crystallographically independent T sites of the MFI framework is presented on the basis of neutron diffraction data collected at the HRPD instrument of the ISIS pulsed neut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3290307f202672b7f111cd709658c451
http://hdl.handle.net/2318/1768
http://hdl.handle.net/2318/1768
Autor:
Guido Spano, Vera Bolis, Irene Roggero, Franco Rivetti, Carlo Lamberti, Roberto Buzzoni, G.L. Marra, Gilberto Artioli, Adriano Zecchina, Piero Ugliengo, Silvia Bordiga
The structure and the adsorptive properties of internal defects in two chemically very pure silicalite samples, characterised by a high and low concentration of defects (internal SiOH nests generated by Si vacancies), are investigated by means of sev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef52f7344c05a467ab4ee5b9547e24dd
http://hdl.handle.net/11577/2497225
http://hdl.handle.net/11577/2497225
The orthorhombic to monoclinic phase transition in an high-titanium-loaded Ti-silicalite sample (2.6 wt.% in TiO 2 ) has been studied by means of temperature-dependent high resolution powder X-ray diffraction data collected at the ESRF BM16 beam line
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39fbcf33dc7e0b7697fb4273fa14ffac
http://hdl.handle.net/11577/2497223
http://hdl.handle.net/11577/2497223