Zobrazeno 1 - 10
of 66
pro vyhledávání: '"B. Deroide"'
Autor:
Deborah J. Jones, B. Deroide, Guillaume Aptel, Jean-Victor Zanchetta, Jacques Rozière, Fouzia Khattou
Publikováno v:
Microporous and Mesoporous Materials. 47:231-241
Silica-pillared zirconium phosphate shows both micro- and mesoporous character, with an average pore dimension of 23 A after calcination at 480°C. Cu2+ coordinates in solution to the molecular precursor of the silica pillars, 2-aminoethyl-3-aminopro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b18a1fe16601a8cd589b1bf7a7a19aae
https://doi.org/10.1016/s1387-1811(01)00383-3
https://doi.org/10.1016/s1387-1811(01)00383-3
Publikováno v:
Journal of Non-Crystalline Solids. 291:78-85
Ge–S glasses are synthesised by melting pure S and Ge elements. Electron paramagnetic resonance (EPR) spectroscopy is used to analyse the paramagnetic defects in these glasses. Paramagnetic defects are also observed in amorphous and polycrystalline
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ea9ebd4d0d618666e723c0b7732e3b8
https://doi.org/10.1016/s0022-3093(01)00807-9
https://doi.org/10.1016/s0022-3093(01)00807-9
Autor:
Joop A. Peters, Daniel Brunel, Janos B. Nagy, Michel J. Verhoef, François Fajula, B. Deroide, H. van Bekkum, Lars Veum
Publikováno v:
Applied Catalysis A: General. 213:73-82
A new heterogeneous system for catalytic oxidations has been developed by immobilising TEMPO onto ordered mesoporous silica (MCM-41-type). The immobilisation was performed according to different methods: (i) direct grafting of the silica surface with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77f2fff45b6d5e19398f042350a66b73
https://doi.org/10.1016/s0926-860x(00)00886-3
https://doi.org/10.1016/s0926-860x(00)00886-3
Publikováno v:
Journal of Physics and Chemistry of Solids. 61:1623-1632
A natural clay of South of France is studied by electron spin resonance (ESR). Two radiation-induced defects are revealed, certainly localized in the quartz contained in clay. The first is the peroxy-center, associated with oxygen, formed by the acti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::227e7ac94ea0738c22ba118e400e3cfb
https://doi.org/10.1016/s0022-3697(00)00048-2
https://doi.org/10.1016/s0022-3697(00)00048-2
Publikováno v:
Journal of Physics and Chemistry of Solids. 61:819-826
Glasses of composition (V 2 O 5 ) x (B 2 O 3 ) 1− x with x =0.1, 0.3, 0.5, 0.7 and 0.9 were obtained by a quenching technique. Conductivity measurements using σ ac were performed on compact pellets of these materials. The conductivity behavior in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bddc998251ac3528ab92ac0d88f83b6d
https://doi.org/10.1016/s0022-3697(99)00306-6
https://doi.org/10.1016/s0022-3697(99)00306-6
Publikováno v:
Journal of Physics and Chemistry of Solids. 60:813-818
A clay was fired at 800°C, which is the firing temperature generally observed in the manufacture of ancient pottery. The sample was studied by electronic paramagnetic resonance (EPR). The spectra are characteristic of Fe 3+ in different environments
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22dc0064f63817da16299e1d5f6fe486
https://doi.org/10.1016/s0022-3697(98)00334-5
https://doi.org/10.1016/s0022-3697(98)00334-5
Publikováno v:
Comptes Rendus de l'Académie des Sciences - Series IIC - Chemistry. 2:119-125
Resume Deux defauts paramagnetiques, le centre peroxy et le centre E′, sont mis en evidence dans une argile brute en utilisant la resonance paramagnetique electronique. La raie intense, due aux oxydes de fer, observee dans le spectre RPE de l'argil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::594eae707439cbf73e5207765b8a6b70
https://doi.org/10.1016/s1387-1609(99)80011-5
https://doi.org/10.1016/s1387-1609(99)80011-5
Autor:
Fouzia Khattou, Guillaume Aptel, Deborah J. Jones, Jean-Victor Zanchetta, B. Deroide, Jacques Rozière
Publikováno v:
Journal of Materials Chemistry. 9:2453-2458
Copper has been used as an electron paramagnetic resonance (EPR) probe for the interlayer environment ofα-zirconium phosphate (α-ZrP) intercalated from hydrolysed/condensed 3-(2-aminoethylamino)propyl-trimethoxysilane solutions. These solids are pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fd5d3b199d507f4aa74796dd9f12d63
https://doi.org/10.1039/a904427b
https://doi.org/10.1039/a904427b
Publikováno v:
Journal of Non-Crystalline Solids. 231:49-57
Paramagnetic Mn2+ ions were incorporated in silica gel during the preparation of the sol. Doped silica xerogels were obtained by heat treatment at different temperatures and studied by 29Si and 129Xe nuclear magnetic resonance (NMR) experiments. Comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60918f1b9f45581978160010d108d231
https://doi.org/10.1016/s0022-3093(98)00377-9
https://doi.org/10.1016/s0022-3093(98)00377-9
Publikováno v:
Journal of Physics and Chemistry of Solids. 59:959-967
Sodium borosilicate glasses were prepared by the sol-gel method and doped with a paramagnetic manganese probe. X-band electron paramagnetic resonance (EPR) experiments, carried out on powdered samples, showed that even for molar ratios higher than 10
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9223f2275995f187a14c884842ce220
https://doi.org/10.1016/s0022-3697(98)00003-1
https://doi.org/10.1016/s0022-3697(98)00003-1