Search results for "Zirconi"
showing 10 items of 413 documents
CCDC 1440372: Experimental Crystal Structure Determination
2016
Related Article: Adrien T. Normand, Constantin G. Daniliuc, Gerald Kehr, Pierre Le Gendre, Gerhard Erker|2016|Dalton Trans.|45|3711|doi:10.1039/C6DT00416D
CCDC 1421128: Experimental Crystal Structure Determination
2015
Related Article: Adrien T. Normand, Constantin G. Daniliuc, Birgit Wibbeling, Gerald Kehr, Pierre Le Gendre, and Gerhard Erker|2015|J.Am.Chem.Soc.|137|10796|doi:10.1021/jacs.5b06551
CCDC 1421129: Experimental Crystal Structure Determination
2015
Related Article: Adrien T. Normand, Constantin G. Daniliuc, Birgit Wibbeling, Gerald Kehr, Pierre Le Gendre, and Gerhard Erker|2015|J.Am.Chem.Soc.|137|10796|doi:10.1021/jacs.5b06551
CCDC 192764: Experimental Crystal Structure Determination
2004
Related Article: N.Pirio, S.Bredeau, L.Dupuis, P.Schutz, B.Donnadieu, A.Igau, J.-P.Majoral, J.-C.Guillemin, P.Meunier|2004|Tetrahedron|60|1317|doi:10.1016/j.tet.2003.07.013
CCDC 736943: Experimental Crystal Structure Determination
2010
Related Article: T.D.Forster, H.M.Tuononen, M.Parvez, R.Roesler|2009|J.Am.Chem.Soc.|131|6689|doi:10.1021/ja901460y
CCDC 640948: Experimental Crystal Structure Determination
2008
Related Article: E.Ortega, N.Pirio, P.Richard, P.Meunier|2007|J.Organomet.Chem.|692|4669|doi:10.1016/j.jorganchem.2007.06.017
CCDC 710429: Experimental Crystal Structure Determination
2010
Related Article: V.Tabernero, T.Cuenca, M.E.G.Mosquera, C.R.de Arellano|2009|Polyhedron|28|2545|doi:10.1016/j.poly.2009.05.055
Native and modified alumina, titania and zirconia in normal and reversed-phase high-performance liquid chromatography
1996
Chromatographic properties of silica, alumina, titania and zirconia have been investigated in normal phase mode in the separation of test mixtures of basic, neutral and acidic compounds. In contrast to silica the chromatographic behaviour revealed the basic properties of the alumina, titania and zirconia surfaces. Therefore, separation of basic compounds on these packings seems very promising. Lypophilic packings have been synthesized by modification of titania, zirconia and alumina with organosilanes and polymers and tested for the separation of basic compounds and proteins. High hydrolytic stability of the modified packings was observed during separations with strong alkali and acidic elu…
Structural evolution of Pt/ceria-zirconia TWC catalysts during the oxidation of carbon monoxide
2004
The structural evolution of two Pt/ceria–zirconia catalysts, characterized by different amounts of supported Pt, was monitored by in situ X-ray diffraction during the anaerobic oxidation of CO at different temperatures. In a first phase, oxygen coming from the surface layers of the ceria–zirconia mixed oxide is consumed and no structural variation of the support is observed. After this induction time, bulk reduction of Pt/ceria–zirconia takes place as a step-like process, while the CO2 production continues at a nearly constant rate. This behavior is totally different from that of the metal-free support in similar reaction conditions, that show a gradual bulk reduction. In repeated oxidation…
Different kinds of solid solutions in the V2O5-ZrSiO4-NaF system by sol-gel processes and their characterization
1993
Abstract In the V2O5-ZrSiO4-NaF system, three kinds of substances have been identified by sol-gel methods depending on the V2O5 amounts in the composition. Their characterization by X-ray diffraction, measurements of unit cell parameters, UV-visible (UV-V) spectroscopy, differential thermal analysis and lab colour parameter determination allow the consideration of three kinds of solid solution in the zircon lattice: (a) V+5,V+4-ZrSiO4, thermally stable and with a deep green colour; (b) V+4-ZrSiO4, thermally stable and blue coloured, made by the sol-gel method and with V2O5 amounts lower than 0·03 mol per formula weight; and (c) Na+,F−,V+4-ZrSiO4, a solid solution with a deep blue-turquoise …